iankelling.org Git - distro-setup/blob - .bashrc

   1 # to debug
   2 #set -x
   3 # redirect output to log file
   4 #exec 1>/a/tmp/bashlog
   5 #exec 2>/a/tmp/bashlog
   6
   7
   8 # By default this file is sourced for all ssh commands. This is wonky.
   9 # Normally, this file is not sourced when a script is run, and it would be much
  10 # better and more consistent if that also happened when when running a script
  11 # over ssh. so here we test for conditions of a script under ssh and return if
  12 # so. we can override with ssh -t which sets $SSH_TTY, which we can detect
  13 # But inside a script, ssh -t won't work, because we aren't using a tty at all.
  14 # So we need something else. Command lines and env variables sent across ssh are strictly limited.
  15 # We could override an obscure unused LC_var, like telephone, or we could transfer a file.
  16 # But I choose to set SendEnv and AcceptEnv ssh vars for BASH_LOGIN_SHELL.
  17 # In a private file, i have aliases for if $- == *i*, ssh -t, else ssh.
  18
  19 [[ $- != *i* && ! $SSH_CONNECTION ]] && export BASH_LOGIN_SHELL=true
  20
  21 if [[ $SSH_CONNECTION ]] \
  22    && [[ $- == *c* ]] \
  23    && [[ ! $SSH_TTY ]] \
  24    && [[ ! $BASH_LOGIN_SHELL == true ]] \
  25    && [[ $- != *i* ]]; then
  26     return
  27 fi
  28
  29 # Side note on ssh.
  30
  31
  32
  33 ###################
  34 ## include files ###
  35 ###################
  36
  37 for x in $HOME/bin/bash-programs-by-ian/repos/*/*-function; do
  38     source "$x"
  39 done
  40
  41 source $HOME/bin/semi-private # so I can share my bashrc
  42 source $HOME/path_add-function
  43
  44
  45
  46
  47 ############
  48 # settings #
  49 ############
  50
  51 CDPATH=.:/a
  52
  53 # remove gnome keyring warning messages
  54 # there is probably a more proper way, but I didn't find any easily on google
  55 unset GNOME_KEYRING_CONTROL
  56
  57 path_add /a/opt/adt-bundle*/tools /a/opt/adt-bundle*/platform-tools
  58
  59 #use extra globing features. See man bash, search extglob.
  60 shopt -s extglob
  61 #include .files when globbing.
  62 shopt -s dotglob
  63
  64 # disabled because it is broken with bash_completion package. It is a known bug they hope to fix.
  65 # When a glob expands to nothing, make it an empty string instead of the literal characters.
  66 # shopt -s nullglob
  67
  68 # make tab on an empty line do nothing
  69 shopt -s no_empty_cmd_completion
  70
  71
  72 # advanced completion
  73 # http://bash-completion.alioth.debian.org/
  74 # i was using the git version for a while for a bug fix.
  75 # it's made it into distros now
  76 # usually this is sourced by the system already,
  77 # but I check just incase
  78 if ! type _init_completion &> /dev/null && [[ -r "/usr/share/bash-completion/bash_completion" ]]; then
  79     . /usr/share/bash-completion/bash_completion
  80 fi
  81
  82 # fix spelling errors for cd, only in interactive shell
  83 shopt -s cdspell
  84 # append history instead of overwritting it
  85 shopt -s histappend
  86 # for compatibility, per gentoo/debian bashrc
  87 shopt -s checkwinsize
  88 # attempt to save multiline single commands as single history entries.
