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Full Discussion: CRON shell script only runs correctly on command line
Top Forums Shell Programming and Scripting CRON shell script only runs correctly on command line Post 302484357 by louieaw on Thursday 30th of December 2010 06:12:59 PM
Old 12-30-2010
Well, because of the firmware, though it is unix based, it requires that you specify a user in the cron file.
Check it out here: http://www.dd-wrt.com/wiki/index.php/CRON (Darn thing won't let me post real URLs yet)

That been my holy book for this project.

I think you might be right about the PATH thing. (I also have a theory that something with the quotes is messing it up) Whatever it is, I realized ssh doesn't output when run from cron. With that being said:

I actually managed to get some sort of workaround that does just fine.

- I made a script on the remote machine that does the query and then outputs the code to a file named 'codelog'
- The script on the router runs, sshes, and executes the script on the remote machine
- Then, the script runs 'scp' to copy the 'codelog' file from the remote machine to the router
- Finally, I set the output of 'cat codelog' as my variable.
- And well, it works!


Thanks so much!
 

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LEARN ABOUT REDHAT

crond

CRON(8) 						      System Manager's Manual							   CRON(8)

NAME

       cron - daemon to execute scheduled commands (Vixie Cron)

SYNOPSIS

       cron

DESCRIPTION

       Cron should be started from /etc/rc or /etc/rc.local.  It will return immediately, so you don't need to start it with '&'.

       Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory.  Cron
       also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see  crontab(5)).	Cron  then
       wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute.  When execut-
       ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab,	if
       such exists).

       Additionally,  cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
       cron will then examine the modtime on all crontabs and reload those which have changed.	Thus cron need not be restarted whenever a crontab
       file is modified.  Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.

SEE ALSO

       crontab(1), crontab(5)

AUTHOR

       Paul Vixie <paul@vix.com>

4th Berkeley Distribution					 20 December 1993							   CRON(8)
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