[distro-setup] / brc

#!/bin/bash
# this gets sourced. shebang is just for file mode detection

# note, to catch errors in functions but not outside, do:
# set -E -o pipefail
# trap return ERR
# trap 'trap ERR' RETURN


# * settings

CDPATH=.

set -o pipefail

# remove all aliases. aliases provided by the system tend to get in the way,
# for example, error happens if I try to define a function the same name as an alias
unalias -a

# remove gnome keyring warning messages
# there is probably a more proper way, but I didnt find any easily on google
# now using xfce+xmonad instead of vanilla xmonad, so disabling this
#unset GNOME_KEYRING_CONTROL

# use extra globing features.
shopt -s extglob
# include .files when globbing, but ignore files name . and ..
# setting this also sets dotglob.
# Note, this doesnt work in bash 4.4 anymore, for paths with
# more than 1 directory, like a/b/.foo, since * is fixed to not match /
export GLOBIGNORE=*/.:*/..

# broken with bash_completion package. Saw a bug for this once. dont anymore.
# still broken in wheezy
# still buggered in latest stable from the web, version 2.1
# perhaps its fixed in newer git version, which fails to make for me
# this note is from 6-2014.
# Also, enabling this before sourcing .bashrc makes PATH be empty.
#shopt -s nullglob

# make tab on an empty line do nothing
shopt -s no_empty_cmd_completion

# advanced completion
# http://bash-completion.alioth.debian.org/
# might be sourced by the system already, but ive noticed it not being sourced before
if ! type _init_completion &> /dev/null && [[ -r "/usr/share/bash-completion/bash_completion" ]]; then
  . /usr/share/bash-completion/bash_completion
fi


# fix spelling errors for cd, only in interactive shell
shopt -s cdspell
# append history instead of overwritting it
shopt -s histappend
# for compatibility, per gentoo/debian bashrc
shopt -s checkwinsize
# attempt to save multiline single commands as single history entries.
shopt -s cmdhist
# enable **
shopt -s globstar


# inside emcas fixes
if [[ $RLC_INSIDE_EMACS ]]; then
  # EMACS is used by bash on startup, but we dont need it anymore.
  # plus I hit a bug in a makefile which inherited it
  unset EMACS
  export RLC_INSIDE_EMACS
  export PAGER=cat
  export MANPAGER=cat
  # scp completion does not work, but this doesnt fix it. todo, figure this out
  complete -r scp &> /dev/null
  # todo, remote file completion fails, figure out how to turn it off
  export NODE_DISABLE_COLORS=1
  # This gets rid of ugly terminal escape chars in node repl
  # sometime, Id like to have completion working in emacs shell for node
  # the offending chars can be found in lib/readline.js,
  # things that do like:
  # stream.write('\x1b[' + (x + 1) + 'G');
  # We can remove them and keep readline, for example by doing this
  # to start a repl:
  #!/usr/bin/env nodejs
  # var readline = require('readline');
  # readline.cursorTo = function(a,b,c) {};
  # readline.clearScreenDown = function(a) {};
  # const repl = require('repl');
  # var replServer = repl.start('');
  #
  # no prompt, or else readline complete seems to be confused, based
  # on our column being different? node probably needs to send
  # different kind of escape sequence that is not ugly. Anyways,
  # completion doesnt work yet even with the ugly prompt, so whatever
  #
  export NODE_NO_READLINE=1

fi


if [[ $- == *i* ]]; then
  # for readline-complete.el
  if [[ $RLC_INSIDE_EMACS ]]; then
    # all for readline-complete.el
    stty echo
    bind 'set horizontal-scroll-mode on'
    bind 'set print-completions-horizontally on'
    bind '"\C-i": self-insert'
  else

    if [[ $KONSOLE_PROFILE_NAME ]]; then
      TERM=xterm-256color
      fi

    # todo: not sure this works in sakura
    #stty werase undef
    #bind "\C-w": kill-region
    # sakura == xterm-256color
    # konsole == xterm
    if [[ $TERM == xterm* ]]; then
      # control + arrow keys. for other terminals, see http://unix.stackexchange.com/questions/10806/how-to-change-previous-next-word-shortcut-in-bash
      bind '"\e[1;5C": shell-forward-word' 2>/dev/null
      bind '"\e[1;5D": shell-backward-word' 2>/dev/null
    else
      # make ctrl-backspace work. for konsole, i fixed it through
      # /home/iank/.local/share/konsole/default.keytab
      stty werase '^h'
      bind '"\eOc": shell-forward-word'
      bind '"\eOd": shell-backward-word'
    fi
    # i cant remember why i did this, probably to free up some keys to bind
    # to other things in bash.
    # other than C-c and C-z, the rest defined by stty -a are, at least in
    # gnome-terminal, overridden by bash, or disabled by the system
    stty  lnext undef stop undef start undef
  fi

fi


# history number. History expansion is good.
PS4='$LINENO+ '
# history file size limit, set to unlimited.
# this needs to be different from the default because
# default HISTFILESIZE is 500 and could clobber our history
HISTFILESIZE=
# max commands 1 session can append/read from history
HISTSIZE=100000
# my own history size limit based on lines
HISTFILELINES=1000000
HISTFILE=$HOME/.bh
# the time format display when doing the history command
# also, setting this makes the history file record time
# of each command as seconds from the epoch
HISTTIMEFORMAT="%Y-%m-%d %I:%M %p "
# consecutive duplicate lines dont go in history
HISTCONTROL=ignoredups
# works in addition to HISTCONTROL to do more flexible things
# it could also do the same things as HISTCONTROL and thus replace it,
# but meh. dunno why, but just " *" does glob expansion, so use [ ] to avoid it.
HISTIGNORE='pass *:[ ]*:lom*:gram*'

export BC_LINE_LENGTH=0

export PROFILE_TASKS_TASK_OUTPUT_LIMIT=100

# note, if I use a machine I dont want files readable by all users, set
# umask 077  # If fewer than 4 digits are entered, leading zeros are assumed

C_DEFAULT_DIR=/a

# i for insensitive. the rest from
# X means dont remove the current screenworth of output upon exit
# R means to show colors n things
export LESS=RXi
export SYSTEMD_LESS=$LESS

# * include files
for _x in /a/bin/distro-functions/src/* /a/bin/!(githtml)/*-function?(s); do
  source "$_x"
done
unset _x
# so I can share my bashrc
for x in /a/bin/bash_unpublished/source-!(.#*); do source $x; done
source $(dirname $(readlink -f $BASH_SOURCE))/path_add-function
source /a/bin/log-quiet/logq-function
# if someone exported $SOE (stop on error), catch errors.
#
# Note, on debian this results in the following warning when in ssh,
# hich I haven't figured out how to fix. It doesn't happen if we source
# after the shell has started
#
# bash: /usr/share/bashdb/bashdb-main.inc: No such file or directory
# bash: warning: cannot start debugger; debugging mode disabled
if [[ $SOE ]]; then
  if [[ -e /a/bin/errhandle/err ]]; then
    source /a/bin/errhandle/err
  fi
fi

path_add /a/exe
# add this with absolute paths as needed for better security
#path_add --end /path/to/node_modules/.bin

# pip3 --user things go here:
path_add --end ~/.local/bin
path_add --ifexists --end /a/work/libremanage
path_add --ifexists --end /a/opt/adt-bundle*/tools /a/opt/adt-bundle*/platform-tools
path_add --ifexists --end /a/opt/scancode-toolkit-3.0.2
export WCDHOME=/a
# based on readme.debian. dunno if this will break on other distros.
_x=/usr/share/wcd/wcd-include.sh
if [[ -e $_x ]]; then source $_x; fi


# * aliases

# very few aliases, functions are always preferred.

# ancient stuff.
if [[ $OS == Windows_NT ]]; then
  alias ffs='cygstart "/c/Program Files (x86)/Mozilla Firefox/firefox.exe" -P scratch'
  export DISPLAY=nt
  alias j='command cygpath'
  alias t='command cygstart'
  alias cygstart='echo be quick, use the alias "t" instead :\)'
  alias cygpath='echo be quick, use the alias "j" instead :\)'
fi



# keep this in mind? good for safety.
# alias cp='cp -i'
# alias mv='mv -i'


# remove any default aliases for these
unalias ls ll grep &>/dev/null ||:



# * functions


..() { c ..; }
...() { c ../..; }
....() { c ../../..; }
.....() { c ../../../..; }
......() { c ../../../../..; }


