limit the number of jobs to run.


 
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Old 06-15-2007
limit the number of jobs to run.

i just want to get the BackGround status and limit the number of jobs to run the at a time.

can i able get the back ground exit status ? that i code below.

can jobs -l limit the number of jobs to run ?

total is this script looks fine ?


cat run_job.ksh

#!/usr/bin/ksh
####################################
typeset -u SCHEMA_NAME=$1
count=0
cat $home/tablist.list|
while read table
do
sas $table.sas &
count=`expr $count + 1`
echo $count
RC=$?
if (( $RC > 0 )); then
echo " executing the n't succes for $table :$RC "
exit 1
fi
cnt=$(jobs -l | wc -l )
if [[ $cnt -le 5 ]] ; then
continue
else
wait
#echo "In the wait mode"
fi
done
exit 0
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ATRUN(8)						    BSD System Manager's Manual 						  ATRUN(8)

NAME
atrun -- run jobs queued for later execution SYNOPSIS
atrun [-l load_avg] [-d] DESCRIPTION
Atrun runs jobs queued by at(1). Root's crontab(5) file /etc/crontab has to contain the line */5 * * * * root /usr/libexec/atrun so that atrun gets invoked every five minutes. At every invocation, atrun will start all the jobs in the lowercase queues whose start time has elapsed. In addition, if the load average over the last minute was less than the specified limit then a maximum of one batch job (denoted by the uppercase queues) is started. Before starting a job, atrun will check the status of its owner's account with pam(3) and refuse to run the job if the account is unavail- able, e.g., locked out or expired. OPTIONS
-l load_avg Specify a limiting load factor, over which batch jobs should not be run, instead of the default of 1.5 * number of active CPUs. -d Debug; print error messages to standard error instead of using syslog(3). WARNINGS
For atrun to work, you have to start up a cron(8) daemon. FILES
/etc/pam.d/atrun pam.conf(5) configuration file for atrun /var/at/jobs Directory containing job files /var/at/spool Directory containing output spool files SEE ALSO
at(1), crontab(1), pam(3), syslog(3), crontab(5), pam.conf(5), cron(8) BUGS
The functionality of atrun should be merged into cron(8). BSD
October 30, 2012 BSD