  89 shopt -s cmdhist
  90
  91
  92 # inside emacs fixes
  93 if [[ $INSIDE_EMACS ]]; then
  94     export INSIDE_EMACS
  95     export PAGER=cat
  96     export MANPAGER=cat
  97     # for readline-complete.el
  98     stty echo
  99 fi
 100
 101
 102 if [[ $- == *i* ]]; then
 103     # for readline-complete.el
 104     if [[ $INSIDE_EMACS ]]; then
 105         bind 'set horizontal-scroll-mode on'
 106         bind 'set print-completions-horizontally on'
 107     else
 108         # arrow keys. for other terminals, see http://unix.stackexchange.com/questions/10806/how-to-change-previous-next-word-shortcut-in-bash
 109         if [[ $TERM == "xterm" ]]; then
 110             bind '"\e[1;5C": shell-forward-word' 2>/dev/null
 111             bind '"\e[1;5D": shell-backward-word' 2>/dev/null
 112         else
 113             bind '"\eOc": shell-forward-word'
 114             bind '"\eOd": shell-backward-word'
 115         fi
 116         # terminal keys: C-c, C-z. the rest defined by stty -a are, at least in
 117         # gnome-terminal, overridden by bash, or disabled by the system
 118         stty werase undef lnext undef stop undef start undef
 119
 120     fi
 121
 122 fi
 123
 124
 125 # history number. History expansion is good.
 126 PS4='$LINENO+ '
 127 # history file size limit, set to unlimited.
 128 # this needs to be different from the default because
 129 # default HISTFILESIZE is 500 and could clobber our history
 130 HISTFILESIZE=
 131 # max commands 1 session can append/read from history
 132 HISTSIZE=100000
 133 # my own history size limit based on lines
 134 HISTFILELINES=1000000
 135 HISTFILE=$HOME/.bh
 136 # the time format display when doing the history command
 137 # also, setting this makes the history file record time
 138 # of each command as seconds from the epoch
 139 HISTTIMEFORMAT="%I:%M %p %m/%d "
 140 # consecutive duplicate lines don't go in history
 141 HISTCONTROL=ignoredups
 142 # just defensively unsetting this
 143 # this var can replace HISTCONTROL to do more flexible things like
 144 # not saving single char history items or specific names
 145 unset HISTIGNORE
 146
 147 export BC_LINE_LENGTH=0
 148
 149 path_add /a/opt/adt-bundle*/tools /a/opt/adt-bundle*/platform-tools
 150 path_add $HOME/bin/bash-programs-by-ian/utils
 151 # note, if I use a machine I don't want files readable by all users, set
 152 # umask 077  # If fewer than 4 digits are entered, leading zeros are assumed
 153
 154 C_DEFAULT_DIR=/a
 155
 156
 157
 158
 159 ###############
 160 ### aliases ###
 161 ###############
 162
 163 if [[ $- == *i* ]]; then
 164     alias cp='cp -i'
 165     alias mv='mv -i'
 166 fi
 167
 168 # remove any default aliases for these
 169 alias ls > /dev/null 2>&1 && unalias ls
 170 alias ll > /dev/null 2>&1 && unalias ll
 171 alias grep > /dev/null 2>&1 && unalias grep
 172
 173
 174 mkdir() {
 175     command mkdir -p "$@"
 176 }
 177
 178
 179 alias d='builtin bg'
 180 complete -A stopped -P '"%' -S '"' d
 181
 182 alias hi='history'
 183
 184
 185 # note: gksudo is recommended for X apps because it does not set the
 186 # home directory to the same.
 187
 188 if [[ $- == *i* ]]; then
 189     # extra space at the end allows aliases to work
 190     alias s='SUDOD="$PWD" sudo -i '
 191 else
 192     s() {
 193         if [[ $EUID != 0 || $1 == -* ]]; then
 194             local SUDOD="$PWD"
 195             sudo -i "$@"
 196         else
 197             "$@"
 198         fi
 199     }
 200 fi
 201
 202
 203
 204 if [[ $OS == Windows_NT ]]; then
 205     alias ffs='cygstart "/c/Program Files (x86)/Mozilla Firefox/firefox.exe" -P scratch'
 206     export DISPLAY=nt
 207     alias j='command cygpath'
 208     alias t='command cygstart'
 209     alias cygstart='echo be quick, use the alias "t" instead :\)'
 210     alias cygpath='echo be quick, use the alias "j" instead :\)'
 211
 212 fi
 213
 214
 215 #####################
 216 ###  functions   ####
 217 #####################
 218
 219
 220
 221 a() {
 222     beet "${@}"
 223 }
 224
 225
 226 t() {
 227     trash-put "$@"
 228 }
 229
 230
 231 if type ack-grep >/dev/null 2>&1; then
 232     alias ack=ack-grep
 233 fi
 234
 235
 236 gr() {
 237     grep -i --binary-files=without-match --color=auto "$@"
 238 }
 239
 240 grr() {
 241     grep -ri --binary-files=without-match --color=auto "$@"
 242 }
 243
 244
 245
 246
 247 calc() { echo "scale=3; $*" | bc -l; }
 248
 249
 250 # makes it so chown -R symlink affects the symlink and its target.
