Tango Icons © Tango Desktop Project. For example: some-command > /dev/null This will redirect only standard output, and not error output (which is usually what you want, since you want to be informed of errors). Check /var/log/cron.log or /var/log/messages for errors. INFO: The cygwin user name for account User is User. http://haiteq.com/crontab-not/crontab-not-working.php
The best choice is to ensure that your crontab has a blank line at the end. 4th Berkeley Distribution 29 December 1993 CRONTAB(1) share|improve this answer edited Feb 2 '11 at Blueprint a sestina Start a coup online without the government intervening How can I safely handle a concentrated (fuming) nitric acid spill? up vote 116 down vote favorite 81 This is a Canonical Question about using cron & crontab. Create a new crontab file, or edit an existing file. # crontab -e [username]where username specifies the name of the user's account for which you want to create or edit a http://askubuntu.com/questions/23009/reasons-why-crontab-does-not-work
Next time, try logging the STDERR as well. The system crontabs have an extra field 'user' right before the command-to-run. I found out by issuing the command cat /var/log/syslog | grep crontab and the output showed the problem: Jul 2 08:16:01 shiva cron: (*system*) RELOAD (/etc/crontab) Jul 2 08:16:01 shiva cron:
And if you have multiple monitors, don't forget to specify on which one the program is to be run. cron does not read that file in old versions of Ubuntu, so runnning somecommand from your script will fail when run with cron, but work when run in a terminal. This can be recovered from the existing crontab using crontab -l if it gets clobbered. Crontab Is Not Working In Linux put #!/bin/sh at top) Cron date related bugs If your date is recently changed by a user or system update, timezone or other, then crontab will start behaving erratically and exhibit
It was actually sliiiightly different in my case. –Izkata Jan 18 '12 at 15:16 5 @pbr If such directories are left writable to others, the system is already compromized. –geirha Crontab Not Running Bash Script If a blank cron.deny file has been created, that will change to the standard behavior users of other operating systems might expect: cron only available to root or users in cron.allow. I'm probably doing something silly wrong but I can't see it (noob) Paul Code: [email protected]:~# crontab -l 17 11 * * * /etc/webmin/cron/tempdelete.pl 20 16 10 8 * shutdown -P 0 Koch Mar 30 '14 at 22:42 will try this thank you :-) –Roshan Bhandari Mar 31 '14 at 5:01 1 Another thing for the checklist: make sure whatever
So change the shutdown command to reference the full path: /sbin/shutdown . . . Start Cron An asterisk (*) in a field signifies the entire range for that field (e.g. 0-59 for the minute field). The fields are separated by spaces. Rusty could lose his command.
HTH. http://stackoverflow.com/questions/22743548/cronjob-not-running If you need to pass that character into a script, you need to escape it as "\%". Crontab Not Running Shell Script Why is (a % 256) different than (a & 0xFF)? Cron: Unrecognized Service If you continue to find it not running, I'd look at /var/log/auth.log and /var/log/syslog, search on cron and see if you see anything going on.
This file could be used for other cron commands, but probably shouldn't be. navigate to this website I recommend against that. Be VERY careful when using the percent (%) sign in your command. Generally a cron job problem is caused by the environment being wrong in the script - things like your path etc are not set by cron, so something that works from Cron No Mta Installed
How can I force a reload? –CMCDragonkai Jan 10 '14 at 18:00 2 @CMCDragonkai /etc/init.d/cron restart ? –leonbloy Jan 10 '14 at 18:12 9 Ah it's that easy. How do I make an alien technology feel alien? Check if the script has an error, by doing a dry run on the CLI when testing your command, test as the user whose crontab you are editing, which might not More about the author You may want to run a script some number of times per time unit.
Using 'curl http://something.com/somefile.xls' was causing a script I wrote to hang and never complete because it spits out a newline followed by a progress line. Crontab Not Running Python Script more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed The first 5 fields of the line represent the time(s) when the command should be run.
more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Yikes! crontab(5) is a per user file that contains instructions for cron(8). Crontab Not Running Centos An example is the program goaccess for analysing web server log files.
Koch Mar 30 '14 at 11:44 3 Bear in mind that cron jobs do not run with all the environment that an interactive command would - for instance, when you Cron sends an email containing stdout and stderr if the script produces any output. For example, in order to set the editor to be nano (a very easy editor to use) add this line to .bashrc: export EDITOR=nanoIt is sensible to test that your cron click site Each of the above crontabs is associated with a user, even the root crontab, which is associated with the root user.
and doesnt seem to do anything or recognize any commands. ~> crontab -e 121 0 * * * * /usr/local/testcron ? ^C ? :q ? :w ? :x ? ^Z + Not the answer you're looking for? The cron job specification format differs between users' crontab files (/var/spool/cron/username or /var/spool/cron/crontabs/username) and the system crontabs (/etc/crontab and the the files in /etc/cron.d). Still thanks a lot!
However anacron itself is invoked from the /etc/crontab file. This may be what you observed. To get around that, just set your own PATH variable at the top of the script. Cron usually send mail to the user when there is something wrong.
And as for /opt/someApp/bin, why on earth wouldn't it have sane permissions/ownership? Isn't the BBC being extremely irresponsible in describing how to authenticate an account-related email? The last command in my crontab doesn't run Cron generally requires that commands are terminated with a new line. Debugging cron commands Check the mail!
UNIX is a registered trademark of The Open Group. The default path is usually /bin:/usr/bin so only standard commands will run. any sane admin would ensure sane permissions/ownership on system files. –geirha Apr 10 '12 at 6:36 1 @pbr It seems we could go on forever, yes. Please run the script /usr/bin/cronbug and ATTACH its output (the file cronbug.txt) to your e-mail.
The second type is to be found in the directory /etc/cron.d. These Aren't Roasted! How to prove that authentication system works, and that the customer is using the wrong password? Please click the link in the confirmation email to activate your subscription.