# file cut copy and paste, like the text buffers :)
# I havnt tested these.
_fbufferinit() { # internal use by
  ! [[ $my_f_tempdir ]] && my_f_tempdir=$(mktemp -d)
  rm -rf "$my_f_tempdir"/*
}
fcp() { # file cp
  _fbufferinit
  cp "$@" "$my_f_tempdir"/
}
fct() { # file cut
  _fbufferinit
  mv "$@" "$my_f_tempdir"/
}
fpst() { # file paste
  [[ $2 ]] && { echo too many arguments; return 1; }
  target=${1:-.}
  cp "$my_f_tempdir"/* "$target"
}


# todo, update this
complete -F _longopt la lower low rlt rld rl lld ts ll dircp ex fcp fct fpst gr


_cdiff-prep() {
  # join options which are continued to multiples lines onto one line
  local first=true
  grep -vE '^([ \t]*#|^[ \t]*$)' "$1" | while IFS= read -r line; do
    # remove leading spaces/tabs. assumes extglob
    if [[ $line == "[   ]*" ]]; then
      line="${line##+( )}"
    fi
    if $first; then
      pastline="$line"
      first=false
    elif [[ $line == *=* ]]; then
      echo "$pastline" >> "$2"
      pastline="$line"
    else
      pastline="$pastline $line"
    fi
  done
  echo "$pastline" >> "$2"
}

_khfix_common() {
  local host=${1##*@}
  local ip port
  read -r ip port < <(timeout 1 ssh -oBatchMode=yes -oControlMaster=no -oControlPath=/ -v $1 |& sed -rn "s/debug1: Connecting to $host \[([^\]*)] port ([0-9]+).*/\1 \2/p")
  if [[ ! $ip ]]; then
    echo "khfix: ssh failed"
    return 1
  fi
  if [[ $port != 22 ]]; then
    ip_entry="[$ip]:$port"
    host_entry="[$host]:$port"
  else
    ip_entry=$ip
    host_entry=$host
  fi
  ssh-keygen -R "$host_entry" -f $(readlink -f ~/.ssh/known_hosts)
  echo "khfix: removing key for $ip_entry"
  ssh-keygen -R "$ip_entry" -f $(readlink -f ~/.ssh/known_hosts)
}
khfix() { # known hosts fix
  _khfix_common "$@" || return 1
  ssh $1 :
}
khcopy() {
  _khfix_common "$@"
  ssh-copy-id $1
}

a() {
  local x=$(readlink -nf "${1:-$PWD}")
  # yes, its kinda dumb that xclip/xsel cant do this in one invocation
  echo -n "$x" | xclip -selection clipboard
  echo -n "$x" | xclip
}

ack() { ack-grep "$@"; }

anki() {
  if which anki &>/dev/null; then
    command anki
  else
    schroot -c anki -- anki
  fi
}

ap() {
  # pushd in case current directory has an ansible.cfg file
  pushd /a/xans >/dev/null
  ansible-playbook -v -l ${1:- $(hostname -f)} site.yml
  popd >/dev/null
}
aw() {
  pushd /a/work/ansible-configs >/dev/null
  time ansible-playbook -v -i inventory adhoc.yml "$@"
  popd >/dev/null
}
ad() {
  pushd /a/bin/distro-setup/a >/dev/null
  ansible-playbook site.yml
  popd >/dev/null
}

astudio() {
  # googling android emulator libGL error: failed to load driver: r600
  # lead to http://stackoverflow.com/a/36625175/14456
  export ANDROID_EMULATOR_USE_SYSTEM_LIBS=1
  /a/opt/android-studio/bin/studio.sh "$@" &r;
}

b() {
  # backwards
  c -
}

bbk() {
  c /
  local active=true
  if systemctl is-active btrbk.service; then
    echo "cron btrbk is already running"
    return 1
  fi
  systemctl is-active btrbk.timer || active=false
  if $active; then
    ser disable btrbk.timer
  fi
  # run latest
  install-my-scripts
  if ! btrbk-run "$@" && $active; then
    ser enable btrbk.timer
  fi
}

bfg() { java -jar /a/opt/bfg-1.12.14.jar "$@"; }

bigclock() {
  xclock -digital -update 1 -face 'arial black-80:bold'
}

bpull() {
  [[ $1 ]] || return 1
  c /
  # run latest
  install-my-scripts
  switch-mail-host $1 $HOSTNAME
}
bpush() {
  [[ $1 ]] || return 1
  c /
  # run latest
  install-my-scripts
  switch-mail-host $HOSTNAME $1
}


btc() {
  local f=/etc/bitcoin/bitcoin.conf
  # importprivkey will timeout if using the default of 15 mins.
  # upped it to 1 hour.
  bitcoin-cli -rpcclienttimeout=60000 -$(s grep rpcuser= $f) -$(s grep rpcpassword= $f) "$@"
}

btcusd() { # $1 btc in usd
  local price
  price="$(curl -s https://api.coinbase.com/v2/prices/BTC-USD/spot | jq -r .data.amount)"
  printf "$%s\n" "$price"
  if [[ $1 ]]; then
    printf "$%.2f\n" "$(echo "scale=4; $price * $1"| bc -l)"
  fi
}
usdbtc() { # $1 usd in btc
  local price
  price="$(curl -s https://api.coinbase.com/v2/prices/BTC-USD/spot | jq -r .data.amount)"
  printf "$%s\n" "$price"
  if [[ $1 ]]; then
    # 100 mil satoshi / btc. 8 digits after the 1.
    printf "%.8f btc\n" "$(echo "scale=10; $1 / $price "| bc -l)"
  fi
}
satoshi() { # $1 satoshi in usd
  local price
  price="$(curl -s https://api.coinbase.com/v2/prices/BTC-USD/spot | jq -r .data.amount)"
  price=$(echo "scale=10; $price * 0.00000001"| bc -l)
  printf "$%f\n" "$price"
  if [[ $1 ]]; then
    printf "$%.2f\n" "$(echo "scale=10; $price * $1"| bc -l)"
  fi
}


# c. better cd
if [[ $RLC_INSIDE_EMACS ]]; then
  c() { wcd -c -z 50 -o "$@"; }
else
  # lets see what the fancy terminal does from time to time
  c() { wcd -c -z 50 "$@"; }
fi

caa() { git commit --amend --no-edit -a; }

caf() {
  find -L $1 -type f -not \( -name .svn -prune -o -name .git -prune \
       -o -name .hg -prune -o -name .editor-backups -prune \
       -o -name .undo-tree-history -prune \) \
       -exec bash -lc 'hr; echo "$1"; hr; cat "$1"' _ {} \; 2>/dev/null

}

calc() { echo "scale=3; $*" | bc -l; }
# no having to type quotes, but also no command history:
clc() {
  local x
  read -r x
  echo "scale=3; $x" | bc -l
}

cam() {
  git commit -am "$*"
}

cbfstool () { /a/opt/coreboot/build/cbfstool "$@"; }

ccat () { # config cat. see a config without extra lines.
  grep '^\s*[^;[:space:]#]' "$@"
}

cdiff() {
  # diff config files,
  # setup for format of postfix, eg:
  # option = stuff[,]
  #    [more stuff]
  local pastline
  local unified="$(mktemp)"
  local f1="$(mktemp)"
  local f2="$(mktemp)"
  _cdiff-prep "$1" "$f1"
  _cdiff-prep "$2" "$f2"
  cat "$f1" "$f2" |  grep -Po '^[^=]+=' | sort | uniq > "$unified"
  while IFS= read -r line; do
    # the default bright red / blue doesnt work in emacs shell
    dwdiff -cblue,red -A best -d "      ," <(grep "^$line" "$f1" || echo ) <(grep "^$line" "$f2" || echo ) | colordiff
  done < "$unified"
}

cgpl()
{
  if (($#)); then
    cp /a/bin/data/COPYING "$@"
  else
    cp /a/bin/data/COPYING .
  fi
}

capache()
{
  if (($#)); then
    cp /a/bin/data/LICENSE "$@"
  else
    cp /a/bin/data/LICENSE .
  fi
}

cat-new-files() {
  local start=$SECONDS
  local dir="$1"
  inotifywait -m "$dir" -e create -e moved_to |
    while read filedir _ file; do
      cat "$filedir$file"
      hr
      calc $((SECONDS - start)) / 60
      sleep 5
    done

