[SOLVED] Script is not running properly through crontab but working from command line

mitter1989 · 04-23-2014, 06:12 AM

Hi Folks,

I have been facing an issue, I have wrote a very simple script which is running fine if run manually but its not working while run through crontab :

Is there any issue with awk?

#!/bin/bash
LOGSD=`date +%Y%m%d`
IN=$(less *$LOGSD.gz |awk '{ SUM += $7} END { print SUM/1024/1024 }')
echo "IN : $IN" >> /home/output.txt

Thanks in advance.

eudald · 04-23-2014, 06:31 AM

Hi mitter1989,
first of all I would recommend you to put {} to delimit your variables, in case of.

Could it be possible that the problem belongs to not finding this file in the appropriate path? Try to always work with absolute paths.

Regards,
Eudald

chrism01 · 04-23-2014, 07:25 AM

As hinted, the cron environment is notoriously limited, so always use full absolute paths to all cmds and files, unless you have otherwise amended the env first eg by sourcing stuff that sets up a better env.

mitter1989 · 04-23-2014, 08:36 AM

Hi eudald,

Thanks for your reply.

I used absolute path too but not work for me.

I put this command in my script :

less /disk1/log/*20140423.gz | /bin/awk '{ SUM += $7 } END { print SUM/1024/1024 }' > /home/output.txt

It has created an empty file which means cron is running but awk is not working as desired.

While running this script manually it is working absolutly fine, but it is not when running through cron.

can u please guide me or can u share command to get this done? why it happens?

yo8rxp · 04-23-2014, 01:07 PM

so what if putting da' script into a shell file ,and inside after #!/bin/bash put some cd towards it's own absolute path ?
Not sure but could be that DASH cannot compute well math as BASH does.

Then rerun cron in this way

Code:

30 04 * * * /home/proxima1/bkp_script/bkp.sh

____________________
Sorry for quick jump , missed that you allready run shell file via cron ....hummm!

Are ya sure you edited root crontab instead of regular user crontab ?

colucix · 04-23-2014, 01:46 PM

The less command must be tied to a screen in order to work properly and this condition is not true for crontab jobs. Try zcat instead.

mitter1989 · 04-24-2014, 12:16 AM

Thank you folks...

Issue got resolved with zcat command as suggested by colucix.

Thank you colucix for your kind support and I will keep posting such issues...