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UGU: Unix Guru Universe - Unix Tip #4343- January 31, 2025
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Unix Tip #4343- January 31, 2025
RUN DAILY WITH AT
UNIX provides a command called "at"
which can be used to run jobs according
to the specfied time.
To run a particular job in every hour,
every day use the following set of
commands in a file called "at.sh" which
will be executed recursively everyday.
########### CUT HERE ##################
#! /usr/bin/sh
# dt is a variable used to store
# current date
dt=`date | cut -c5-10`
# tm is a variable used to store
# current time
tm=`date | cut -c12-13`
while [ $tm -le 23 ]
do
# "at" is the command ad -f is the
# option used to execute a specified
# file. "file Name" should be an
# executable file.
at -f ./"file Name" $tm $dt
tm=`expr $tm + 1`
done
# With out manual intervention, automatic
# change over to the next day's job
# scheduling
at -f ./"File Name" 2358 $dt
dt=`expr $dt + 1`
at -f ./at.sh 0002 $dt
########### CUT HERE ##################
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
LAST 5 TIPS
4342
- FIND THOSE HIDDEN FILES
4341
- RUN ON LAST SUNDAY
4340
- SIMPLE MASK OVERLOOKED
4339
- AUTO WORD COMPLETION
4338
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