usr.bin/chat/unlock

#!/bin/sh

LOCKDIR=/var/spool/lock

case "$1" in
    "")         echo "Usage: unlock lockfile"; exit 1 ;;
    .*)         echo "Usage: unlock lockfile"; exit 1 ;;
esac

if [ -f $LOCKDIR/$1 ]
then
        if [ `wc -c < $LOCKDIR/$1` -eq 4 ]
        then
            rm -f $LOCKDIR/$1
            exit 0
        else
            echo "Usage: unlock lockfile"
            exit 1
        fi
else
        echo "lockfile" $LOCKDIR/$1 "does not exist"
        exit 1
fi