 251 chown() {
 252     if [[ $1 == -R ]]; then
 253         shift
 254         command chown -h "$@"
 255         command chown "$@"
 256         command chown -RH "$@"
 257     else
 258         command chown "$@"
 259     fi
 260 }
 261
 262
 263
 264 cgpl ()
 265 {
 266     if [[ $# == 0 ]]; then
 267         cp /a/bin/data/COPYING .
 268     else
 269         cp /a/bin/data/COPYING "$@"
 270     fi
 271 }
 272
 273
 274 dc() {
 275     diff --strip-trailing-cr -w "$@"   # diff content
 276 }
 277
 278
 279 distro_name() {
 280     if [[ -f /etc/fedora-release ]]; then
 281         echo fedora
 282     else
 283         grep "^ID=.*" /etc/os-release | sed 's/^ID=//'
 284     fi
 285 }
 286
 287
 288 dt() {
 289     date "+%A, %B %d, %r" "$@"
 290 }
 291
 292
 293 e() { echo "$@"; }
 294
 295
 296 envload() { # load environment from a previous: export > file
 297     local file=${1:-$HOME/.${USER}_env}
 298     eval "$(export | sed 's/^declare -x/export -n/')"
 299     while IFS= read -r line; do
 300         # declare -x makes variables local to a function
 301         eval ${line/#declare -x/export}
 302     done < "$file"
 303 }
 304
 305
 306
 307 # havn't tested these:
 308 #file cut copy and paste, like the text buffers :)
 309 _fbufferinit() { # internal use by
 310     ! [[ $my_f_tempdir ]] && my_f_tempdir=$(mktemp -d)
 311     rm -rf "$my_f_tempdir"/*
 312 }
 313 fcp() { # file cp
 314     _fbufferinit
 315     cp "$@" "$my_f_tempdir"/
 316 }
 317 fct() { # file cut
 318     _fbufferinit
 319     mv "$@" "$my_f_tempdir"/
 320 }
 321 fpst() { # file paste
 322     [[ $2 ]] && { echo too many arguments; return 1; }
 323     target=${1:-.}
 324     cp "$my_f_tempdir"/* "$target"
 325 }
 326
 327
 328 # find array. make an array of file names found by find into $x
 329 # argument: find arguments
 330 # return: find results in an array $x
 331 fa() {
 332     while read -rd ''; do
 333         x+=("$REPLY");
 334     done < <(find "$@" -print0);
 335 }
 336
 337
 338 git_empty_branch() { # start an empty git branch. carefull, it deletes untracked files.
 339     [[ $# == 1 ]] || { echo 'need a branch name!'; return 1;}
 340     local gitroot
 341     gitroot || return 1 # function to set gitroot
 342     builtin cd $gitroot
 343     git symbolic-ref HEAD refs/heads/$1
 344     rm .git/index
 345     git clean -fdx
 346 }
 347
 348 fw() {
 349     firefox -P default "$@" >/dev/null 2>&1
 350 }
 351
 352 fn() {
 353     firefox -P alt "$@" >/dev/null 2>&1
 354 }
 355
 356
 357
 358
 359
 360 # horizontal row. used to break up output
 361 hr() { printf "$(tput setaf 5)█$(tput sgr0)%.0s" $(seq $COLUMNS); }
 362
 363
 364 i() {
 365     git "$@"
 366 }
 367 # modified from ~/local/bin/git-completion.bash
 368 # other completion commands are mostly taken from bash_completion package
 369 complete -o bashdefault -o default -o nospace -F _git i 2>/dev/null \
 370     || complete -o default -o nospace -F _git i
 371
 372
 373 # insensitive find
 374 ifn () {
 375     find . -iname '*'"$*"'*'
 376 }
 377
 378
 379
 380 l() {
 381     if [[ $PWD == /[iap] ]]; then
 382         command ls -A --color=auto -I lost+found "$@"
 383     else
 384         command ls -A --color=auto "$@"
 385     fi
 386 }
 387
 388
 389 lld() { ll -d "$@"; }
 390
 391
 392 low() {  # make filenames all lowercase
 393     local x y
 394     for x in "$@"; do
 395         y=$(tr "[A-Z]" "[a-z]" <<<"$x")
 396         [[ $y != $x ]] && mv "$x" "$y"
 397     done
 398 }
 399
 400
 401 lower() { # make first letter of filenames lowercase.
