Script produces different result when executed by Bash than by cron

Question

Please consider following crontab (root):

SHELL=/bin/bash
...
...
0 */3 * * * /var/maintenance/raid.sh

And the bash script /var/maint

Answer 1

As indicated in the comments, do use full paths on crontab scripts, because crontab does have different environment variables than the normal user (root in this case).

In your case, instead of mdadm, /sbin/mdadm makes it.

How to get the full path of a command? Using the command command -v:

$ command -v rm
/bin/rm