[SOLVED] Bash script dont works when executed as cronjob

postcd · 03-25-2014, 06:27 AM

Hello,

i have cronjob:

crontab -l

Code:

* * * * * pkill -f domexpcheck;sh /root/dom/domexpcheck.sh

it runs:

/var/log/cron

Code:

Mar 25 12:11:01 vps crond[17808]: (root) CMD (pkill -f domexpcheck;sh /root/dom/domexpcheck.sh)

but somehow script dont run properly via cronjob. But when i execute cronjob command (pkill -f domexpcheck;sh /root/dom/domexpcheck.sh) from command line it works good... (i receive test email), via cron i dont receive and appears that script wont do the job

stat /root/dom/domexpcheck.sh

Code:

  File: `/root/dom/domexpcheck.sh'
  Size: 5542            Blocks: 16         IO Block: 4096   regular file
Device: 17h/23d Inode: 23953953    Links: 1
Access: (0755/-rwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2014-03-24 23:46:21.000000000 +0100
Modify: 2014-03-24 23:45:46.000000000 +0100
Change: 2014-03-24 23:45:46.000000000 +0100

whoami

Code:

root

head /root/dom/domexpcheck.sh

Code:

[root@vps /]
#pkill -f domexpcheck
set -ex
cd /root/dom

please any ideas why it dont works via cron?

pan64 · 03-25-2014, 06:39 AM

see the bottom of the page, "similar threads"

suicidaleggroll · 03-25-2014, 10:11 AM

Clear your PATH in the shell and then try again

Code:

export PATH=/usr/bin:/bin
pkill -f domexpcheck;sh /root/dom/domexpcheck.sh

That should show you where the problem lies. Chances are you're not using the full path to an executable somewhere.

yzT! · 03-27-2014, 08:08 AM

Quote:

Originally Posted by suicidaleggroll

Clear your PATH in the shell and then try again

Code:

export PATH=/usr/bin:/bin
pkill -f domexpcheck;sh /root/dom/domexpcheck.sh

That should show you where the problem lies. Chances are you're not using the full path to an executable somewhere.

Just an addition:

"Somewhere" = pkill xD

OP change pkill for /usr/bin/pkill

suicidaleggroll · 03-27-2014, 10:41 AM

Quote:

Originally Posted by yzT!

Just an addition:

"Somewhere" = pkill xD

OP change pkill for /usr/bin/pkill

As you said yourself, pkill is in /usr/bin, which is in cron's default path. It's something else, likely a call inside domexpcheck.sh.

postcd · 03-29-2014, 10:38 AM

i followed your instructions, but script dont finish running probably when executed by cron.

in the script im using these commands:

set -ex
mail -s
awk
sed

also classic like "cp", "rm"

I tried to execute command from CLI: export PATH=/usr/bin:/bin
but it did not fixed it

Any idea pelase?

suicidaleggroll · 03-29-2014, 11:07 AM

Quote:

Originally Posted by postcd

I tried to execute command from CLI: export PATH=/usr/bin:/bin
but it did not fixed it

It's not supposed to fix it...it's supposed to recreate cron's environment in your shell so that when you run the script it tells you why it's failing.

chrism01 · 04-01-2014, 06:30 AM

As hinted above, all cmds and files in a cronjob should be preceded by their full absolute path, unless you've taken other steps to ensure the env has everything it needs.

postcd · 04-04-2014, 02:52 PM

Quote:

Originally Posted by chrism01

As hinted above, all cmds and files in a cronjob should be preceded by their full absolute path

thx, i have variables like:

Code:

cd /root/folder
variablename=filename

(so filename without its /full/path/filename) can this be the cause of cron failure?

or i need to do like /bin/cat instead of cat ?

chrism01 · 04-13-2014, 12:12 AM

The key word is 'all'

You can do the var=fname if the file is definitely in the current dir.

See also the 2nd part of my previous 'unless ...'

Basically, when creating a script to be run from cron, assume NOTHING (you know what they say about 'assume'

)

postcd · 04-14-2014, 11:36 AM

it worked when i deleted "pkill -f domexpcheck" from the cron command.