 402     local x
 403     for x in "$@"; do
 404         if [[ ${x::1} == [A-Z] ]]; then
 405             y=$(tr "[A-Z]" "[a-z]" <<<"${x::1}")"${x:1}"
 406             safe_rename "$x" "$y"
 407         fi
 408     done
 409 }
 410
 411 safe_rename() {
 412     if [[ $# != 2 ]]; then
 413         echo safe_rename error: $# args, need 2 >2
 414         return 1
 415     elif [[ $1 != $2 ]]; then
 416         if [[ -e $2 ]]; then
 417             echo Cannot rename "$1" to "$2" as it already exists.
 418         else
 419             mv "$1" "$2"
 420         fi
 421     fi
 422 }
 423
 424 despace() {
 425     local x y
 426     for x in "$@"; do
 427         y="${x// /_}"
 428         safe_rename "$x" "$y"
 429     done
 430 }
 431
 432 # force symbolic link creation.
 433 # trash-put any existing files where links would be created.
 434 # mkdir -p the directory containing the link(s) if needed.
 435 # then do ln -s -- "$@"
 436 lnf() {
 437     if [[ $# -gt 2 && ! -d ${!#} ]]; then
 438         mkdir -p "${!#}"
 439     fi
 440     if [[ $# -gt 1 && -d ${!#} ]]; then
 441         local oldcwd=$PWD
 442         cd ${!#} # last arg
 443         for x in "${@:1:$(($#-1))}"; do # all but last arg
 444             # remove any trailing slashes
 445             x="${x%%+(/)}"
 446             # remove any leading directory components
 447             x="${x##*/}"
 448             te "$x" && trash-put "$x"
 449         done
 450         cd "$oldcwd"
 451     elif [[ $# -eq 2 ]]; then
 452         if te "$2"; then
 453             trash-put "$2"
 454         elif [[ ! -d $(getdir "$2") ]]; then
 455             mkdir -p $(getdir "$2")
 456         fi
 457     else
 458         te "${1##*/}" && rm "${1##*/}"
 459     fi
 460     ln -s -- "$@"
 461 }
 462
 463
 464
 465 # package manager
 466 # aliases would be much more compact, but they can't be used as ssh commands
 467 # also, to be used in a script, you need -i which prints annoying
 468 # warnings. instead, use -l in a script to source this file
 469 if type -p yum > /dev/null; then
 470     p() {
 471         if [[ $EUID == 0 ]]; then
 472             yum "$@"
 473         else
 474             sudo yum "$@"
 475         fi
 476     }
 477     pi() {
 478         if [[ $EUID == 0 ]]; then
 479             yum -y install "$@"
 480         else
 481             sudo yum -y install "$@"
 482         fi
 483     }
 484     pf() {
 485         if [[ $EUID == 0 ]]; then
 486             yum search "$@"
 487         else
 488             sudo yum search "$@"
 489         fi
 490     }
 491 else
 492     p() {
 493         if [[ $EUID == 0 ]]; then
 494             aptitude "$@"
 495         else
 496             sudo aptitude "$@"
 497         fi
 498     }
 499     pi() {
 500         if [[ $EUID == 0 ]]; then
 501             aptitude -y install "$@"
 502         else
 503             sudo aptitude -y install "$@"
 504         fi
 505     }
 506     pf() {
 507         # scratch a very annoying itch.
