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Full Discussion: comment jobs in cron for multiple accounts
Operating Systems AIX comment jobs in cron for multiple accounts Post 302182646 by bakunin on Monday 7th of April 2008 07:48:46 AM
Old 04-07-2008
To prepend every line with an octothorpe ("#") you can use the sed-script

Code:
sed 's/^/# /' <filename>

to delete leading octothorpes use

Code:
sed 's/^# //' <filename>

Hence, a script to comment/uncomment a users sed-script would be (the following is a sketch, no effort towards error handling has been made!):

Code:
#! /bin/ksh

# run this as root. Call the script in the form
#
#     script [-c|-u] <username>
#
#    -c comment out crontab for <username>
#    -u uncomment crontab for <username>
#
#   default behavior is "-c", <username> is obligatory


typeset    chDirection="comment"
typeset    chUser=""
typeset    fTmpFile="/tmp/$$"

if [ "$1" = "-c" ] ; then
     chDirection="comment"
     shift
elif [ "$1" = "-u" ] ; then
     chDirection="uncomment"
     shift
fi

if [ $(lsuser "$1" ; print - $?) -gt 0 ] ; then
     print -u2  "The user account $1 does not exist"
     exit 1
else
     chUser="$1"
     shift
fi

if [ ! -f /var/spool/cron/crontab/${chUser} ] ; then
     print -u2 "User $chUser has no crontab file."
     exit 2
fi

if [ "$chDirection" = "comment" ] ; then
     sed 's/^/# /' /var/spool/cron/crontab/${chUser} > $fTmpFile
fi
if [ "$chDirection" = "uncomment" ] ; then
     sed 's/^# //' /var/spool/cron/crontab/${chUser} > $fTmpFile
fi
mv $fTmpFile var/spool/cron/crontab/${chUser}

exit 0

I hope this helps.

bakunin
 

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LEARN ABOUT XFREE86

queuedefs

queuedefs(4)							   File Formats 						      queuedefs(4)

NAME

       queuedefs - queue description file for at, batch, and cron

SYNOPSIS

       /etc/cron.d/queuedefs

DESCRIPTION

       The queuedefs file describes the characteristics of the queues managed by cron(1M). Each non-comment line in this file describes one queue.
       The format of the lines are as follows:

	      q.[njobj][nicen][nwaitw]

       The fields in this line are:

       q	The name of the queue. a is the default queue for jobs started by at(1); b is the default queue for jobs  started  by  batch  (see
		at(1)); c is the default queue for jobs run from a crontab(1) file.

       njob	The  maximum  number of jobs that can be run simultaneously in that queue; if more than njob jobs are ready to run, only the first
		njob jobs will be run, and the others will be run as jobs that are currently running terminate.  The default value is  100.

       nice	The nice(1) value to give to all jobs in that queue that are not run with a user ID of super-user.  The default value is 2.

       nwait	The number of seconds to wait before rescheduling a job that was deferred because more than njob jobs were running in  that  job's
		queue, or because the system-wide limit of jobs executing has been reached.  The default value is 60.

       Lines beginning with # are comments, and are ignored.

EXAMPLES

       Example 1: A sample file.

       #
       #
       a.4j1n
       b.2j2n90w

       This  file  specifies that the a queue, for at jobs, can have up to 4 jobs running simultaneously; those jobs will be run with a nice value
       of 1.  As no nwait value was given, if a job cannot be run because too many other jobs are running cron will wait 60 seconds before  trying
       again to run it.

       The  b  queue, for batch(1) jobs, can have up to 2 jobs running simultaneously; those jobs will be run with a nice(1) value of 2.  If a job
       cannot be run because too many other jobs are running, cron(1M) will wait 90 seconds before trying again to run it. All	other  queues  can
       have up to 100 jobs running simultaneously; they will be run with a nice value of 2, and if a job cannot be run because too many other jobs
       are running cron will wait 60 seconds before trying again to run it.

FILES

       /etc/cron.d/queuedefs	       queue description file for  at, batch, and  cron.

SEE ALSO

       at(1), crontab(1), nice(1), cron(1M)

SunOS 5.10							    1 Mar 1994							      queuedefs(4)
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