}

chown() {
  # makes it so chown -R symlink affects the symlink and its target.
  if [[ $1 == -R ]]; then
    shift
    command chown -h "$@"
    command chown -R "$@"
  else
    command chown "$@"
  fi
}

cim() {
  git commit -m "$*"
}

cl() {
  # choose recent directory. cl = cd list
  c =
}

chrome() {
  if type -p chromium &>/dev/null; then
    cmd=chromium
  else
    cd
    cmd="schroot -c stretch chromium"
    CHROMIUM_FLAGS='--enable-remote-extensions' $cmd &r
  fi
}

d() { builtin bg; }
complete -A stopped -P '"%' -S '"' d

dat() { # do all tee, for more complex scripts
  tee >(ssh frodo bash -l) >(bash -l) >(ssh x2 bash -l) >(ssh tp bash -l)
}
da() { # do all
  local host
  "$@"
  for host in x2 tp kd; do
    ssh $host "$@"
  done
}

dc() {
  diff --strip-trailing-cr -w "$@"   # diff content
}

debian_pick_mirror () {
  # netselect-apt finds a fast mirror.
  # but we need to replace the mirrors ourselves,
  # because it doesnt do that. best it can do is
  # output a basic sources file
  # here we get the server it found, get the main server we use
  # then substitute all instances of one for the other in the sources file
  # and backup original to /etc/apt/sources.list-original.
  # this is idempotent. the only way to identify debian sources is to
  # note the original server, so we put it in a comment so we can
  # identify it later.
  local file=$(mktemp -d)/f # safe way to get file name without creating one
  sudo netselect-apt -o "$file" || return 1
  url=$(grep ^\\w $file | head -n1 | awk '{print $2}')
  sudo cp -f /etc/apt/sources.list /etc/apt/sources.list-original
  sudo sed -ri "/http.us.debian.org/ s@( *[^ #]+ +)[^ ]+([^#]+).*@\1$url\2# http.us.debian.org@" /etc/apt/sources.list
  sudo apt-get update
}

despace() {
  local x y
  for x in "$@"; do
    y="${x// /_}"
    safe_rename "$x" "$y"
  done
}

dt() {
  date "+%A, %B %d, %r" "$@"
}

dus() { # du, sorted, default arg of
  du -sh ${@:-*} | sort -h
}



e() { echo "$@"; }


ediff() {
  [[ ${#@} == 2 ]] || { echo "error: ediff requires 2 arguments"; return 1; }
  emacs --eval "(ediff-files \"$1\" \"$2\")"
}


envload() { # load environment from a previous: export > file
  local file=${1:-$HOME/.${USER}_env}
  eval "$(export | sed 's/^declare -x/export -n/')"
  while IFS= read -r line; do
    # declare -x makes variables local to a function
    eval ${line/#declare -x/export}
  done < "$file"
}

# mail related
etail() {
  sudo tail -F /var/log/exim4/mainlog -n 50
}

f() {
  # cd forward
  c +
}

fa() {
  # find array. make an array of file names found by find into $x
  # argument: find arguments
  # return: find results in an array $x
  while read -rd ''; do
    x+=("$REPLY");
  done < <(find "$@" -print0);
}

faf() { # find all files
  find -L $1 -not \( -name .svn -prune -o -name .git -prune \
       -o -name .hg -prune -o -name .editor-backups -prune \
       -o -name .undo-tree-history -prune \)  -type f 2>/dev/null
}

# one that comes with distros is too old for newer devices
fastboot() {
  /a/opt/android-platform-tools/fastboot "$@";
}

kdecd() { /usr/lib/x86_64-linux-gnu/libexec/kdeconnectd; }

# List of apps to install/update
# Create from existing manually installed apps by doing
# fdroidcl update
# fdroidcl search -i, then manually removing
# automatically installed/preinstalled apps

#
# # my attempt at recovering from boot loop:
# # in that case, boot to recovery (volume up, home button, power, let go of power after samsun logo)
# # then
# mount /dev/block/mmcblk0p12 /data
# cd /data
# find -iname '*appname*'
# rm -rf FOUND_DIRS
# usually good enough to just rm -rf /data/app/APPNAME
#
# currently broken:
# # causes replicant to crash
# org.quantumbadger.redreader
# org.kde.kdeconnect_tp

# not broke, but wont work without gps
#com.zoffcc.applications.zanavi
# not broke, but not using atm
#com.nutomic.syncthingandroid
# # doesn\'t work on replicant
#net.sourceforge.opencamera
#
fdroid_pkgs=(
  de.marmaro.krt.ffupdater
  me.ccrama.redditslide
  org.fedorahosted.freeotp
  at.bitfire.davdroid
  com.alaskalinuxuser.justnotes
  com.artifex.mupdf.viewer.app
  com.danielkim.soundrecorder
  com.fsck.k9
  com.ghostsq.commander
  com.ichi2.anki
  com.jmstudios.redmoon
  com.jmstudios.chibe
  org.kde.kdeconnect_tp
  com.notecryptpro
  com.termux
  cz.martykan.forecastie
  de.danoeh.antennapod
  de.blinkt.openvpn
  de.marmaro.krt.ffupdater
  eu.siacs.conversations
  free.rm.skytube.oss
  im.vector.alpha # riot
  info.papdt.blackblub
  me.tripsit.tripmobile
  net.gaast.giggity
  net.minetest.minetest
  net.osmand.plus
  org.isoron.uhabits
  org.linphone
  org.gnu.icecat
  org.smssecure.smssecure
  org.yaaic
  sh.ftp.rocketninelabs.meditationassistant.opensource
)
# https://forum.xda-developers.com/android/software-hacking/wip-selinux-capable-superuser-t3216394
# for maru,
#me.phh.superuser

fdup() {
  local -A installed updated
  local p
  fdroidcl update
  if fdroidcl search -u | grep ^org.fdroid.fdroid; then
    fdroidcl upgrade org.fdroid.fdroid
    sleep 5
    fdroidcl update
  fi
  for p in $(fdroidcl search -i| grep -o "^\S\+"); do
    installed[$p]=true
  done
  for p in $(fdroidcl search -u| grep -o "^\S\+"); do
    updated[$p]=false
  done
  for p in ${fdroid_pkgs[@]}; do
    if ! ${installed[$p]:-false}; then
      fdroidcl install $p
      # sleeps are just me being paranoid since replicant has a history of crashing when certain apps are installed
      sleep 5
    fi
  done
  for p in ${!installed[@]}; do
    if ! ${updated[$p]:-true}; then
      fdroidcl upgrade $p
      sleep 5
    fi
  done
}

firefox-default-profile() {
  key=Default value=1 section=$1
  file=/p/c/subdir_files/.mozilla/firefox/profiles.ini
  sed -ri "/^ *$key/d" "$file"
  sed -ri "/ *\[$section\]/,/^ *\[[^]]+\]/{/^\s*$key[[:space:]=]/d};/ *\[$section\]/a $key=$value" "$file"
}
fdhome() { #firefox default home profile
  firefox-default-profile Profile0
}

fdwork() {
  firefox-default-profile Profile4
}

ff() {
  if type -P firefox &>/dev/null; then
    firefox "$@"
  else
    iceweasel "$@"
  fi
}



fn() {
  firefox -P alt "$@" >/dev/null 2>&1
}


fsdiff () {
  local missing=false
  local dname="${PWD##*/}"
  local m="/a/tmp/$dname-missing"
  local d="/a/tmp/$dname-diff"
  [[ -e $d ]] && rm "$d"
  [[ -e $m ]] && rm "$m"
  local msize=0
  local fsfile
  while read -r line; do
    fsfile="$1${line#.}"
    if [[ -e "$fsfile" ]]; then
      md5diff "$line" "$fsfile" && tee -a "/a/tmp/$dname-diff" <<< "$fsfile $line"
    else
      missing=true
      echo "$line" >> "$m"
      msize=$((msize + 1))
    fi
  done < <(find -type f )
  if $missing; then
    echo "$m"
    (( msize <= 100 )) && cat $m
  fi
}
fsdiff-test() {
  # expected output, with different tmp dirs
  # /tmp/tmp.HDPbwMqdC9/c/d ./c/d
  # /a/tmp/tmp.qLDkYxBYPM-missing
  # ./b
  cd $(mktemp -d)
  echo ok > a
  echo nok > b
  mkdir c
  echo ok > c/d
  local x=$(mktemp -d)
  mkdir $x/c
  echo different > $x/c/d
  echo ok > $x/a
  fsdiff $x
}
rename-test() {
  # test whether missing files were renamed, generally for use with fsdiff
  # $1 = fsdiff output file, $2 = directory to compare to. pwd = fsdiff dir
  # echos non-renamed files
  local x y found
  unset sums
  for x in "$2"/*; do
    { sums+=( "$(md5sum < "$x")" ) ; } 2>/dev/null
  done
  while read -r line; do
    { missing_sum=$(md5sum < "$line") ; } 2>/dev/null
    renamed=false
    for x in "${sums[@]}"; do
      if [[ $missing_sum == "$x" ]]; then
        renamed=true
        break
      fi
    done
    $renamed || echo "$line"
  done < "$1"
  return 0
}

