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Full Discussion: For loop or while loop from a text file
Top Forums Shell Programming and Scripting For loop or while loop from a text file Post 303013301 by nms on Monday 19th of February 2018 10:42:32 AM
Old 02-19-2018
For loop or while loop from a text file
Hi all,

i developed a script to measure the uptime of a process in a Solaris 10/11 environments.
All is well, but i came across a situation where there are multiple processes of the same name. Basically i have the following result file:

Code:
beVWARS 13357 19592122
beVWARS 14329 19591910
beVWARS 6371 20436149
beVWARS 6368 20436149
beVWARS 6374 20436149
beVWARS 13361 19592118
beVWARS 13988 19591989
beVWARS 6367 20436149
beVWARS 6365 20436149
beVWARS 6355 20436149
beVWARS 6363 20436149
beVWARS 14055 19591982
beVWARS 13267 19592147
beVWARS 13562 19592097
beVWARS 6361 20436149
beVWARS 14228 19591944

Where first column is the process name, followed by it's pid and the uptime in seconds.

i am trying to find a way to get the uptime vs. an if condition (by a loop?) where if the uptime is less then say 3600 seconds it outputs the process and it's pid on the same line.

Bascially i tried:

Code:
while read line; do
if [[ $line -lt $CRITICAL_SIZE ]]; then
echo -n `grep $line $CRONOUTFILE | awk '{print$2,$3}'`
fi
done <<< "$TIME"

Where $TIME contains only the 3rd column, i.e. the uptime, but it's not working as it should.
$CRONOUTFILE is the output file as shown above.
What i am trying to achieve is to output only the process and pid in a similar output:

Critical - the following processes $PROCESS are less then $CRITICAL_SIZE - $PID:$TIME, $PID:$TIME...,$PID:$TIME

Where the $PROCESS can be easily set an argument in the script.

I am totally confused in using the for loops or the while loop. May you kindly give me some hints?

Rgds,

Matthew
 

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LEARN ABOUT DEBIAN

uptimed

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

NAME

       uptimed - daemon to record uptime records

SYNOPSIS

       uptimed [ -?bv ] [ -e <email> ] [ -i <interval> ] [ -m <count> ]

DESCRIPTION

       This manual page documents the uptimed program.

       uptimed is a daemon that records statistics about a machine's uptime. Use the uprecords(1) program to get uptime record statistics.

OPTIONS

       These command-line options override settings in the configuration file /etc/uptimed.conf

       -?     Show usage

       -b     Create bootid and exit. This option is ignored on BSD systems, because the BSD kernel keeps a static boot time variable in memory so
	      Uptimed does not need to cache this value.

       -p <file>
	      Write PID to pidfile <file>

       -e <email>
	      Send mail to <email> at milestones/records

       -i <interval>
	      Use <interval> seconds for loop

       -m <count>
	      Log a maximum of <count> entries

       -t <timespec>
	      Set the minimum uptime to be considered a record

       -v     Show version information

SEE ALSO

       uprecords(1)

AUTHOR

       Rob Kaper <cap@capsi.com>.

       This manual page was written by Alan Ford <alan@whirlnet.co.uk>, for the Debian GNU/Linux system (but may be used by others). It  was  last
       modified for uptimed version 0.3.7.

								   May 28, 2004 							UPTIMED(8)
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