文件操作 - man-db.cron
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文件: /root/sh/etc/cron.daily/man-db.cron
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#!/bin/bash if [ -e /etc/sysconfig/man-db ]; then . /etc/sysconfig/man-db fi if [ "$CRON" = "no" ]; then exit 0 fi renice +19 -p $$ >/dev/null 2>&1 ionice -c3 -p $$ >/dev/null 2>&1 LOCKFILE=/var/lock/man-db.lock # the lockfile is not meant to be perfect, it's just in case the # two man-db 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 0; }" EXIT touch $LOCKFILE # create/update the mandb database mandb $OPTS exit 0
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