feh() {
  # F = fullscren, z = random, Z = auto zoom
  command feh -FzZ "$@"
}

# mail related
frozen() {
  rm -rf /tmp/frozen
  s mailq |gr frozen|awk '{print $3}' | while read -r id; do
    s exim -Mvl $id
    echo
    s exim -Mvh $id
    echo
    s exim -Mvb $id
    echo -e '\n\n##############################\n'
  done | tee -a /tmp/frozen
}
frozenrm() {
  local ids=()
  while read -r line; do
    printf '%s\n' "$line"
    ids+=($(printf '%s\n' "$line" |gr frozen|awk '{print $3}'))
  done < <(s mailq)
  echo "sleeping for 2 in case you change your mind"
  sleep 2
  s exim -Mrm "${ids[@]}"
}

funce() {
  # like -e for functions. returns on error.
  # at the end of the function, disable with:
  # trap ERR
  trap 'echo "${BASH_COMMAND:+BASH_COMMAND=\"$BASH_COMMAND\" }
${FUNCNAME:+FUNCNAME=\"$FUNCNAME\" }${LINENO:+LINENO=\"$LINENO\"  }\$?=$?"
trap ERR
return' ERR
}


fw() {
  firefox -P default "$@" >/dev/null 2>&1
}

getdir () {
  local help="Usage: getdir [--help] PATH
Output the directory of PATH, or just PATH if it is a directory."
  if [[ $1 == --help ]]; then
    echo "$help"
    return 0
  fi
  if [[ $# -ne 1 ]]; then
    echo "getdir error: expected 1 argument, got $#"
    return 1
  fi
  if [[ -d $1 ]]; then
    echo "$1"
  else
    local dir="$(dirname "$1")"
    if [[ -d $dir ]]; then
      echo "$dir"
    else
      echo "getdir error: directory does not exist"
      return 1
    fi
  fi
}

git_empty_branch() { # start an empty git branch. carefull, it deletes untracked files.
  [[ $# == 1 ]] || { echo 'need a branch name!'; return 1;}
  local gitroot
  gitroot || return 1 # function to set gitroot
  builtin cd "$gitroot"
  git symbolic-ref HEAD refs/heads/$1
  rm .git/index
  git clean -fdx
}

gitroot() {
  local help="Usage: gitroot [--help]
Print the full path to the root of the current git repo

Handles being within a .git directory, unlike git rev-parse --show-toplevel,
and works in older versions of git which did not have that."
  if [[ $1 == --help ]]; then
    echo "$help"
    return
  fi
  local p=$(git rev-parse --git-dir) || { echo "error: not in a git repo" ; return 1; }
  [[ $p != /* ]] && p=$PWD
  echo "${p%%/.git}"
}

gitian() {
  git config user.email ian@iankelling.org
}

gh() {
  # i got an error, gh not found when doing a pull request, it seems like it wants itself in it\'s path.
  local _oldpath="$PATH"
  PATH="$PATH:~/node_modules/.bin"
  command gh "$@"
  PATH="$_oldpath"
}

gmacs() {
  # quit will prompt if the program crashes.
  gdb -ex=r -ex=quit --args emacs "$@"; r;
}

gdkill() {
  # kill the emacs daemon
  pk1 emacs --daemon
}

# at least in flidas, things rely on gpg being gpg1
gpg() {
  command gpg2 "$@"
}

gse() {
  local email=ian@iankelling.org
  if readlink ~/.mu | grep fsf &>/dev/null; then
    email=iank@fsf.org
  fi
  git send-email --notes "--envelope-sender=<$email>" \
      --suppress-cc=self "$@"
}

gr() {
  grep -iIP --color=auto "$@"
}

grr() { # grep recursive
  if [[ ${#@} == 1 ]]; then
    grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -RiIP --color=auto "$@" .
  else
    grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -RiIP --color=auto "$@"
  fi
}

hstatus() {
  # do git status on published repos
  cd /a/bin/githtml
  do_hr=false
  for x in *; do
    cd `readlink -f $x`/..
    status=$(i status -s) || pwd
    if [[ $status ]]; then
      hr
      echo $x
      printf "%s\n" "$status"
    fi
    cd /a/bin/githtml
  done
}

hl() { # history limit. Write extra history to archive file.
  # todo: this is not working or not used currently
  local max_lines linecount tempfile prune_lines x
  local harchive="${HISTFILE}_archive"
  for x in "$HISTFILE" "$harchive"; do
    [[ -e $x ]] || { touch "$x" && echo "notice from hl(): creating $x"; }
    if  [[ ! $x || ! -e $x || ! -w $x || $(stat -c "%u" "$x") != $EUID  ]];  then
      echo "error in hl: history file \$x:$x no good"
      return 1
    fi
  done
  history -a # save history
  max_lines=$HISTFILELINES
  [[ $max_lines =~ ^[0-9]+$ ]] || { echo "error in hl: failed to get max line count"; return 1; }
  linecount=$(wc -l < $HISTFILE) # pipe so it doesnt output a filename
  [[ $linecount =~ ^[0-9]+$ ]] || { echo "error in hl: wc failed"; return 1; }
  if (($linecount > $max_lines)); then
    prune_lines=$(($linecount - $max_lines))
    head -n $prune_lines "$HISTFILE" >> "$harchive" \
      && sed --follow-symlinks -ie "1,${prune_lines}d"  $HISTFILE
  fi
}

hr() { # horizontal row. used to break up output
  printf "$(tput setaf 5)█$(tput sgr0)%.0s" $(seq ${COLUMNS:-60})
  echo
}

hrcat() { local f; for f; do [[ -f $f ]] || continue; hr; echo "$f"; cat "$f"; done }

# get latest hub and run it
# main command to use:
# hub pull-request --no-edit
# --no-edit means to use the first commit\'s message as the pull request message.
# Also, you need to use a feature branch, not master in your fork.
# On first use, you input username/pass and it gets an oath token so you dont have to repeat
# it\'s at ~/.config/hub
hub() {
  local up uptar updir p
  p=/github/hub/releases/
  up=https://github.com/$(curl -s https://github.com$p| grep -o $p'download/[^/]*/hub-linux-amd64[^"]*' | head -n1)
  uptar=${up##*/}
  updir=${uptar%.tgz}
  if [[ ! -e /a/opt/$updir ]]; then
    rm -rf /a/opt/hub-linux-amd64*
    wget -P /a/opt $up
    tar -C /a/opt -zxf /a/opt/$uptar
    rm -f /a/opt/$uptar
    s /a/opt/$updir/install
  fi

  # save token across computers
  if [[ ! -L ~/.config/hub ]]; then
    if [[ -e ~/.config/hub  ]]; then
      mv ~/.config/hub /p/c/subdir_files/.config/
    fi
    if [[ -e /p/c/subdir_files/.config/hub ]]; then
      conflink
    fi
  fi
  command hub "$@"
}

i() { git "$@"; }
# modified from ~/local/bin/git-completion.bash
# other completion commands are mostly taken from bash_completion package
complete -o bashdefault -o default -o nospace -F _git i 2>/dev/null \
  || complete -o default -o nospace -F _git i

if ! type service &>/dev/null; then
  service() {
    echo actually running: systemctl $2 $1
    systemctl $2 $1
  }
fi

ic() {
  # fast commit all
  git commit -am "$*"
}


idea() {
  /a/opt/idea-IC-163.7743.44/bin/idea.sh "$@" &r
}

ifn() {
  # insensitive find
  find -L . -not \( -name .svn -prune -o -name .git -prune \
       -o -name .hg -prune -o -name .editor-backups -prune \
       -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
}


  o() {
    if type gvfs-open &> /dev/null ; then
      gvfs-open "$@"
    else
      xdg-open "$@"
    fi
    # another alternative is run-mailcap
  }

ipdrop() {
  s iptables -A INPUT -s $1 -j DROP
}


istext() {
  grep -Il "" "$@" &>/dev/null
}

jfilter() {
  grep -Evi -e "^(\S+\s+){4}(sudo|sshd|cron)\[\S*:" \
       -e "^(\S+\s+){4}systemd\[\S*: (starting|started) (btrfsmaintstop|dynamicipupdate|spamd dns bug fix cronjob|rss2email)\.*$"
}
jtail() {
  journalctl -n 10000 -f "$@" | jfilter
}
jr() { journalctl "$@" | jfilter | less ; }
jrf() { journalctl -f "$@" | jfilter; }

kff() { # keyboardio firmware flash
  pushd /a/bin/distro-setup/Arduino/Model01-Firmware
  yes $'\n' | make flash
  popd
}

l() {
  if [[ $PWD == /[iap] ]]; then
    command ls -A --color=auto -I lost+found "$@"
  else
    command ls -A --color=auto "$@"
  fi
}


