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Full Discussion: Odd results when my script runs from cron..
Top Forums Shell Programming and Scripting Odd results when my script runs from cron.. Post 302772447 by Marc G on Monday 25th of February 2013 03:26:32 PM
Old 02-25-2013
Odd results when my script runs from cron..
Hi folks,

So I wrote a script to run "top", "awk" out values fro the "top" and send the results to a data file.

I then set it to run in cron every 15 minutes.

Now I'm noticing that the script, and it's sub-commands are not always cleanly finishing and, in my investigations, I am also noticing that the script is launching differently than expected from cron. Some of this evidence comes from my ps, which shows processes lingering after completing as shown here:
Code:
     UID   PID  PPID   C    STIME TTY         TIME CMD
    root 26793   287   0   Feb 21 ?           0:00 sh -c /usr/apps/client/bin/gatherOSKPI.sh
    root 26853 26796  45   Feb 21 ?        6539:10 /usr/apps/client/bin/top -n 1 -q
    root 26859 26796   0   Feb 21 ?           0:00 /usr/bin/sed s/^[       ]*//;s/[        ]*$//
    root 26857 26796   0   Feb 21 ?           0:00 /usr/bin/awk -F; {print $2}
    root 26796 26793   0   Feb 21 ?           0:00 /bin/ksh /usr/apps/client/bin/gatherOSKPI.sh
    root 26854 26796   0   Feb 21 ?           0:00 /usr/bin/head -n 5
    root 26858 26796   0   Feb 21 ?           0:00 /usr/bin/awk -F: {print $2}
    root 26858 26796   0   Feb 21 ?           0:00 /usr/bin/awk -F: {print $2}
   root 26858 26796   0   Feb 21 ?           0:00 /usr/bin/awk -F: {print $2}
    root 23755 23721   0   Feb 23 ?           0:00 /usr/bin/awk -F, {print $3,$4}
    root 23721 23720   0   Feb 23 ?           0:00 /bin/ksh /usr/apps/client/bin/gatherOSKPI.sh
    root 23748 23721  46   Feb 23 ?        3300:18 /usr/apps/client/bin/top -n 1 -q
    root 23720   287   0   Feb 23 ?           0:00 sh -c /usr/apps/client/bin/gatherOSKPI.sh
    root 23756 23721   0   Feb 23 ?           0:00 /usr/bin/awk -F  {print $1","$4}
    root 23751 23721   0   Feb 23 ?           0:00 /usr/bin/head -n 5

Note that sometimes the script is launched with the flag "-c", other times not, and once preceded by "/bin/ksh"

The awk and head output are due to commands in the script.

Can anyone suggest why this behavior occurs?
Largely, I am being given a chance to advance, but need to find why these processes are not ending once their run is complete

Thanks in advance,

Marc
 

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LEARN ABOUT OSF1

uudemon.cleanu

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)
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