Crontab job to run every hour

Hello,

I have a script that I want to run every hour of the day, 7 days a week.

I tried this:

0 * * * * /home/user/script-to-run

Any help would be appreciated.

Thank you.
cbonesAsked:
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ahoffmannCommented:
your crontab syntax look ok, what's the problem with it?
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Gerwin Jansen, EE MVETopic Advisor Commented:
Try this, to see whether your script is generating any output or error messages:
0 * * * * /home/user/script-to-run 2>&1 >> /home/user/script_to_run.log

Open in new window

This will create (and add) output and error messages of your 'script-to-run to a log file in your home directory.

Is the cron daemon running btw? Try to find out:
ps -ef | grep cron

Open in new window

what do you get?
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cbonesAuthor Commented:
I receive the error message:

Set environment variable USER
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Gerwin Jansen, EE MVETopic Advisor Commented:
>> Set environment variable USER

Where do you get the error? In the logfile?

When running scripts from cron - assume no variables are set. You should set variables in the script yourself or include some script that does it for you.
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cbonesAuthor Commented:
I received that message from the log file created.
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ahoffmannCommented:
the script started by cron has a minimal environment, you need to ensure that every variable you use there is properly defined, also keep in mind that the PATH variable is set very restrictive, best you use a full absolute path to all progarm calls (even system ones like ls, etc.)
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cbonesAuthor Commented:
Where would you set the environment variable for the user?  In the script file?

When I type 'env' to view the environment variables, I see the USER variable set.

Thank you.
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ahoffmannCommented:
why would you need this environment variable, if the cronjob is started by that user?
I recommend that you install that cronjob for the user you want to do the work
however, some cron export the LOGNAME envoronment variable
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Gerwin Jansen, EE MVETopic Advisor Commented:
Can you post (part) of the script that has the USER variable reference? You can either set the variable or replace with the correct path.
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cbonesAuthor Commented:
I ended up running it out of the inittab and in the script checking for a specific time.
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