152 lines
2.7 KiB
Plaintext
152 lines
2.7 KiB
Plaintext
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#!/bin/sh
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#
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# NAME: cronEdit
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#
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# SYNTAX: cronEdit <-a|-d > <cron file>
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#
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# DESCRIPTION: Edits crontab for current user to add/change/remove entries
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# and re-initialise "cron", it works for both AIX and Linux
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#
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# FLAGS: -a Add / Change cron entries to root's crontab
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# -d Removes cron entries from root's crontab
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#
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# DEPENDENCIES: None
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#
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# CHANGE HISTORY:
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#
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# Date Author Vers. Description
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# -----------------------------------------------------------------------------
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# 1996-12-30 JDW 1.0 Original
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# 2013-06-06 xCAT 1.1 Updated version to ship with xCAT
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usage()
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{
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cat << EOF
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Usage: $PROGNAME <-a | -d> <cron file>
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EOF
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}
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##############################################################################
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AddCron()
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{
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crontab -l | awk -v "CronFile=$1" \
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'BEGIN { FoundCronEntries="False" ;
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StartString=sprintf ("### START: Added by cronEdit from file: %s", CronFile) ;
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EndString=sprintf ("### END: Added by cronEdit from file: %s", CronFile)
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}
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{
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# Reading existing roots crontab
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if ( match ($0, StartString) > 0)
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{
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FoundCronEntries="True"
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continue
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}
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if ( match ($0, EndString) > 0)
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{
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FoundCronEntries="False"
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continue
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}
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if ( FoundCronEntries == "False")
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{
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print $0
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}
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}
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END {
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printf ("%s\n", StartString)
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SystemString = sprintf ("cat %s", CronFile)
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system (SystemString)
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printf ("%s\n", EndString)
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}' > $CRONTEMP
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}
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##############################################################################
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DeleteCron()
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{
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crontab -l | awk -v "CronFile=$1" \
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'BEGIN { FoundCronEntries="False" ;
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StartString=sprintf ("### START: Added by cronEdit from file: %s", CronFile) ;
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EndString=sprintf ("### END: Added by cronEdit from file: %s", CronFile)
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}
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{
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# Reading existing roots crontab
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if ( match ($0, StartString) > 0)
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{
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FoundCronEntries="True"
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continue
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}
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if ( match ($0, EndString) > 0)
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{
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FoundCronEntries="False"
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continue
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}
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if ( FoundCronEntries == "False")
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{
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print $0
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}
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}' > $CRONTEMP
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}
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##############################################################################
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PROGNAME=`basename $0`
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CRONTEMP="/tmp/cron.tmp$$"
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# AIX
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if [ -e "/var/spool/cron/crontabs/$USER" ]
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then
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CRONROOT="/var/spool/cron/crontabs/$USER"
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else
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CRONROOT="/var/spool/cron"
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fi
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if [ $# -ne 2 ]
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then
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usage
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exit 1
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fi
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while getopts ':a:d:' opt
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do
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case "$opt" in
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a) AddCron "$OPTARG"
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;;
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d) DeleteCron "$OPTARG"
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;;
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*) usage
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exit 2
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;;
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esac
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done
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# Now respawn cron if necessary......
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crontab -l | diff - $CRONTEMP 2>&1 > /dev/null
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if [ $? -ne 0 ]
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then
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# Changes are required......
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if [ `uname` = "AIX" ]
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then
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cp $CRONTEMP $CRONROOT
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CRONPID=`ps -ef | grep "/usr/sbin/cron" | grep -v grep | awk '{ print $2 }'`
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kill $CRONPID
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else # Linux: common user could not read/write /var/spool/cron
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crontab $CRONTEMP
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fi
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fi
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exit 0
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