fixes and refactor

[distro-setup] / brc

diff --git a/brc b/brc
index 138fd896b26df6b2ae9361ba75709abd9855fe93..5f43270c3c9e516864451eb357515db853756764 100644 (file)
--- a/brc
+++ b/brc
@@ -878,14 +878,21 @@ ediff() {
 
 # mail related
 etail() {
+  ngset
+  tail -F /var/log/exim4/mainlog /var/log/exim4/*main /var/log/exim4/paniclog /var/log/exim4/*panic -n 200 "$@"
+  ngreset
+}
+etailm() {
   tail -F /var/log/exim4/mainlog -n 200 "$@"
 }
 etail2() {
   tail -F /var/log/exim4/mymain -n 200 "$@"
 }
-
 ccomp tail etail etail2
 
+
+
+
 # print exim old pids
 eoldpids() {
   local configtime pid piduptime now daemonpid
@@ -1236,6 +1243,7 @@ ipp() {
 
 ifn() {
   # insensitive find
+  # -L = follow symlinks
   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
@@ -1418,9 +1426,33 @@ nmt() {
   esac
 }
 
+
+ngset() {
+  if shopt nullglob >/dev/null; then
+    ngreset=false
+  else
+    shopt -s nullglob
+    ngreset=true
+  fi
+}
+ngreset() {
+  if $ngreset; then
+    shopt -u nullglob
+  fi
+}
+
 nopanic() {
   # shellcheck disable=SC2024
-  sudo tee -a /var/log/exim4/paniclog-archive </var/log/exim4/paniclog; sudo truncate -s0 /var/log/exim4/paniclog
+  ngset
+  for f in /var/log/exim4/paniclog /var/log/exim4/*panic; do
+    base=${f##*/}
+    if [[ -s $f ]]; then
+      echo ================== $f =============
+      s tee -a /var/log/exim4/$base-archive <$f
+      s truncate -s0 $f
+    fi
+  done
+  ngreset
 }
 
 p8() { ping "$@" 8.8.8.8; }
@@ -2139,6 +2171,30 @@ nonet() {
 
 m() { printf "%s\n" "$*";  "$@"; }
 
+# update file. note: duplicated in mail-setup
+u() {
+  local tmp tmpdir dest="$1"
+  local base="${dest##*/}"
+  local dir="${dest%/*}"
+  if [[ $dir != "$base" ]]; then
+    # dest has a directory component
+    mkdir -p "$dir"
+  fi
+  ur=false # u result
+  tmpdir=$(mktemp -d)
+  cat >$tmpdir/"$base"
+  tmp=$(rsync -ic $tmpdir/"$base" "$dest")
+  if [[ $tmp ]]; then
+    printf "%s\n" "$tmp"
+    ur=true
+    if [[ $dest == /etc/systemd/system/* ]]; then
+      reload=true
+    fi
+  fi
+  rm -rf $tmpdir
+}
+
+
 uptime() {
   if type -p uprecords &>/dev/null; then
     uprecords -B
@@ -2183,6 +2239,85 @@ s/^\Wcapability: (.*)/\1/;Ta;h;b
 "|sort -r
 }
 
+# Run script by copying it to a temporary location first,
+# and changing directory, so we don't have any open
+# directories or files that could cause problems when
+# remounting.
+z() {
+  local tmp
+  tmp=$(type -p "$1")
+  if [[ $tmp ]]; then
+    cd $(mktemp -d)
+    cp -a "$tmp" .
+    shift
+    ./"${tmp##*/}" "$@"
+  else
+    "$@"
+  fi
+}
+
+
+# * spark
+# spark 1 5 22 13 53
+#   # => ▁▁▃▂▇
+
+# The MIT License
+# Copyright (c) Zach Holman, https://zachholman.com
+# https://github.com/holman/spark
+
+# As of 2022-10-28, I reviewed github forks that had several newer
+# commits, none had anything interesting. I did a little refactoring
+# mostly to fix emacs indent bug.
+
+# Generates sparklines.
+_spark_echo()
+{
+  if [ "X$1" = "X-n" ]; then
+    shift
+    printf "%s" "$*"
+  else
+    printf "%s\n" "$*"
+  fi
+}
+
+
+spark()
+{
+  local f tc
+  local n numbers=
+
+  # find min/max values
+  local min=0xffffffff max=0
+
+  for n in ${@//,/ }
+  do
+    # on Linux (or with bash4) we could use `printf %.0f $n` here to
+    # round the number but that doesn't work on OS X (bash3) nor does
+    # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
+    n=${n%.*}
+    (( n < min )) && min=$n
+    (( n > max )) && max=$n
+    numbers=$numbers${numbers:+ }$n
+  done
+
+  # print ticks
+  local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
+
+  # use a high tick if data is constant
+  (( min == max )) && ticks=(▅ ▆)
+
+  tc=${#ticks[@]}
+  f=$(( ( (max-min) <<8)/( tc - 1) ))
+  (( f < 1 )) && f=1
+
+  for n in $numbers
+  do
+    _spark_echo -n ${ticks[$(( ((($n-$min)<<8)/$f) ))]}
+  done
+  _spark_echo
+}
+
+
 # * misc stuff