Comments on: Linux Crontab: 15 Awesome Cron Job Examples

By: sofasurfer

sofasurfer — Sat, 06 Mar 2010 07:07:49 +0000

@Ashwin Raj
Monday through Friday, every 1 minute starting at 7:00AM and ending at 6:30PM?

Try this one with two entries, but with no guarantee.
*/1 7-17 * * 1-5 yourscript.sh
0-30/1 18 * * 1-5 yourscript.sh
Combination of day of month and day of week parameter is treaten as OR condition by crontab and therefor I used an if statement to solve this situation.

By: Ashwin Raj

Ashwin Raj — Fri, 05 Mar 2010 17:31:53 +0000

Really nice manual. Is there any way to set up a cron job to run a script Monday through Friday, every 1 minute starting at 7:00AM and ending at 6:30PM? I am wondering if this is possible just with the minute/hour/date/month/day specifiers. I saw an example in one of the comment posts which used a if-then conditional execution of a script. Is that the only way to go.

By: sofasurfer

sofasurfer — Thu, 25 Feb 2010 13:09:33 +0000

@Don @SathiyaMoorthy To execute a script on some days of a week and only between some days of a month you can do it this way: # Nur am Montag (1) oder am Donnerstag (4) 10 19 2-27 * * if [ "$(date +\%u)" = "1" ] || [ "$(date +\%u)" = "4" ] ; then ./yourscript.sh ; fi This here will not work !!! 10 19 2-27 * 1,4

By: Top 5 Best Linux OS Distributions

Top 5 Best Linux OS Distributions — Fri, 05 Feb 2010 04:58:24 +0000

[...] Linux Crontab: 15 Awesome Cron Job Examples [...]

By: guntis

guntis — Wed, 06 Jan 2010 19:18:07 +0000

excellent!!!
have never seen better manual

By: siegfried

siegfried — Sun, 03 Jan 2010 12:10:44 +0000

for one off jobs use the ‘at’ command. cron actually runs both ‘at’ and ‘cron’ jobs ( the ‘c’ and ‘a’ in the log file ). at is very flexible wrt scheduling, and at copies your current environment before running the job so no more anooying erros with your profile, path, etc. also you don’t have to remember to remove your one off job from your crontab, or take that extra small risk of making a mistake each time you edit your crontab. btw, to reduce the chance of making a mistake while edting your crontab, consider doing something like :

crontab -l > crontab.old
cp crontab.old crontab.new
vi crontab.new
diff crontab.old crontab.new
crontab crontab.new

a good habit to get into esp. if you want to minimise the chance of an error in a production environment.

By: The Beginner’s Guide to The Geek Stuff – A Guided Tour

The Beginner’s Guide to The Geek Stuff – A Guided Tour — Tue, 29 Dec 2009 15:12:54 +0000

[...] Linux Crontab: 15 Awesome Cron Job Examples [...]

By: Leslie Satenstein

Leslie Satenstein — Fri, 11 Dec 2009 02:37:35 +0000

Just fill out the line with

mm hh dayofmonth monthyear dayofweek command

it will work on that day,

30 1 31 5 Mon echo “Do this command in a year where May 31 is a Monday”

By: Salsan Jose E

Salsan Jose E — Tue, 08 Dec 2009 04:33:28 +0000

How to set up one time Cron Job ?

By: Sharad

Sharad — Mon, 23 Nov 2009 12:37:14 +0000

Very informative…and superb way to demonstrate daily usages…