I added the line

*/1 * * * * /home/zach/test.sh

to my crontab, where the contents of /home/zach/test.sh are as follows:

touch /home/zach/test.txt

Yet, no file test.txt is being created in that folder. Is there any reason why cron wouldn't be performing the desired job?

  • Welcome to Ask Ubuntu! In order to answer your question, please provide more information (edit your question). 1) Did you mark the /home/zach/test.sh script executable? (provide the output of ls -l /home/zach/test.sh) 2) Do you have the shebang in the script? (I don't see it in your question) 3) How exactly did you add it to your crontab? (crontab -e?) – gertvdijk Jun 28 '13 at 7:59

First, your test.sh file should look like:


touch /home/zach/test.txt

if you want it to be a bash script.

Second, be sure that this script has permissions of executing. To do so, run this command in terminal:

chmod +x /home/zach/test.sh

Third, be sure that you have permission to create new files in /home/zach.

Fourth, add your new cron job using crontab -e command.

| improve this answer | |

The /1 is unnecessary. Just do

* * * * * /home/zach/test.sh

EDIT: I wrote "In fact, I think that /N means "skip every N-th instance", and in that case will result in skipping every instance. " This is not true, it means "every N-th instance". Therefore both variants work. Therefore, I will remove my answer. I think you have a permissions problem. Why not try

* * * * * /usr/bin/touch /tmp/blah
| improve this answer | |

try * * * * * /usr/bin/sh /home/zach/test.sh

| improve this answer | |
  • January is right, /1 is unnecessary – herrhansen Jun 28 '13 at 10:32

If your script is still not executed, you can refer at http://www.tcpdump.com/kb/os/linux/linux-cron-tutorial.html

| improve this answer | |
  • 2
    Welcome to Ask Ubuntu! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – gertvdijk Jun 29 '13 at 11:51

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