lcn() { locate -i "*$**"; }

lg() { LC_COLLATE=C.UTF-8 ll --group-directories-first; }

lt() { ll -tr "$@"; }

lld() { ll -d "$@"; }

lom() {
  local l base
  if [[ $1 == /* ]]; then
    base=${1##*/}
    if mountpoint /mnt/$base; then
      return 0
    fi
    l=$(sudo losetup -f)
    sudo losetup $l $1
    if ! sudo cryptsetup luksOpen $l $base; then
      sudo losetup -d $l
      return 1
    fi
    sudo mkdir -p /mnt/$base
    sudo mount /dev/mapper/$base /mnt/$base
    sudo chown $USER:$USER /mnt/$base
  else
    base=$1
    sudo umount /mnt/$base
    l=$(sudo cryptsetup status /dev/mapper/$base|sed -rn 's/^\s*device:\s*(.*)/\1/p')
    sudo cryptsetup luksClose /dev/mapper/$base || return 1
    sudo losetup -d $l
  fi
}

low() {  # make filenames lowercase, remove bad chars
  local f new
  for f in "$@"; do
    new="${f,,}" # downcase
    new="${new//[^[:alnum:]._-]/_}" # sub bad chars
    new="${new#"${new%%[[:alnum:]]*}"}" # remove leading/trailing non-alnum
    new="${new%"${new##*[[:alnum:]]}"}"
    # remove bad underscores, like __ and _._
    new=$(echo $new | sed -r 's/__+/_/g;s/_+([.-])|([.-])_+/\1/g')
    safe_rename "$f" "$new" || return 1
  done
  return 0
}

lower() { # make first letter of filenames lowercase.
  local x
  for x in "$@"; do
    if [[ ${x::1} == [A-Z] ]]; then
      y=$(tr "[A-Z]" "[a-z]" <<<"${x::1}")"${x:1}"
      safe_rename "$x" "$y" || return 1
    fi
  done
}


k() { # history search
  grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | tail -n 80;
}

ks() { # history search
  grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | uniq;
}


make-targets() {
  # show make targets, via http://stackoverflow.com/questions/3063507/list-goals-targets-in-gnu-make
  make -qp | awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ {split($1,A,/ /);for(i in A)print A[i]}'
}

mbenable() {
  mb=$1
  dst=/m/4e/$1
  src=/m/md/$1
  set -x
  [[ -e $src ]] || { set +x; return 1; }
  mv -T $src $dst || { set +x; return 1; }
  ln -s -T $dst $src
  /a/exe/lnf /p/.mu ~
  mu index --maildir=/m/4e
  set +x
}
mbdisable() {
  mb=$1
  dst=/m/md/$1
  src=/m/4e/$1
  set -x
  [[ -e $src ]] || { set +x; return 1; }
  if [[ -L $dst ]]; then rm $dst; fi
  mv -T $src $dst
  set +x
}


mdt() {
  markdown "$1" >/tmp/mdtest.html
  firefox /tmp/mdtest.html
}


mkc() {
  mkdir "$1"
  c "$1"
}

mkct() {
  mkc `mktemp -d`
}

mkt() { # mkdir and touch file
  local path="$1"
  mkdir -p "$(dirname "$path")"
  touch "$path"
}

mkdir() { command mkdir -p "$@"; }

mo() { xset dpms force off; } # monitor off

net-dev-info() {
  e "lspci -nnk|gr -iA2 net"
  lspci -nnk|gr -iA2 net
  hr
  e "s lshw -C network"
  hr
  s lshw -C network

}

nopanic() {
  sudo tee -a /var/log/exim4/paniclog-archive </var/log/exim4/paniclog; sudo truncate -s0 /var/log/exim4/paniclog
}


otp() {
  oathtool --totp -b "$@" | xclip -selection clipboard
}

p8() { ping 8.8.8.8; }

pakaraoke() {
  # from http://askubuntu.com/questions/456021/remove-vocals-from-mp3-and-get-only-instrumentals
  pactl load-module module-ladspa-sink sink_name=Karaoke master=alsa_output.usb-Audioengine_Audioengine_D1-00.analog-stereo plugin=karaoke_1409 label=karaoke control=-30
}


pfind() { #find *$1* in $PATH
  [[ $# != 1 ]] && { echo requires 1 argument; return 1; }
  local pathArray
  IFS=: pathArray=($PATH); unset IFS
  find "${pathArray[@]}" -iname "*$1*"
}

pkx() { # package extract
  c `mktemp -d`
  pkg=$1
  cached=$(ls -t /var/cache/apt/archives/$pkg* | tail -n1)
  if [[ $cached ]]; then
    cp $cached .
  else
    aptitude download $pkg
  fi
  f=(*)
  ex $f
  rm -f $f
}

pk1() {
  local pid
  pid=($(pgrep -f "$*"))
  case ${#pid[@]} in
    1)
      ps -F $pid
      m kill $pid
      ;;
    0) echo "no pid found" ;;
    *)
      ps -F ${pid[@]}
      ;;
  esac
}

pick-trash() {
  # trash-restore lists everything that has been trashed at or below CWD
  # This picks out files just in CWD, not subdirectories,
  # which also match grep $1, usually use $1 for a time string
  # which you get from running restore-trash once first
  local name x ask
  local nth=1
  # last condition is to not ask again for ones we skipped
  while name="$( echo | restore-trash | gr "$PWD/[^/]\+$" | gr "$1" )" \
      && [[ $name ]] && (( $(wc -l <<<"$name") >= nth )); do
    name="$(echo "$name" | head -n $nth | tail -n 1 )"
    read -p "$name [Y/n] " ask
    if [[ ! $ask || $ask == [Yy] ]]; then
      x=$( echo "$name"  | gr -o "^\s*[0-9]*" )
      echo $x | restore-trash > /dev/null
    elif [[ $ask == [Nn] ]]; then
      nth=$((nth+1))
    else
      return
    fi
  done
}


pub() {
  rld /a/h/_site/ li:/var/www/iankelling.org/html
}

pubip() { curl -4s https://icanhazip.com; }
pubip6() { curl -6s https://icanhazip.com; }
whatismyip() { pubip; }

pumpa() {
  # fixes the menu bar in xmonad. this won\'t be needed when xmonad
  # packages catches up on some changes in future (this is written in
  # 4/2017)
  #
  # geekosaur: so youll want to upgrade to xmonad 0.13 or else use a
  # locally modified XMonad.Hooks.ManageDocks that doesnt set the
  # work area; turns out it\'s impossible to set correctly if you are
  # not a fully EWMH compliant desktop environment
  #
  # geekosaur: chrome shows one failure mode, qt/kde another, other
  # gtk apps a third, ... I came up with a setting that works for me
  # locally but apparently doesnt work for others, so we joined the
  # other tiling window managers in giving up on setting it at all
  #
  xprop -root -remove _NET_WORKAREA
  command pumpa &r
}


pwgen() {
  # -m = min length
  # -x = max length
  # -t = print pronunciation
  apg -m 14 -x 17 -t
  for (( i=0; i<10; i++ )); do
    shuf -n3 /usr/share/hunspell/en_US.dic | sed 's,/.*,,' | paste -sd . -

  done
}

pwlong() {
  # -M CLN = use Caps, Lowercase, Numbers
  # -n 1 = 1 password
  # -a 1 = use random instead of pronounceable algorithm
  apg -m 50 -x 70 -n 1 -a 1 -M CLN
}


q() { # start / launch a program in the backround and redir output to null
  "$@" &> /dev/null &
}

r() {
  exit "$@" 2>/dev/null
}

rbpipe() { rbt post -o --diff-filename=- "$@"; }
rbp() { rbt post -o "$@"; }

resolvcat() {
  local f
  f=/etc/resolv.conf
  echo $f:;  ccat $f
  hr; echo dnsmasq is $(systemctl is-active dnsmasq)
  f=/var/run/dnsmasq/resolv.conf
  hr; echo $f:;  ccat $f
  f=/etc/dnsmasq-servers.conf
  hr; echo $f:;  ccat $f
}

rl() {
  # rsync, root is required to keep permissions right.
  # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
    #                                   --no-times --delete
  # basically, make an exact copy, use checksums instead of file times to be more accurate
  rsync -ahvic --delete "$@"
}
rld() {
  # like rlu, but dont delete files on the target end which
  # do not exist on the original end.
  rsync -ahvic "$@"
}
complete -F _rsync -o nospace rld rl rlt

rlt() {
  # rl without preserving modification time.
  rsync -ahvic --delete --no-t "$@"
}

rlu() { # [OPTS] HOST PATH
  # eg. rlu -opts frodo /testpath
  # relative paths will expanded with readlink -f.
  # useful for selectively sending dirs which have been synced with unison,
  # where the path is the same on both hosts.
  opts=("${@:1:$#-2}") #  1 to last -2
  path="${@:$#}" # last
  host="${@:$#-1:1}" # last -1
  if [[ $path == .* ]]; then
    path=$(readlink -f $path)
  fi
  # rync here uses checksum instead of time so we dont mess with
  # unison relying on time as much. g is for group, same reason
  # to keep up with unison.
  s rsync -rlpchviog --relative "${opts[@]}" "$path" "root@$host:/";
}

