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Old 04-26-2011, 02:29 AM   #1
etika
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Unhappy crontab not working


SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# m h dom mon dow user command
*/5 * * * * root echo "****************"|mail -s "eeeee" [emailabc@gmail.com[/email]
55 * * * * root cd / && run-parts --report /etc/cron.hourly


what could be the possible reasons of /etc/crontab(systemwide cron) not working
Please help

Last edited by etika; 04-26-2011 at 03:58 AM.
 
Old 04-26-2011, 02:36 AM   #2
repo
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What doesn't work?
Any pointers in the logfiles, mail from cron to root?
Cron uses a limited path, so try to give the whole path to the commands and files.

Kind regards
 
Old 04-26-2011, 03:34 AM   #3
16pide
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what is this / for in:
*/5
and why do you mention "root" in those lines?

Have a look in http://adminschoice.com/crontab-quick-reference for syntax and examples

Also, how did you get crontab list? did you launch:
crontab -l
 
Old 04-26-2011, 03:45 AM   #4
brownie_cookie
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Quote:
Originally Posted by etika View Post
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# m h dom mon dow user command
*/5 * * * * root echo "****************"|mail -s "eeeee" abc@gmail.com
55 * * * * root cd / && run-parts --report /etc/cron.hourly


what could be the possible reasons of /etc/crontab(systemwide cron) not working
Please help
OFFTOPIC
I would strongly suggest that you hide your e-mailaddress

Last edited by brownie_cookie; 04-26-2011 at 04:55 AM.
 
1 members found this post helpful.
Old 04-26-2011, 04:24 AM   #5
repo
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Quote:
Originally Posted by 16pide View Post
what is this / for in:
*/5
Code:
*/5 * * * *
will execute the cron every 5 minutes


Kind regards

Last edited by repo; 04-26-2011 at 04:25 AM.
 
Old 04-27-2011, 02:03 AM   #6
16pide
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I did not know the */5 syntax, but tried it, and it works.
There is still the issue with "root" mentioned on every line, and I'm sure this won't work.

Also, why do you mention the SHELL and PATH variables???
Please remove this from the crontab entries

Here is what I suggest you put in your cron (using crontab -e)

<quote>
5 * * * * echo "****************"|mail -s "eeeee" abc@gmail.com
55 * * * * cd / && run-parts --report /etc/cron.hourly
*/1 * * * * echo cron-works>/tmp/cron-works.txt
</quote>

you should see a file created in /tmp every minute (check with ls -l)
 
Old 04-27-2011, 02:08 AM   #7
16pide
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using crontab -e, enter this AND ONLY THIS in your crontab:
Code:
*/5 * * * * echo "****************"|mail -s "eeeee" abc@gmail.com
55 * * * * cd / && run-parts --report /etc/cron.hourly
*/1 * * * * echo cron-works>/tmp/cron-works.txt
After a minute you should see the file /tmp/cron-works.txt be created
And maybe your other cron lines now work because I removed "root" from them
And also, I removed the variables definition you had put at the beginning (I don't think this is crontab syntax.

Anyway, start with exactly this, and if my */1 line works, then you have a model
 
Old 04-27-2011, 04:38 AM   #8
repo
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Quote:
There is still the issue with "root" mentioned on every line, and I'm sure this won't work.
You are correct, linux cron doesn't have a user field.
Gives an error message, but the cron is executed.

Kind regards

Last edited by repo; 04-27-2011 at 05:09 AM.
 
  


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