 508         # package description width as wide as the screen, and package name field small
 509         # aptitude manual can't figure out how wide emacs terminal is,
 510         # of course it doesn't consult the $COLUMNS variable...
 511         # and in a normal terminal, it makes the package name field ridiculously big
 512         # also, remove that useless dash before the description
 513         if [[ $EUID == 0 ]]; then
 514             aptitude -F "%c%a%M %p %$((COLUMNS - 30))d" -w $COLUMNS search "$@"
 515         else
 516             sudo aptitude -F "%c%a%M %p %$((COLUMNS - 30))d" -w $COLUMNS search "$@"
 517         fi
 518     }
 519 fi
 520
 521
 522 # test existence / exists
 523 te() {
 524     local ret=0
 525     for x in "$@"; do
 526         [[ -e "$x" || -L "$x" ]] || ret=1
 527     done
 528     return $ret
 529 }
 530
 531
 532 # fix root file ownership for FILE argument.
 533 # check if parent or grandparent is not root and if the dir of FILE is also
 534 # owned by that user, and change ownership to that user
 535 perm_fix() {
 536     local parent
 537     if [[ $EUID == 0 ]]; then
 538         te "$1" || touch $1
 539         if [[ $(stat -c "%u" "$1") == 0 ]] ; then
 540             argdir=$(getdir "$1")
 541             if [[ $(stat -c "%u" "$argdir") != 0 ]] ; then
 542                 if ! chown "--reference=$argdir" "$1"; then
 543                     echo failed to fix bad ownership file permissons
 544                     return 1
 545                 fi
 546             fi
 547         fi
 548     fi
 549 }
 550
 551 pfind() { #find *$1* in $PATH
 552     [[ $# != 1 ]] && { echo requires 1 argument; return 1; }
 553     local pathArray
 554     IFS=: pathArray=($PATH); unset IFS
 555     find "${pathArray[@]}" -iname "*$1*"
 556 }
 557
 558
 559 pwd() { # do pwd + some other info.
 560     echo "$(ll -d "$PWD")               $USER@$HOSTNAME         $(date +%r)"
 561 }
 562
 563
 564 pwgen() { # generate a random password, with digits & punctuation and without
 565     arg=${1:-50}
 566     head -c 200 /dev/urandom | tr -cd '[:graph:]' | head -c "$arg"
 567     echo
 568     head -c 200 /dev/urandom | tr -cd '[:alnum:]' | head -c "$arg"
 569     echo
 570 }
 571
 572 q() { # start / launch a program in the backround and redir output to null
 573     "$@" &> /dev/null &
 574 }
 575
 576
 577
 578 r() {
 579     exit "$@" 2>/dev/null
 580 }
 581
 582 # trash-restore lists everything that has been trashed at or below CWD
 583 # This picks out files just in CWD, not subdirectories,
 584 # which also match grep $1, usually use $1 for a time string
 585 # which you get from running restore-trash once first
 586 pick-trash() {
 587     local name x ask
 588     local nth=1
 589     # last condition is to not ask again for ones we skipped
 590     while name="$( echo | restore-trash | gr "$PWD/[^/]\+$" | gr "$1" )" \
 591           && [[ $name ]] && (( $(wc -l <<<"$name") >= nth )); do
 592         name="$(echo "$name" | head -n $nth | tail -n 1 )"
 593         read -p "$name [Y/n] " ask
 594         if [[ ! $ask || $ask == [Yy] ]]; then
 595             x=$( echo "$name"  | gr -o "^\s*[0-9]*" )
 596             echo $x | restore-trash > /dev/null
 597         elif [[ $ask == [Nn] ]]; then
 598             nth=$((nth+1))
 599         else
 600             return
 601         fi
 602     done
 603 }
 604
 605 # rsync, root is required to keep permissions right.