# only run on MAIL_HOST. simpler to keep this on one system.
r2eadd() { # usage: name url
  # initial setup of rss2email:
  # r2e new r2e@iankelling.org
  # that initializes files, and sets default email.
  # symlink to the config doesnt work, so I copied it to /p/c
  # and then use cli option to specify explicit path.
  # Only option changed from default config is to set
  # force-from = True
  #
  # or else for a few feeds, the from address is set by the feed, and
  # if I fail delivery, then I send a bounce message to that from
  # address, which makes me be a spammer.

  r2e add $1 "$2" $1@r2e.iankelling.org
  # get up to date and dont send old entries now:
  r2e run --no-send $1
}
r2e() { command r2e -d /p/c/rss2email.json -c /p/c/rss2email.cfg "$@"; }

rspicy() { # usage: HOST DOMAIN
  # connect to spice vm remote host. use vspicy for local host
  local port=$(ssh $1<<EOF
sudo virsh dumpxml $2|grep "<graphics.*type='spice'" | \
       sed -rn "s/.*port='([0-9]+).*/\1/p"
EOF
        )
  if [[ $port ]]; then
    spicy -h $1 -p $port
  else
    echo "error: no port found. check that the domain is running."
  fi
}

rmstrips() {
  ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
}

s() {
  # background
  # I use a function because otherwise we cant use in a script,
  # cant assign to variable.
  #
  # note: gksudo is recommended for X apps because it does not set the
  # home directory to the same, and thus apps writing to ~ fuck things up
  # with root owned files.
  #
  if [[ $EUID != 0 || $1 == -* ]]; then
    SUDOD="$PWD" sudo -i "$@"
  else
    "$@"
  fi
}

safe_rename() { # warn and dont rename if file exists.
  # mv -n exists, but it\'s silent
  if [[ $# != 2 ]]; then
    echo safe_rename error: $# args, need 2 >2
    return 1
  fi
  if [[ $1 != $2 ]]; then # yes, we want to silently ignore this
    if [[ -e $2 || -L $2 ]]; then
      echo "Cannot rename $1 to $2 as it already exists."
    else
      mv -vi "$1" "$2"
    fi
  fi
}


sb() { # sudo bash -c
  # use sb instead of s is for sudo redirections,
  # eg. sb 'echo "ok fine" > /etc/file'
  local SUDOD="$PWD"
  sudo -i bash -c "$@"
}
complete -F _root_command s sb

scssl() {
  # s gem install scss-lint
  pushd /a/opt/thoughtbot-guides
  git pull --stat
  popd
  scss-lint -c /a/opt/thoughtbot-guides/style/sass/.scss-lint.yml "$@"
}

ser() {
  local s; [[ $EUID != 0 ]] && s=s
  if type -p systemctl &>/dev/null; then
    $s systemctl $1 $2
  else
    $s service $2 $1
  fi
}
# like restart, but do nothing if its not already started
srestart() {
  local service=$1
  if [[ $(s systemctl --no-pager show -p ActiveState $service ) == ActiveState=active ]]; then
    systemctl restart $service
  fi
}
stopnm() {
  ser stop NetworkManager
  ser stop dnsmasq
  s resolvconf -d NetworkManager
  ser start dnsmasq
  s ifup br0
}
startnm() {
  s ifdown br0
  ser start NetworkManager
  s nmtui-connect
}
rebr() {
  s ifdown br0
  s ifup br0
}

setini() { # set a value in a .ini style file
  key="$1" value="$2" section="$3" file="$4"
  if [[ -s $file ]]; then
    sed -ri -f - "$file" <<EOF
# remove existing keys
/ *\[$section\]/,/^ *\[[^]]+\]/{/^\s*$key[[:space:]=]/d}
# add key
/^\s*\[$section\]/a $key=$value
# from section to eof, do nothing
/^\s*\[$section\]/,\$b
# on the last line, if we haven't found section yet, add section and key
\$a [$section]\\
$key=$value
EOF
  else
    cat >"$file" <<EOF
[$section]
$key=$value
EOF
  fi
}

sgo() { # service go
  service=$1
  ser restart $service || return 1
  if type -p systemctl &>/dev/null; then
    ser enable $service
  fi
}


shellck() {
  # 2086 = unquoted $var
  # 2046 = unquoted $(cmd)
  # i had -x as an arg, but debian testing(stretch) doesn\'t support it
  shellcheck -e 2086,2046,2068,2006,2119 "$@"
}

skaraoke() {
  local tmp out
  in="$1"
  out=${2:-${1%.*}.sh}
  tmp=$(mktemp -d)
  script -t -c "mpv --no-config --no-resume-playback --no-terminal --no-audio-display '$1'" $tmp/typescript 2>$tmp/timing
  # todo, the current sleep seems pretty good, but it
  # would be nice to have an empirical measurement, or
  # some better wait to sync up.
  #
  # note: --loop-file=no prevents it from hanging if you have that
  # set to inf the mpv config.
  # --loop=no prevents it from exit code 3 due to stdin if you
  # had it set to inf in mpv config.
  #
  # args go to mpv, for example --volume=80, 50%
  cat >$out <<EOFOUTER
#!/bin/bash
trap "trap - TERM && kill 0" INT TERM ERR; set -e
( sleep .2; scriptreplay <( cat <<'EOF'
$(cat $tmp/timing)
EOF
) <( cat <<'EOF'
$(cat $tmp/typescript)
EOF
))&
base64 -d - <<'EOF'| mpv --loop=no --loop-file=no --no-terminal --no-audio-display "\$@" -
$(base64 "$1")
EOF
kill 0
EOFOUTER
  rm -r $tmp
  chmod +x $out
}

slog() {
  # log with script. timing is $1.t and script is $1.s
  # -l to save to ~/typescripts/
  # -t to add a timestamp to the filenames
  local logdir do_stamp arg_base
  (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
  logdir="/a/dt/"
  do_stamp=false
  while getopts "lt" option
  do
    case $option in
      l ) arg_base=$logdir ;;
      t ) do_stamp=true ;;
    esac
  done
  shift $(($OPTIND - 1))
  arg_base+=$1
  [[ -e $logdir ]] || mkdir -p $logdir
  $do_stamp && arg_base+=$(date +%F.%T%z)
  script -t $arg_base.s 2> $arg_base.t
}
splay() { # script replay
  #logRoot="$HOME/typescripts/"
  #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
  scriptreplay "$1.t" "$1.s"
}

smeld() { # ssh meld usage host1 host2 file
  meld <(ssh $1 cat $3) <(ssh $2 cat $3)
}

spd() {
  PATH=/usr/local/spdhackfix:$PATH command spd "$@"
}

spend() {
  s systemctl suspend
}

sr() {
  # sudo redo. be aware, this command may not work right on strange distros or earlier software
  if [[ $# == 0 ]]; then
    sudo -E bash -c -l "$(history -p '!!')"
  else
    echo this command redos last history item. no argument is accepted
  fi
}

srm () {
  # with -ll, less secure but faster.
  command srm -ll "$@"
}

srun() {
  scp $2 $1:/tmp
  ssh $1 /tmp/${2##*/} "${@:2}"
}

sss() { # ssh solo
  ssh -oControlMaster=no -oControlPath=/ "$@"
}
ssk() {
  local -a opts=()
  while [[ $1 == -* ]]; do
    opts+=("$1")
    shift
  done
  m pkill -f "^ssh: /tmp/ssh_mux_${USER}_${1#*@}_22_"
  m ssh "${opts[@]}" "$@"
}

swap() {
  local tmp
  tmp=$(mktemp)
  mv $1 $tmp
  mv $2 $1
  mv $tmp $2
}

t() {
  local x
  local -a args
  if type -t trash-put >/dev/null; then
    # skip args that dont exist, or else trash-put will have an error
    for x in "$@"; do
      if [[ -e $x || -L $x ]]; then
        args+=("$x")
      fi
    done
    [[ ! ${args[@]} ]] || trash-put "${args[@]}"
  else
    rm -rf "$@"
  fi
}


tclock() {
  clear
  date +%l:%_M
  len=60
  # this goes to full width
  #len=${1:-$((COLUMNS -7))}
  x=1
  while true; do
    if (( x == len )); then
      end=true
      d="$(date +%l:%_M)   "
    else
      end=false
      d=$(date +%l:%M:%_S)
    fi
    echo -en "\r"
    echo -n "$d"
    for ((i=0; i<x; i++)); do
      if (( i % 6 )); then
        echo -n _
      else
        echo -n .
      fi
    done
    if $end; then
      echo
      x=1
    else
      x=$((x+1))
    fi
    sleep 5
  done
}


te() {
  # test existence / exists
  local ret=0
  for x in "$@"; do
    [[ -e "$x" || -L "$x" ]] || ret=1
  done
  return $ret
}

