Nice script that cleans up stale deployment jars after 30 days, but _always_ preserves the last 5 so you can go back to any one of them if need be. Great for jruby and clojure projects where it's all in a single jar.

vacuum.sh

#!/bin/bash

#
# This script clears out all the "stale" jars that we no longer need.
# They have to be AT LEAST 30 days old, and we MUST keep the last 5.
# Other than that, they can go.
#

#
# Set upt he environment for this - as we do in all scripts
#
export PATH="/usr/local/bin:/usr/local/sbin:/usr/sbin:/sbin:$HOME/bin:$PATH"
export LANG="en_US.UTF-8"

#
# Jump right in... find out where this is meant to run, and get there
#
program=`basename $0`
cd
echo "Running $program from `pwd` on `hostname -f`..."

# find all the jar files with a creation date more than 30 days ago
oldJars=`find . -type f -name "*.jar" -ctime +30`
if [ "$oldJars" != "" ]; then
  recentJars=`ls -rt ./*.jar | tail -6 | head -5`
  for i in ${oldJars}; do
    if [ "`echo ${recentJars} | grep $i`" = "" ]; then
      echo "Removing $i"
      rm $i
    fi
  done
fi
echo "vacuum of old deployments - complete"
exit 0