Tag crontab of Thanks to antville.org

setting at jobs

shantanuo 10:07h

# at -v 03:00 -f /root/shantanu/testat.sh > /root/shantanu/testat_result.txt 2>&1
# atq
7 2009-03-14 03:00 a root

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common crontab entry

shantanuo 10:20h

30 0 * * * updatedb > /dev/null 2>&1

# Clock synchronization
30 10 * * * CTIPDGT=`/sbin/ifconfig | grep -m 1 "inet addr" | grep -o "17.2.[0,8,26,32,40,56,16,40,56].*" | cut -d "." -f3`; /usr/sbin/ntpdate -u 172.29.${CTIPDGT}.123; /sbin/hwclock --systohc > /dev/null 2>&1

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