# mail related
testmail() {
  declare -gi _seq; _seq+=1
  echo "test body" | m mail -s "test mail from $HOSTNAME, $_seq" "${@:-root@localhost}"
  # for testing to send from an external address, you can do for example
  # -fian@iank.bid -aFrom:ian@iank.bid web-6fnbs@mail-tester.com
  # note in exim, you can retry a deferred message
  # s exim -M MSG_ID
  # MSG_ID is in /var/log/exim4/mainlog, looks like 1ccdnD-0001nh-EN
}

# to test sieve, use below command. for fsf mail, see fsf-get-mail script.
# make modifications, then copy to live file, use -eW to actually modify mailbox
# cp /p/c/subdir_files/sieve/personal{test,}.sieve; testsievelist -eW INBOX
#
# Another option is to use sieve-test SCRIPT MAIL_FILE. note,
# sieve-test doesnt know about envelopes, Im not sure if sieve-filter does.

# sieve with output filter. arg is mailbox, like INBOX.
# This depends on dovecot conf, notably mail_location in /etc/dovecot/conf.d/10-mail.conf

testsievelist() {
  sieve-filter ~/sieve/maintest.sieve "$@" >/tmp/testsieve.log 2> >(tail) && sed -rn '/^Performed actions:/{n;n;p}' /tmp/testsieve.log | sort -u
}


# mail related
# plain sieve
testsieve() {
  sieve-filter ~/sieve/main.sieve "$@"
}

# mail related
testexim() {
  # testmail above calls sendmail, which is a link to exim/postfix.
  # its docs dont say a way of adding an argument
  # to sendmail to turn on debug output. We could make a wrapper, but
  # that is a pain. Exim debug args are documented here:
  # http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html
  #
  # http://www.exim.org/exim-html-current/doc/html/spec_html/ch-building_and_installing_exim.html
  # note, for exim daemon, you can turn on debug options by
  # adding -d, etc to COMMONOPTIONS in
  # /etc/default/exim4
  exim -d -t <<'EOF'
From: ian@iankelling.org
To: root@lists0p.fsf.org
Subject: Testing Exim

This is a test message.
EOF
}

# toggle keyboard
tk() {
  # based on
  # https://askubuntu.com/questions/160945/is-there-a-way-to-disable-a-laptops-internal-keyboard
  id=$(xinput --list  --id-only 'AT Translated Set 2 keyboard')
  if xinput list | grep -F '∼ AT Translated Set 2 keyboard' &>/dev/null; then
    echo enabling keyboard
    # find the first slave keyboard number, they are all the same in my output.
    # if they werent, worst case we would need to save the slave number somewhere
    # when it got disabled.
    slave=$(xinput list | sed -n 's/.*slave \+keyboard (\([0-9]*\)).*/\1/p' | head -n1)
    xinput reattach $id $slave
  else
    xinput float $id
  fi
}

tm() {
  # timer in minutes
  # --no-config
  (sleep $(calc "$@ * 60") && mpv --no-config --volume 50 /a/bin/data/alarm.mp3) > /dev/null 2>&1 &
}

trg() { transmission-remote-gtk&r; }
trc() {
  # example, set global upload limit to 100 kilobytes:
  # trc -u 100
  TR_AUTH=":$(jq -r .profiles[0].password ~/.config/transmission-remote-gtk/config.json)" transmission-remote transmission.lan -ne "$@"
}


tu() {
  local s;
  local dir="$(dirname "$1")"
  if [[ -e $1 && ! -w $1 || ! -w $(dirname "$1") ]]; then
    s=s;
  fi
  $s teeu "$@"
}

tx() { # toggle set -x, and the prompt so it doesnt spam
  if [[ $- == *x* ]]; then
    set +x
    PROMPT_COMMAND=prompt-command
    # disabled due to issue on stretch, running ll we get error. something
    # about the DEBUG trap is broken
    # if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
    #   trap 'settitle "$BASH_COMMAND"' DEBUG
    # fi
  else
    # normally, i would just execute these commands in the function.
    # however, DEBUG is not inherited, so we need to run it outside a function.
    # And we want to run set -x afterwards to avoid spam, so we cram everything
    # in here, and then it will run after this function is done.
    #PROMPT_COMMAND='trap DEBUG; unset PROMPT_COMMAND; PS1="\w \$ "; set -x'

    unset PROMPT_COMMAND
    PS1="\w \$ "
    set -x
  fi
}

psnetns() {
  # show all processes in the network namespace $1.
  # blank entries appear to be subprocesses/threads
  local x netns
  netns=$1
  ps -w | head -n 1
  s find -L /proc/[1-9]*/task/*/ns/net -samefile /run/netns/$netns | cut -d/ -f5 | \
    while read l; do
      x=$(ps -w --no-headers -p $l);
      if [[ $x ]]; then echo "$x"; else echo $l; fi;
    done
}

m() { printf "%s\n" "$*";  "$@"; }


vpncmd() {
  #m s nsenter -t $(pgrep -f "/usr/sbin/openvpn .* --config /etc/openvpn/.*pia.conf") -n -m "$@"
  m s nsenter -t $(pgrep -f "/usr/sbin/openvpn .* --config /etc/openvpn/.*client.conf") -n -m "$@"
}
vpnf() {
  vpncmd gksudo -u iank "firefox -no-remote -P vpn" &r
}
vpni() {
  vpncmd gksudo -u iank "$*"
}
vpnbash() {
  vpncmd bash
}



virshrm() {
  for x in "$@"; do virsh destroy "$x"; virsh undefine "$x"; done
}

vm-set-listen(){
  local t=$(mktemp)
  local vm=$1
  local ip=$2
  s virsh dumpxml $vm | sed -r "s/(<listen.*address=')([^']+)/\1$ip/" | \
    sed -r "s/listen='[^']+/listen='$ip/"> $t
  s virsh undefine $vm
  s virsh define $t
}


vmshare() {
  vm-set-listen $1 0.0.0.0
}


vmunshare() {
  vm-set-listen $1 127.0.0.1
}


vpn() {
  if [[ -e /lib/systemd/system/openvpn-client@.service ]]; then
    local vpn_service=openvpn-client
  else
    local vpn_service=openvpn
  fi

  [[ $1 ]] || { echo need arg; return 1; }
  journalctl --unit=$vpn_service@$1 -f -n0 &
  s systemctl start $vpn_service@$1
  # sometimes the ask-password agent does not work and needs a delay.
  sleep .5
  # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779240
  # noticed around 8-2017 after update from around stretch release
  # on debian testing, even though the bug is much older.
  s systemd-tty-ask-password-agent
}

vpnoff() {
  [[ $1 ]] || { echo need arg; return 1; }
  if [[ -e /lib/systemd/system/openvpn-client@.service ]]; then
    local vpn_service=openvpn-client
  else
    local vpn_service=openvpn
  fi
  s systemctl stop $vpn_service@$1
}


vrm() {
  virsh destroy $1
  virsh undefine $1
}



vspicy() { # usage: VIRSH_DOMAIN
  # connect to vms made with virt-install
  spicy -p $(sudo virsh dumpxml "$1"|grep "<graphics.*type='spice'"|\
               sed -r "s/.*port='([0-9]+).*/\1/")
}

wian() {
  cat-new-files /m/4e/INBOX/new
}

wtr() { curl wttr.in/boston; }

xevkb() { xev -event keyboard; }

# * misc stuff

# from curl cheat.sh/:bash_completion
_cheatsh_complete_curl()
{
  local cur prev opts
  _get_comp_words_by_ref -n : cur

  COMPREPLY=()
  #cur="${COMP_WORDS[COMP_CWORD]}"
  prev="${COMP_WORDS[COMP_CWORD-1]}"
  opts="$(curl -s cheat.sh/:list | sed s@^@cheat.sh/@)"

  if [[ ${cur} == cheat.sh/* ]] ; then
    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
    __ltrim_colon_completions "$cur"
    return 0
  fi
}
complete -F _cheatsh_complete_curl curl


if [[ $- == *i* ]]; then
  # commands to run when bash exits normally
  trap "hl" EXIT
fi