 606 # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
 607 #                                       --no-times --delete
 608 # basically, make an exact copy, use checksums instead of file times to be more accurate
 609 rl() { rsync -ahvic --delete "$@"; }
 610 # don't delete files on the target end which do not exist on the original end:
 611 rld() { rsync -ahvic "$@"; }
 612 complete -F _rsync -o nospace rld rlt fl
 613 # rl without preserving modification time. for some reason I had this as default before.
 614 # perhaps that reason will come up again and I will document it.
 615 rlt() { rsync -ahvic --delete --no-t "$@"; }
 616
 617
 618
 619 # use sb instead of s is for sudo redirections, eg. sb 'echo "ok fine" > /etc/file'
 620 sb() {
 621     local SUDOD="$PWD"
 622     sudo -i bash -c "$@"
 623 }
 624 complete -F _root_command s sb
 625
 626 # use -ll, less secure but faster.
 627 srm () {
 628     command srm -ll "$@"
 629 }
 630
 631 # sudo redo. be aware, this command may not work right on strange distros or earlier software
 632 sr() {
 633     if [[ $# == 0 ]]; then
 634         sudo -E bash -c -l "$(history -p '!!')"
 635     else
 636         echo this command redos last history item. no argument is accepted
 637     fi
 638 }
 639
 640
 641
 642 # log with script. timing is $1.t and script is $1.s
 643 # -l to save to ~/typescripts/
 644 # -t to add a timestamp to the filenames
 645 slog() {
 646     local logdir do_stamp arg_base
 647     (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
 648     logdir="/a/dt/"
 649     do_stamp=false
 650     while getopts "lt" option
 651     do
 652         case $option in
 653             l ) arg_base=$logdir ;;
 654             t ) do_stamp=true ;;
 655         esac
 656     done
 657     shift $(($OPTIND - 1))
 658     arg_base+=$1
 659     [[ -e $logdir ]] || mkdir -p $logdir
 660     $do_stamp && arg_base+=$(date +%F.%T%z)
 661     script -t $arg_base.s 2> $arg_base.t
 662 }
 663 splay() { # script replay
 664     #logRoot="$HOME/typescripts/"
 665     #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
 666     scriptreplay "$1.t" "$1.s"
 667 }
 668
 669
 670
 671 # timer in minutes
 672 tm() {
 673     (sleep $(calc "$@ * 60") && mpv /a/bin/data/alarm.mp3) > /dev/null 2>&1 &
 674 }
 675
 676
 677 ts() { # start editing a new file
 678     [[ $# != 1 ]] && echo "I need a filename." && return 1
 679     local quiet
 680     if [[ $- != *i* ]]; then
 681         quiet=true
 682     fi
 683     if [[ $1 == *.c ]]; then
 684         e '#include <stdio.h>' >"$1"
 685         e '#include <stdlib.h>' >>"$1"
 686         e 'int main(int argc, char * argv[]) {' >>"$1"
 687         e '     printf( "hello world\n");' >>"$1"
 688         e '     return 0;' >>"$1"
 689         e '}' >>"$1"
 690         e "${1%.c}: $1" > Makefile
 691         e "     g++ -ggdb -std=gnu99 -o ${1%.c} $<" >> Makefile
 692         e "#!/bin/bash" >run.sh
 693         e "./${1%.c}" >>run.sh
 694         chmod +x run.sh
 695     elif [[ $1 == *.java ]]; then
 696         e "public class ${1%.*} {" >"$1"
 697         e '     public static void main(String[] args) {' >>"$1"
 698         e '             System.out.println("Hello, world!");' >>"$1"
 699         e '     }' >>"$1"
 700         e '}' >>"$1"
 701
 702     else
 703         echo "#!/bin/bash" > "$1"
 704         chmod +x "$1"
 705     fi
 706     [[ $quiet ]] || g "$1"
 707
 708 }
 709
 710 tx() { # toggle set -x, and the prompt so it doesn't spam
 711     if [[ $- == *x* ]]; then
 712         set +x
 713         PROMPT_COMMAND=prompt_command
 714     else
 715         unset PROMPT_COMMAND
 716         PS1="\w \$ "
 717         set -x
 718     fi
 719 }
 720
 721
 722
 723
 724 if [[ $OS == Windows_NT ]]; then
 725     # cygstart wrapper
 726     cs() {
 727         cygstart "$@" &
 728     }
 729     xp() {
 730         explorer.exe .
