Best Bash Script EVER - "Just In Case"

clayg@m-net:~$ cat bin/jic
#!/bin/bash
if [ $# -eq 0 ]
then
echo "usage: jic [filename]"
exit 1
fi
if ! [ -e $1 ]
then
echo "$1 does not exist!"
exit 1
fi
ext=$(date +%y%m%d.%H%M%S)
jic=$1.$ext
cp $1 $jic
chmod -x $jic
echo "SAVED: $jic"

Credit goes to a sourpuss I used to work with by the name of Chuck Carson, who gave me the idea. Where ever you are big guy - thanks.

The script creates a backup copy of a file you are about to modify:
# jic /etc/sysconfig/iptables
would create a copy called /etc/sysconfig/iptables.YYMMDD.HHMMSS

you know... just in case

Also handy for versioning revisions to scripts you're working on - never now when you're latest hack will turn out to be a total bust.

Also - go get yourself a free shell account on http://www.arbornet.org/