无法在VPS上运行CRON作业

Question

I have created a 'sh' script on my VPS which makes copies of the filesystem and SQL and saves them to the same folder which I am going to then push to a backup media. I know my script is working for this as when I log in over SSH as root and run the command manually it creates a zip file and the SQL backup fine but the CRONjob I have created to execute this script is not working. I have created the following cron job in '/etc/crontab':

    SHELL=/bin/sh
    PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

   # m h dom mon dow user  command
   17 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
   4 6 * * *       root    test -x /usr/sbin/anacron || ( cd / && run-    parts --report /etc/cron.daily )
   20 1 * * 7      root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
   51 5 1 * *      root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
    * * * * *      root    /home/backup/test.sh 

The 5th entry is the one I have created to test. The path is correct and I used an absolute path as instructed before. I have written a simple script called test/sh which outputs some text to a file (test.txt) to test the CRON job and it doesn't work. I am using the command 'tail -f' to monitor changes to the text file and it never gets called. The script works when executed manually though.

Here is the simple 'test.sh' file. This works correctly when called manually.

#!/bin/bash

echo "Dumping at:  $(date)" >> /home/backup/test.txt                                                                                                                                                                        

I understand there may be permissions issues but I thought if I was executing this as 'root' this should be fine? Can anyone see where I am going wrong?

Thanks

Answer 1

So, after a few hours of searching I realised something stupid. I had left out the 'bash' command from the crontab file.

I changed my line to this:

• • • • • root bash /home/backup/test.sh

And it is now running.