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UNIX for Dummies Questions & Answers
Crontab works but does not execute script
Post 302213176 by renegadeice on Wednesday 9th of July 2008 11:29:26 AM
07-09-2008
Crontab works but does not execute script
Hi guys, my first post time here, so hello to everyone 
I've got a problem running one of my scripts at work. I can get crontab working on simple scripts (i.e. one that just outputs date to a temp file). but it won't correctly execute the script i want to use.
My script is a PHP script. It will log into different machines on the network, runs commands, then pipe the output to local files. This script works if executed manually, can't find any faults here. The script itself and the files it writes to have been set to +777 permissions.
The script calls a sub-script, which is an Expect script. I use this to SSH into the various machines on the network. It does not read/write to files. This script's permissions has been set to +777 as well. It runs correctly when manually executed.
Now when I set the crontab job to run, I know that it actually tries to call the script. This is because the call gets logged in the crontab logs (which is located in /var/log/cron). So it calls the script, but i'm not getting any output.
my crontab file looks something like this:
*/10 * * * * /usr/bin/php /absolute/path/to/script.php
0 * * * * /absolute/path/to/script.php
The first line is intended to call the script every 10 minutes. The second line is intended to call the script every hour. They're both the same script (i've just been experimenting with syntax which is why the calls to the script are different).
Any ideas? Thanks in advance for your help, guys!
I've got a problem running one of my scripts at work. I can get crontab working on simple scripts (i.e. one that just outputs date to a temp file). but it won't correctly execute the script i want to use.
My script is a PHP script. It will log into different machines on the network, runs commands, then pipe the output to local files. This script works if executed manually, can't find any faults here. The script itself and the files it writes to have been set to +777 permissions.
The script calls a sub-script, which is an Expect script. I use this to SSH into the various machines on the network. It does not read/write to files. This script's permissions has been set to +777 as well. It runs correctly when manually executed.
Now when I set the crontab job to run, I know that it actually tries to call the script. This is because the call gets logged in the crontab logs (which is located in /var/log/cron). So it calls the script, but i'm not getting any output.
my crontab file looks something like this:
*/10 * * * * /usr/bin/php /absolute/path/to/script.php
0 * * * * /absolute/path/to/script.php
The first line is intended to call the script every 10 minutes. The second line is intended to call the script every hour. They're both the same script (i've just been experimenting with syntax which is why the calls to the script are different).
Any ideas? Thanks in advance for your help, guys!
Last edited by renegadeice; 07-09-2008 at 12:32 PM.. Reason: added crontab file contents
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LEARN ABOUT OSF1
uudemon
uudemon(4) Kernel Interfaces Manual uudemon(4) NAME
uudemon.admin, uudemon.cleanu, uudemon.hour, uudemon.poll - Administrative shell scripts for polling remote systems, cleaning up spool directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons SYNOPSIS
These shell scripts reside in the following directory: /usr/lib/uucp DESCRIPTION
All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the scripts, remove the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file. This script reports status to the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID (uucpa) or root. This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com- mand is run with the following parameters: -C7, -D7, X2, -o2, -W1. This script runs the uusched and uuxqt daemons in the background. This script polls the systems listed in the /usr/lib/uucp/Poll file. The uudemon.poll script should be scheduled before the uudemon.hour script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script. FILES
Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files. Contains the uucp file. RELATED INFORMATION
Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1) Files: /usr/lib/uucp delim off uudemon(4)