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Old 08-09-2009, 10:27 PM   #1
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run crontab exclude specific date

I would like to ask if I can run a crontab job to skip a specific date , eg. to skip the crontab job to run on holiday ? thx
Old 08-09-2009, 11:22 PM   #2
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You could have a file (e.g. /somewhere/noscript.txt) listing the dates on which you don't want to run the script. e.g.
Then, the script called by cron first checks to see if today's date is in noscript.txt, and, if so, exits immediately:

if [ grep -q `date +%F` /somewhere/noscript.txt ]; then
  exit 0

Old 08-09-2009, 11:22 PM   #3
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I would like to ask if I can run a crontab job to skip a specific date , eg. to skip the crontab job to run on holiday ? thx
Not really. You're best of to write a wrapper script to whatever
you want to run. Have cron attempt to run it every day, and inside the
wrapper-script check for the date you *don't* want to run your job
and exit if it's the current date.

E.g., something like this:
TODAY=$(date "+%Y%m%d")
if [ "$TODAY" -ne "20091224" ]; then
  run your job
  exit 0


Last edited by Tinkster; 08-09-2009 at 11:25 PM. Reason: beat by a few seconds =D
Old 08-10-2009, 01:36 AM   #4
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thx all much.
Old 08-10-2009, 07:35 AM   #5
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Holiday dates are different globally, so it wouldn't make sense to make cron more complicated just to take care of that. It would be very error-prone, I guess. Beyond the already suggested wrapper scripts you can also add a single line script directly into the crontab file to run a test condition before launching the real task. A sample crontab entry:
0 0 * * * if [ $(date "+%Y%m%d") -ne "20091224" ]; then echo Non-Holiday; else echo Holiday; fi;


Last edited by jeromeNP7; 09-04-2009 at 10:21 PM.
Old 12-30-2009, 12:53 PM   #6
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had same exact problem... wrote a script others could use too:

laptop: cat isholiday
# Written: 12-30-09 By: AWJurgensen
# Intent: Check if today or supplied date is a holiday
# Usage: isholiday [YYYYMMDD]
# Files: ~/.holidays contains Declared Holidays in YYYYMMDD fmt
# Tip: Useful in crontab to exclude jobs on holidays:
# * * * * * bin/isholiday || bin/runmyjob

HOL=$(echo ~/.holidays)
TODAY=$(date "+%Y%m%d")

if [ ! -s $HOL ] ; then
echo "$0: Error: $HOL file not found!"
elif [ "$(grep "^$DATE" $HOL)" != "" ] ; then
exit 0
exit 1

laptop: cat ~/.holidays
20100101 New years Day
20100118 Martin Luther King Day
20100531 Memorial Day
20100705 Independence day
20100906 Labor Day
20101111 Veterans Day
20101125 Thanksgiving Day
20101225 Christmas
laptop: isholiday 20100101 && echo ishol
laptop: isholiday 20100102 && echo ishol


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