Bulk Change Password

change_password.sh

#!/bin/bash

# requires "empty": http://empty.sourceforge.net/
# ubuntu users also should check http://ubuntuforums.org/showthread.php?t=2131632

function helpshow() {
echo "
Usage:

$0 192.168.1.5 192.168.1.6

"

exit 1

}

if [ $# == 0 ] ; then
	helpshow
fi

echo -n "username: "
read login
echo -n "current password: "
read -s password
echo ""
echo -n "new password: "
read -s newpass

# -----------------------------------------------------------------------------

for target in $@; do
	cmd="ssh $login@$target passwd"
	tmp="/tmp/empty.tmp"
	empty -f -L $tmp $cmd
	if [ $? = 0 ]; then
		empty -v -w assword: "$password\n"
		empty -v -w assword: "$password\n"
                #don't cry, we need to roll 4 times in case of pam_passwdqc
		for i in 1 2 3 4; do
	            empty -v -w assword: "$newpass\n"
		done
		empty -s "exit"
		sleep 1
                #want verbosity? uncomment next line
		#cat $tmp
		rm -f $tmp
	else
		echo "Error: Can't start empty in daemon mode"
		return 1
	fi

	echo "$target DONE"
done