 731     }
 732     # launch
 733     o() {
 734         local x=(*$1*)
 735         (( ${#x[#]} > 1 )) && { echo "warning ${#x[#]} matches found"; sleep 1; }
 736         cygstart *$1* &
 737     }
 738 else
 739     o() {
 740         if type gvfs-open &> /dev/null ; then
 741             gvfs-open "$@"
 742         else
 743             xdg-open "$@"
 744         fi
 745         # another alternative is run-mailcap
 746     }
 747 fi
 748
 749
 750 # todo, update this
 751 complete -F _longopt la lower low rlt rld rl lld ts ll dircp ex fcp fct fpst gr
 752
 753
 754
 755 hl() { # history limit. Write extra history to archive file.
 756     local max_lines linecount tempfile prune_lines
 757     local harchive="${HISTFILE}_archive"
 758     for x in "$HISTFILE" "$harchive"; do
 759         if [[ ! $x || ! -w $x || $(stat -c "%u" "$x") != $EUID  ]]; then
 760             echo "error in hl: history file $x no good"
 761             return 1
 762         fi
 763     done
 764     history -a # save history
 765     max_lines=$HISTFILELINES
 766     [[ $max_lines =~ ^[0-9]+$ ]] || { echo "error in hl: failed to get max line count"; return 1; }
 767     linecount=$(wc -l < $HISTFILE) # pipe so it doesn't output a filename
 768     [[ $linecount =~ ^[0-9]+$ ]] || { echo "error in hl: wc failed"; return 1; }
 769     if (($linecount > $max_lines)); then
 770         prune_lines=$(($linecount - $max_lines))
 771         head -n $prune_lines "$HISTFILE" >> "$harchive" \
 772             && sed -ie "1,${prune_lines}d"  $HISTFILE
 773     fi
 774 }
 775
 776 # commands to run when bash exits normally
 777 trap "hl; smh" EXIT
 778
 779
 780 # temporary variables to test colorization
 781 # some copied from gentoo /etc/bash/bashrc,
 782 use_color=false
 783 # dircolors --print-database uses its own built-in database
 784 # instead of using /etc/DIR_COLORS.  Try to use the external file
 785 # first to take advantage of user additions.
 786 safe_term=${TERM//[^[:alnum:]]/?}   # sanitize TERM
 787 match_lhs=""
 788 [[ -f ~/.dir_colors   ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
 789 [[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"
 790 [[ -z ${match_lhs}    ]] \
 791     && type -P dircolors >/dev/null \
 792     && match_lhs=$(dircolors --print-database)
 793 # test if our $TERM is in the TERM values in dircolor
 794 [[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true
 795
 796
 797 if ${use_color} && [[ $- == *i* ]]; then
 798
 799     if [[ $XTERM_VERSION == Cygwin* ]]; then
 800         get_term_color() {
 801             for x in "$@"; do
 802                 case $x in
 803                     underl) echo -n $'\E[4m' ;;
 804                     bold) echo -n $'\E[1m' ;;
 805                     red) echo -n $'\E[31m' ;;
 806                     green) echo -n $'\E[32m' ;;
 807                     blue) echo -n $'\E[34m' ;;
 808                     cyan) echo -n $'\E[36m' ;;
 809                     yellow) echo -n $'\E[33m' ;;
 810                     purple) echo -n $'\E[35m' ;;
 811                     nocolor) echo -n $'\E(B\E[m' ;;
 812                 esac
 813             done
 814         }
 815
 816     else
 817         get_term_color() {
 818             for x in "$@"; do
 819                 case $x in
 820                     underl) echo -n $(tput smul) ;;
 821                     bold) echo -n $(tput bold) ;;
 822                     red) echo -n $(tput setaf 1) ;;
 823                     green) echo -n $(tput setaf 2) ;;
 824                     blue) echo -n $(tput setaf 4) ;;
 825                     cyan) echo -n $(tput setaf 6) ;;
 826                     yellow) echo -n $(tput setaf 3) ;;
 827                     purple) echo -n $(tput setaf 5) ;;
 828                     nocolor) echo -n $(tput sgr0) ;; # no font attributes
 829                 esac
 830             done
 831         }
 832     fi
 833 else
 834     get_term_color() {
 835         :
 836     }
 837 fi
 838 # Try to keep environment pollution down, EPA loves us.
