aydemir
88 lines
2.1 KiB
Groff
88 lines
2.1 KiB
Groff
#!/bin/bash
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#
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# Mostly copied from SuSE and Gentoo
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#
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# this script looks into /etc/cron.[hourly|daily|weekly|monthly]
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# for scripts to be executed. The info about last run is stored in
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# /var/spool/cron/lastrun
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LOCKDIR=/var/spool/cron/lastrun
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LOCKFILE=${LOCKDIR}/lock
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mkdir -p ${LOCKDIR}
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# Make sure we're not running multiple instances at once.
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# Try twice to lock, otherwise give up.
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for ((i = 0; i < 2; i = i + 1)); do
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ln -sn $$ ${LOCKFILE} 2>/dev/null && break
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# lock failed, check for a running process.
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# handle both old- and new-style locking.
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cronpid=$(readlink ${LOCKFILE} 2>/dev/null) ||
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cronpid=$(cat ${LOCKFILE} 2>/dev/null) ||
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continue # lockfile disappeared? try again
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# better than kill -0 because we can verify that it's really
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# another run-crons process
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if [[ $(</proc/${cronpid}/cmdline) == $(</proc/$$/cmdline) ]] 2>/dev/null; then
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# whoa, another process is really running
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exit 0
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else
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rm -f ${LOCKFILE}
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fi
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done
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# Check to make sure locking was successful
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if [[ ! -L ${LOCKFILE} ]]; then
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echo "Can't create or read existing ${LOCKFILE}, giving up"
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exit 1
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fi
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# Set a trap to remove the lockfile when we're finished
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trap "rm -f ${LOCKFILE}" 0 1 2 3 15
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for BASE in hourly daily weekly monthly
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do
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CRONDIR=/etc/cron.${BASE}
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test -d $CRONDIR || continue
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if [ -e ${LOCKDIR}/cron.$BASE ]
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then
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case $BASE in
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hourly)
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#>= 1 hour, 5 min -=> +65 min
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TIME="-cmin +65" ;;
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daily)
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#>= 1 day, 5 min -=> +1445 min
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TIME="-cmin +1445" ;;
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weekly)
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#>= 1 week, 5 min -=> +10085 min
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TIME="-cmin +10085" ;;
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monthly)
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#>= 31 days, 5 min -=> +44645 min
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TIME="-cmin +44645" ;;
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esac
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find ${LOCKDIR} -name cron.$BASE $TIME -exec rm {} \;
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fi
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# if there is no touch file, make one then run the scripts
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if [ ! -e ${LOCKDIR}/cron.$BASE ]
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then
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touch ${LOCKDIR}/cron.$BASE
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set +e
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for SCRIPT in $CRONDIR/*
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do
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if [[ -x $SCRIPT && ! -d $SCRIPT ]]; then
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$SCRIPT
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fi
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done
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fi
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done
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# Clean out bogus cron.$BASE files with future times
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touch ${LOCKDIR}
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find ${LOCKDIR} -newer ${LOCKDIR} -exec /bin/rm -f {} \;
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