Re: perl script in nohup running from crontab

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Re^2: perl script in nohup running from crontab by raybies (Chaplain) on Sep 22, 2011 at 12:27 UTC
ALSO, cron has minimal path provided by a minimal shell, so if it runs on your default shell, it may still not run in cron... if the user installed expect or nohup in a dir that's not accessible in cron's shell, you may need to hardpath (provide the full path to every executable run in a script run in cron) them, for them to work within cron.	[reply]
Re^3: perl script in nohup running from crontab by tanuj (Novice) on Sep 22, 2011 at 13:38 UTC
i added the full path as /use/bin/expect but still no luck.	[reply]
Re^4: perl script in nohup running from crontab by choroba (Cardinal) on Sep 22, 2011 at 13:51 UTC
Have you specified the full path of nohup, too?	[reply]
Re^5: perl script in nohup running from crontab by tanuj (Novice) on Sep 22, 2011 at 16:04 UTC
Re^4: perl script in nohup running from crontab by nimdokk (Vicar) on Sep 22, 2011 at 15:41 UTC
You may also want to look at re-setting environment variable for PATH within the script so that the system knows how to find all the executables (/usr/bin, etc.) instead of hardcoding them all in to the command.	[reply]
Re^2: perl script in nohup running from crontab by tanuj (Novice) on Sep 22, 2011 at 13:37 UTC
yes I am able to run this script out side the cron. even if the modify the same script `$cmd=date` and run the same script it will work in corn. so i have some doubt in `$cmd='nohup expect -f /root/nfs_share/SCRIPTS/ncp_run.tcl &';`	[reply] [d/l] [select]
Re^3: perl script in nohup running from crontab by hbm (Hermit) on Sep 22, 2011 at 14:44 UTC
Any errors in `/var/cron/log` or wherever you system keeps them? If you can't view that log, add `2>&1` (or whatever is appropriate on your system) to redirect STDERR to your own log file. Your cron entry starts with "perl". Why, when you have `#!/usr/bin/perl` in your script? I'd also add `#!/path/to/expect -f` to the .tcl, to simplify your `$cmd`. And excessive pipe alert in your `grep`... [root@perflnx14 SCRIPTS]# crontab -l * * * * * /root/nfs_share/SCRIPTS/cron_ncp.pl >>/root/nfs_share/SCRIPT +S/temp.txt ---------------- cron_tab.pl script: #!/usr/bin/perl use warnings; use strict; #my $cmd='nohup expect -f /root/nfs_share/SCRIPTS/ncp_run.tcl &'; my $cmd='nohup /root/nfs_share/SCRIPTS/ncp_run.tcl &'; #my $tmp= `ps -ef \| grep -v grep \| grep ncp_run.tcl \| wc -l`; my $tmp= `ps -ef \| grep -c [n]cp_run.tcl`; if($tmp == 1) { print"already running\n"; } else { print"not running\n"; system $cmd; } [download]	[reply] [d/l] [select]
Re^4: perl script in nohup running from crontab by tanuj (Novice) on Sep 22, 2011 at 15:49 UTC
ya i tried with putting the patj /usr/bin/expect ..but no luck in logs everything looks fine to me: `[root@perflnx14 SCRIPTS]# tail /var/log/cron Sep 21 23:15:01 perflnx14 crond[1932]: (root) CMD (perl /root/nfs_shar +e/SCRIPTS/cron_ncp.pl >>/root/nfs_share/SCRIPTS/temp.txt) Sep 21 23:16:01 perflnx14 crond[1947]: (root) CMD (perl /root/nfs_shar +e/SCRIPTS/cron_ncp.pl >>/root/nfs_share/SCRIPTS/temp.txt) Sep 21 23:17:01 perflnx14 crond[1972]: (root) CMD (perl /root/nfs_shar +e/SCRIPTS/cron_ncp.pl >>/root/nfs_share/SCRIPTS/temp.txt)` [download]	[reply] [d/l]