 839 unset safe_term match_lhs use_color
 840
 841
 842
 843
 844
 845
 846 ###############
 847 # prompt ######
 848 ###############
 849
 850
 851 if [[ $- == *i* ]]; then
 852     # git branch/status prompt function
 853     if [[ $OS != Windows_NT ]]; then
 854         GIT_PS1_SHOWDIRTYSTATE=true
 855     fi
 856     # arch source location
 857     [[ -r /usr/share/git/git-prompt.sh ]] && source /usr/share/git/git-prompt.sh
 858     # fedora/debian source
 859     [[ -r /usr/share/git-core/contrib/completion/git-prompt.sh ]] && source /usr/share/git-core/contrib/completion/git-prompt.sh
 860
 861     # in case we didn't source git-prompt.sh
 862     if ! declare -f __git_ps1 > /dev/null; then
 863         __git_ps1() {
 864             :
 865         }
 866     fi
 867
 868     # this needs to come before next ps1 stuff
 869     if [[ $BASH_VERSION == [456789]* ]]; then
 870         shopt -s autocd
 871         shopt -s globstar
 872         shopt -s dirspell
 873         PS1='\w'
 874         if [[ $- == *i* ]]  && [[ ! $INSIDE_EMACS ]]; then
 875             PROMPT_DIRTRIM=2
 876             bind -m vi-command B:shell-backward-word
 877             bind -m vi-command W:shell-forward-word
 878         fi
 879     else
 880         PS1='\W'
 881     fi
 882
 883     if [[ $SSH_CLIENT ]]; then
 884         PS1="\h $PS1"
 885     fi
 886
 887     prompt_command() {
 888         local return=$? # this MUST COME FIRST
 889         local psc pst
 890         local ps_char ps_color
 891         unset IFS
 892         history -a # save history
 893         history -n # read any new history
 894         if [[ ! DESKTOP_SESSION == xmonad && $TERM == *(screen*|xterm*|rxvt*) ]]; then
 895             # from the screen man page
 896             if [[ $TERM == screen* ]]; then
 897                 local title_escape="\033]..2;"
 898             else
 899                 local title_escape="\033]0;"
 900             fi
 901             echo -ne "$title_escape${PWD/#$HOME/~}  $USER@$HOSTNAME\007"
 902         fi
 903
 904         case $return in
 905             0) ps_color="$(get_term_color blue)"
 906                ps_char='\$'
 907                ;;
 908             1) ps_color="$(get_term_color green)"
 909                ps_char="$return \\$"
 910                ;;
 911             *) ps_color="$(get_term_color yellow)"
 912                ps_char="$return \\$"
 913                ;;
 914         esac
 915         if [[ ! -O . ]]; then # not owner
 916             if [[ -w . ]]; then # writable
 917                 ps_color="$(get_term_color bold red)"
 918             else
 919                 ps_color="$(get_term_color bold green)"
 920             fi
 921         fi
 922         PS1="${PS1%"${PS1#*[wW]}"}$(__git_ps1 ' (%s)') \[$ps_color\]$ps_char\[$(get_term_color nocolor)\] "
 923     }
 924     PROMPT_COMMAND=prompt_command
 925 fi
 926
 927
 928 ###########################################
 929 # stuff that makes sense to be at the end #
 930 ###########################################
 931 if [[ "$SUDOD" ]]; then
 932     cd "$SUDOD"
 933 elif [[ -d /a ]] && [[ $PWD == $HOME ]] && [[ $- == *i* ]]; then
 934     cd /a
 935 fi
 936
 937
 938 # best practice
 939 unset IFS
 940
 941
 942 # if someone exported $SOE, catch errors
 943 if [[ $SOE ]]; then
 944     errcatch
 945 fi