Shell Crontab not working

Tag: shell , cron Author: loufay Date: 2012-12-16

GNU nano 2.0.9 File: /tmp/crontab.XXXXzBQgwS

*/5 * * * * ~/
*/5 * * * * ~/
*/5 * * * * ~/
*/5 * * * * ~/

By right my code should run every 5 minutes. but it doesn't run

[[email protected] ~]# ls -l
total 756
-rw-------. 1 root root   1688 Dec 18 09:45 anaconda-ks.cfg
-rwxrwxrwx  1 root root    139 Dec 28 18:18
-rwxrwxrwx  1 root root    140 Dec 28 18:19
-rwxrwxrwx  1 root root    456 Dec 28 18:18
-rw-r--r--. 1 root root  15469 Dec 18 09:45 install.log
-rw-r--r--. 1 root root   5267 Dec 18 09:44 install.log.syslog
-rwxrwxrwx  1 root root    503 Dec 19 19:26
drwxr-xr-x  9 1001 1001   4096 Dec 18 11:08 nginx-1.3.2
-rw-r--r--  1 root root 722119 Jun 26  2012 nginx-1.3.2.tar.gz
[[email protected] ~]#

It should run ~/ as my code if i run manually it will work

[[email protected] ~]#
[[email protected] ~]# ~/
Stopping php-fpm:                                          [FAILED]
Starting php-fpm:                                          [  OK  ]

More about check_phpfpm, it is a script that check if the service php-fpm is running, if it not working ,it will execute and restart php-fpm, but the issue is if i run manually its work. but the crontab does not restart, the server php-fpm crashed and went to stop mode, but this script does not restart, my crontab should execute the script every 5 mins to check.

What is wrong with my crontab setup? Thanks for all help

Cron will generally send you email about it's output. Can you check ur email using mail on your local system?
Why not just looking at the log file inside /var/log ?
Two common problems: not setting your environment (PATH, etc.) or not using the expected shell... the defaults to both are very minimal under cron. Running from command line but not under cron is a classic symptom of this. Quick test: */5 * * * * . ~/.profile && your_command
Don't assume anythig about current directory or PATH settings in cronjobs. Instead, set them explicitely. Also: I don't think that the tilde will be expanded, use an explicit path ( eg /home/root/ )
Who's crontab are those running as? I see the log files are owned by root, so in the crontab, what is ~?

Best Answer

First make sure your scripts are executable:

chmod u+x name_of_script

Now add it to crontab:

crontab -e

Also make sure you are writing the full path in the crontab e.g:

*/5 * * * * /home/user/


crontab -e (which edits your crontab) works, but personally I never use it. I keep my crontab file in a source control system and use crontab filename to install it. That way I avoid losing information, and it's easier to recover from mistakes.

Other Answer1

Are you sure the CRON service is firing? Maybe it is not even running.

Depending on your distro you can check that its running it not using something like...

# service crond status

If it is running, and your scripts are not firing then there is probably a permissions or location issue. Can you use ~ via CRON? Maybe try putting the absolute path to your scripts in such as /home/user/ for example.

If your getting an error back from CRON, either check your CRON log, probably located at /var/log/cron or somewhere similar or have the CRON output emailed to you by adding the following on the first line of your CRONTAB...

MAILTO="[email protected]"