I have a cronjob created using this tutorial: http://www.matt-helps.com/automatic-backup-of-mysql-database-to-s3/

It works when i run this command sudo sh s3BucketBackupScript.sh

But I can't get it run properly when configuring it in Cron. The script is modded with +x.

I configured it using sudo crontab -e as follows:

# For more information see the manual pages of crontab(5) and cron(8)
# m h  dom mon dow   command

* * * * * /bin/sh /home/ubuntu/s3BucketBackupScript.sh

but no results. I think there is an empty line after the .sh lines. If I run the script without sudo it doesn't produce anything, so that's why I added it to sudo crontab -e.

Any hints would be very appreciated.

  • * * * * *? What is that to suppose to do? And I myself would have used "/etc/crobtab". – Rinzwind Feb 14 '16 at 16:52
  • run every minute as I'm testing the script? – Guy Hagemans Feb 15 '16 at 8:39
  • and how long does that backup take? more then 1 minute? – Rinzwind Feb 15 '16 at 8:41
  • no usually a second or 10 :) – Guy Hagemans Feb 15 '16 at 9:11
  • 1
    can you post the content of s3BucketBackupScript.sh? – Praveen VT Feb 23 '16 at 8:51

Please, Do you check permission allow user run cron in file /etc/cron.allow. if it not have on server, you can create and add line:

## [root@test]# cat /etc/cron.allow

After add line ok, you can restart crond with command:

[root@test test]# service crond restart

If after change but its not run command, maybe you can use user root and add command example in crontab -e is:

* * * * * su - [user you must run command] -c "/bin/sh /home/ubuntu/s3BucketBackupScript.sh"

Add command ok, you should restart crond with command: [root@test test]# service crond restart .

I think with its maybe help you run command in crontab.


Please do check your s3BucketBackupScript.sh script and ensure there is no relative paths given.

CRON of an individual user sets the user's home directory as PWD.

This may worked manually from terminal because you were in the exact directory to interpret the relative paths correctly.

  • Thanks! I indeed removed a few relative paths.. (I guess all of them actually). Also, should I change this line from "0 3 * * * /bin/sh /home/ubuntu/s3BucketBackupScript.sh" to "0 3 * * * /home/ubuntu/s3BucketBackupScript.sh"? – Guy Hagemans Feb 23 '16 at 13:19
  • you could do like this, 0 3 * * * cd /home/ubuntu && sh s3BucketBackupScript.sh – Praveen VT Feb 26 '16 at 9:02

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