# temporary variables to test colorization
# some copied from gentoo /etc/bash/bashrc,
use_color=false
# dircolors --print-database uses its own built-in database
# instead of using /etc/DIR_COLORS.  Try to use the external file
# first to take advantage of user additions.
safe_term=${TERM//[^[:alnum:]]/?}   # sanitize TERM
match_lhs=""
[[ -f ~/.dir_colors   ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
[[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"
[[ -z ${match_lhs}    ]] \
  && type -P dircolors >/dev/null \
  && match_lhs=$(dircolors --print-database)
# test if our $TERM is in the TERM values in dircolor
[[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true


if ${use_color} && [[ $- == *i* ]]; then

  if [[ $XTERM_VERSION == Cygwin* ]]; then
    get_term_color() {
      for x in "$@"; do
        case $x in
          underl) echo -n $'\E[4m' ;;
          bold) echo -n $'\E[1m' ;;
          red) echo -n $'\E[31m' ;;
          green) echo -n $'\E[32m' ;;
          blue) echo -n $'\E[34m' ;;
          cyan) echo -n $'\E[36m' ;;
          yellow) echo -n $'\E[33m' ;;
          purple) echo -n $'\E[35m' ;;
          nocolor) echo -n $'\E(B\E[m' ;;
        esac
      done
    }

  else
    get_term_color() {
      for x in "$@"; do
        case $x in
          underl) echo -n $(tput smul) ;;
          bold) echo -n $(tput bold) ;;
          red) echo -n $(tput setaf 1) ;;
          green) echo -n $(tput setaf 2) ;;
          blue) echo -n $(tput setaf 4) ;;
          cyan) echo -n $(tput setaf 6) ;;
          yellow) echo -n $(tput setaf 3) ;;
          purple) echo -n $(tput setaf 5) ;;
          nocolor) echo -n $(tput sgr0) ;; # no font attributes
        esac
      done
    }
  fi
else
  get_term_color() {
    :
  }
fi
# Try to keep environment pollution down, EPA loves us.
unset safe_term match_lhs use_color



# * prompt


if [[ $- == *i* ]]; then
  # git branch/status prompt function
  if [[ $OS != Windows_NT ]]; then
    GIT_PS1_SHOWDIRTYSTATE=true
  fi
  # arch source lopip show -fcation
  [[ -r /usr/share/git/git-prompt.sh ]] && source /usr/share/git/git-prompt.sh
  # fedora/debian source
  [[ -r /usr/share/git-core/contrib/completion/git-prompt.sh ]] && source /usr/share/git-core/contrib/completion/git-prompt.sh

  # in case we didnt source git-prompt.sh
  if ! declare -f __git_ps1 > /dev/null; then
    __git_ps1() {
      :
    }
  fi

  # this needs to come before next ps1 stuff
  # this stuff needs bash 4, feb 2009,
  # old enough to no longer condition on $BASH_VERSION anymore
  shopt -s autocd
  shopt -s dirspell
  PS1='\w'
  if [[ $- == *i* ]]  && [[ ! $RLC_INSIDE_EMACS ]]; then
    PROMPT_DIRTRIM=2
    bind -m vi-command B:shell-backward-word
    bind -m vi-command W:shell-forward-word
  fi

  if [[ $SSH_CLIENT || $SUDO_USER ]]; then
    PS1="\h $PS1"
  fi

  prompt-command() {
    local return=$? # this MUST COME FIRST
    local psc pst ps_char ps_color stale_subvol
    unset IFS
    history -a # save history



    case $return in
      0) ps_color="$(get_term_color blue)"
         ps_char='\$'
         ;;
      1) ps_color="$(get_term_color green)"
         ps_char="$return \\$"
         ;;
      *) ps_color="$(get_term_color yellow)"
         ps_char="$return \\$"
         ;;
    esac
    if [[ ! -O . ]]; then # not owner
      if [[ -w . ]]; then # writable
        ps_color="$(get_term_color bold red)"
      else
        ps_color="$(get_term_color bold green)"
      fi
    fi
    # I would set nullglob, but bash has had bugs where that
    # doesnt work if not in top level.
    if [[ -e /nocow/btrfs-stale ]] && ((`command ls -AUq /nocow/btrfs-stale|wc -l`)); then
      ps_char="! $ps_char"
    fi
    if [[ ! $SSH_CLIENT && $MAIL_HOST != $HOSTNAME ]]; then
      ps_char="@ $ps_char"
    fi
    PS1="${PS1%"${PS1#*[wW]}"} \[$ps_color\]$ps_char\[$(get_term_color nocolor)\] "
    # emacs completion doesnt like the git prompt atm, so disabling it.
    #PS1="${PS1%"${PS1#*[wW]}"}$(__git_ps1 ' (%s)') \[$ps_color\]$ps_char\[$(get_term_color nocolor)\] "
  }
  PROMPT_COMMAND=prompt-command

  settitle () {
    if [[ $TERM == screen* ]]; then
      local title_escape="\033]..2;"
    else
      local title_escape="\033]0;"
    fi
    if [[ $* != prompt-command ]]; then
      echo -ne "$title_escape$USER@$HOSTNAME ${PWD/#$HOME/~} "
      printf "%s" "$*"
      echo -ne "\007"
    fi
  }

  # for titlebar.
  # condition from the screen man page i think.
  # note: duplicated in tx()
  # disabled. see note in tx
  # if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
  #   trap 'settitle "$BASH_COMMAND"' DEBUG
  # else
  #   trap DEBUG
  # fi

fi

reset-konsole() {
  # we also have a file in /a/c/...konsole...
  local f=$HOME/.config/konsolerc
  setini DefaultProfile profileian.profile "Desktop Entry" $f
  setini Favorites profileian.profile "Favorite Profiles" $f
  setini ShowMenuBarByDefault false KonsoleWindow $f
  setini TabBarPosition Top TabBar $f
}

reset-sakura() {
  while read k v; do
    setini $k $v sakura /a/c/subdir_files/.config/sakura/sakura.conf
  done <<'EOF'
colorset1_back rgb(33,37,39
less_questions true
audible_bell No
visible_bell No
disable_numbered_tabswitch true
scroll_lines 10000000
scrollbar true
EOF
}

reset-xscreensaver() {
  # except for spash, i set these by setting gui options in
  # xscreensaver-command -demo
  # then finding the corresponding option in .xscreensaver
  # spash, i happened to notice in .xscreensaver
  #
  # dpmsOff, monitor doesnt come back on using old free software supported nvidia card
  cat > /home/iank/.xscreensaver <<'EOF'
mode:           blank
dpmsEnabled:    True
dpmsStandby:    0:02:00
dpmsSuspend:    0:03:00
dpmsOff:        0:00:00
timeout:        0:02:00
lock:           True
lockTimeout:    0:03:00
splash:         False
EOF

}


# * stuff that makes sense to be at the end
if [[ "$SUDOD" ]]; then
  cd "$SUDOD"
  unset SUDOD
elif [[ -d /a ]] && [[ $PWD == $HOME ]] && [[ $- == *i* ]]; then
  cd /a
fi


# best practice
unset IFS


# for mitmproxy to get a newer python.
# commented until i want to use it because it
# noticably slows bash startup
#

mypyenvinit () {
  if [[ $EUID == 0 || ! -e ~/.pyenv/bin ]]; then
    echo "error: dont be root. make sure pyenv is installed"
    return 1
  fi
  export PATH="~/.pyenv/bin:$PATH"
  eval "$(pyenv init -)"
  eval "$(pyenv virtualenv-init -)"
}


export GOPATH=$HOME/go
path_add $GOPATH/bin
path_add /usr/local/go/bin

# I have the git repo and a release. either one should work.
# I have both because I was trying to solve an issue that
# turned out to be unrelated.
# ARDUINO_PATH=/a/opt/Arduino/build/linux/work
export ARDUINO_PATH=/a/opt/arduino-1.8.9

path_add --end ~/.npm-global

# taken from default changes to bashrc and bash_profile
path_add --end $HOME/.rvm/bin
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*

export BASEFILE_DIR=/a/bin/fai-basefiles

export ANDROID_HOME=/opt/android

# didnt get drush working, if I did, this seems like the
# only good thing to include for it.
# Include Drush completion.
# if [ -f "/home/ian/.drush/drush.complete.sh" ] ; then
#     source /home/ian/.drush/drush.complete.sh
# fi


# https://wiki.archlinux.org/index.php/Xinitrc#Autostart_X_at_login
# i added an extra condition as gentoo xorg guide says depending on
# $DISPLAY is fragile.
if [[ ! $DISPLAY && $XDG_VTNR == 1 ]] && shopt -q login_shell && isarch; then
  exec startx
fi


# ensure no bad programs appending to this file will have an affect
return 0