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Asked: 2026-05-20T02:47:59+00:00

I have a bash script mysql_cron.sh that runs mysqldump #!/bin/bash /usr/local/mysql/bin/mysqldump -ujoe -ppassword >

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I have a bash script mysql_cron.sh that runs mysqldump

#!/bin/bash
/usr/local/mysql/bin/mysqldump -ujoe -ppassword > /tmp/somefile

This works fine. I then call it from cron:

20 * * * * /home/joe/mysql_cron.sh

and this creates the file /tmp/somefile, but the file is always empty. I have tried adding a

source /home/joe/.bash_profile

to the script to make sure cron has the right env variables, but that doesn’t help. I see many other people having this problem but have found no solution. I’ve also tried the ‘>’ operator in the crontab to cat any cron errors to a file, but that doesn’t seem to generate any errors. Any troubleshooting ideas welcomed. Thanks!

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1 Answer

  1. Editorial Team

    Add output of error information to file (as Damp has said), so that you can check if there is any error:

    #!/bin/bash
/usr/local/mysql/bin/mysqldump -ujoe -ppassword > /tmp/somefile 2>&1

    You can also take a look at MySQL’s log files at /var/log in case there is some hint there.

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