#!/bin/bash LOCKFILE=/var/lock/makewhatis.lock # the lockfile is not meant to be perfect, it's just in case the # two makewhatis cron scripts get run close to each other to keep # them from stepping on each other's toes. The worst that will # happen is that they will temporarily corrupt the database... [ -f $LOCKFILE ] && exit 0 trap "{ rm -f $LOCKFILE; exit 255; }" EXIT touch $LOCKFILE makewhatis -w exit 0