use git post receive hook send irc notification

git-post-receive-hook-irc-notification.sh

#!/bin/sh
#
# An example hook script for the "post-receive" event.
#
# The "post-receive" script is run after receive-pack has accepted a pack
# and the repository has been updated.  It is passed arguments in through
# stdin in the form
#  <oldrev> <newrev> <refname>
# For example:
#  aa453216d1b3e49e7f6f98441fa56946ddcd6a20 68f7abf4e6f922807889f52bc043ecd31b79f814 refs/heads/master
#
# see contrib/hooks/ for a sample, or uncomment the next line and
# rename the file to "post-receive".

#. /usr/share/doc/git-core/contrib/hooks/post-receive-email

shout_to_irc(){
  oldrev=$(git rev-parse $1)
  oldrevtime=$(git log -1 --format="%at" $oldrev)
  newrev=$(git rev-parse $2)
  currev=$(git rev-parse $2)
  currevtime=$(git log -1 --format="%at" $currev)

  refname="$3"
  branch="${refname##*/}"

  while [ $currevtime -gt $oldrevtime ]; do
    oneline=$(git log -1 --format="%an * %h : %s" $currev)
    echo -n "$4: $branch $oneline" | nc localhost 6667
    currev=$(git log -2 --format="%H" $currev | tail -n 1)
    currevtime=$(git log -1 --format="%at" $currev)
  done
}

while read oldrev newrev refname; do
  project=$(pwd)
  project=${project##*/}
  project=${project%.git}

  if expr "$oldrev" : '0*$' >/dev/null; then
    exit 0
    #x=$(($RANDOM % 54 + 1))
    #cow=$(ls /usr/share/cowsay/cows/ | sed -n "$x p")
    #cowsay -f /usr/share/cowsay/cows/$cow "Project $project created" | nc localhost 5678
  elif expr "$newrev" : '0*$' >/dev/null; then
    exit 0
  else
    shout_to_irc $oldrev $newrev $refname $project
  fi
done