mailer

著名的解Unix密码的源程序

#!/bin/sh
#
# This file is part of John the Ripper password cracker,
# Copyright (c) 1996-98 by Solar Designer
#

if [ $# -ne 1 ]; then
	echo "Usage: $0 PASSWORD-FILE"
	exit 0
fi

# There's no need to mail users with these shells
SHELLS=-,/bin/false,/dev/null,/bin/sync

# Look for John in the same directory with this script
DIR=`echo $0 | sed "s,/[^/]*$,,"`

# Let's start
$DIR/john -show $1 -shells:$SHELLS | sed -n "s/:.*//p" |
(
	SENT=0

	while read LOGIN; do
		echo Sending mail to "$LOGIN"...

# You'll probably want to edit the message below
		mail -s "Bad password" "$LOGIN" << EOF
Hello!

Your password for account "$LOGIN" is insecure. Please change it as soon
as possible.

Yours,
	Password Checking Robot.
EOF

		SENT=$(($SENT+1))
	done

	echo $SENT messages sent
)