bash script not working as expected when executed with cron

Asked May 27 '18 at 07:13

Active May 27 '18 at 07:19

Viewed 36 times

I have the following bash script that works as expected when I manually run it

#!/bin/bash

result=$(curl http://myip.com)
echo "$result"

I have created the following cron

*/5 * * * * ./root/script.sh > /root/script.result

The file "script.result" does get created, but it's blank. Any idea what is wrong that the script produces no output when executed by cron?

asked May 27 '18 at 07:13

david

I suggest to add full path to script.sh. – Cyrus May 27 '18 at 07:15
I am using the full path, It's `./root/script.sh` – david May 27 '18 at 07:15
Not setting the `SHELL` as `/bin/bash` in the cron, using just the interpreter as `#!/bin/bash` won't work. The cron doesn't run by default in the `bash` shell – Inian May 27 '18 at 07:17
2

Set `SHELL=/bin/bash` in the line above your cron job – Inian May 27 '18 at 07:18
@Inian, thanks Inian, so any O.S cron will not have `bash` even bash system also? Could you please do let me know here, it is good learning to know about this command. – RavinderSingh13 May 27 '18 at 07:27
1

@RavinderSingh13: `cron` runs in a minimalist environment, with a different `$PATH` – Inian May 27 '18 at 07:29
Try to use full path for your curl command. – Rico Chen May 27 '18 at 20:59
Change your cron entry to `*/5 * * * * ./root/script.sh > /root/script.result 2> /root/script.errors` . Tell us what the errors file contains after the cron entry runs. – Mark Plotnick May 28 '18 at 05:56

0 Answers0