1#!/bin/sh 2 3LOCKDIR=/var/spool/lock 4 5case "$1" in 6 "") echo "Usage: unlock lockfile"; exit 1 ;; 7 .*) echo "Usage: unlock lockfile"; exit 1 ;; 8esac 9 10if [ -f $LOCKDIR/$1 ] 11then 12 if [ `wc -c < $LOCKDIR/$1` -eq 4 ] 13 then 14 rm -f $LOCKDIR/$1 15 exit 0 16 else 17 echo "Usage: unlock lockfile" 18 exit 1 19 fi 20else 21 echo "lockfile" $LOCKDIR/$1 "does not exist" 22 exit 1 23fi 24