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Full Discussion: Running scripts with condition
Top Forums UNIX for Dummies Questions & Answers Running scripts with condition Post 753 by 98_1LE on Tuesday 16th of January 2001 09:57:26 AM
Old 01-16-2001
Then use a wrapper.
Create another script like launch.scr1;

#!/bin/sh
touch /tmp/scr1.lock
/path/to/SCR1
wait
rm -f /tmp/scr1.lock

------------------
And then create the wrapper for SCR2 called launch.scr2

#!/bin/sh
if [ -e /tmp/scr1.lock ]
then exit
else /path/to/SCR2
fi

------------------
Than change your cron entries to execute the wrapper scripts instead of the actual scripts/executables.


[Edited by 98_1LE on 01-16-2001 at 10:13 AM]
 

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LEARN ABOUT OSF1

queuedefs

queuedefs(4)						     Kernel Interfaces Manual						      queuedefs(4)

NAME

       queuedefs - Queue description file for at, batch, and cron commands

DESCRIPTION

       The  queuedefs  file describes the characteristics of the queues managed by cron or specifies other characteristics for cron.  Each noncom-
       ment line in this file describes either one queue or a cron characteristic.  Each uncommented line should be in one of the  following  for-
       mats.

	    q.[njobj][nicen][nwaitw] max_jobs=mjobs log=lcode

       The  fields  in these lines are as follows: The name of the queue.  Defined queues are as follows: The default queue for jobs started by at
       The default queue for jobs started by batch The default queue for jobs run from a crontab file

	      Queues d to z are also available for local use.  The maximum number of jobs that can be run simultaneously in  the  queue;  if  more
	      than  njob jobs are ready to run, only the first njob jobs will be run.  The others will be initiated as currently running jobs ter-
	      minate.  The nice(1) value to give to all jobs in the queue that are not run with a user ID of superuser.  The number of seconds	to
	      wait  before rescheduling a job that was deferred because more than njob jobs were running in that queue, or because the system-wide
	      limit of jobs executing (max_jobs) has been reached.  The maximum number of active jobs from all queues that  may  run  at  any  one
	      time.  The default is 25 jobs.  Logging level of messages sent to a log file.  The default is 4.	Defined levels are as follows:

	      level-code   level

		  0	   None

		  1	   Low

		  2	   Medium

		  3	   High

		  4	   Full

       Lines beginning with # are comments, and are ignored.

EXAMPLES

       The  following  file specifies that the b queue, for batch jobs, can have up to 50 jobs running simultaneously; that those jobs will be run
       with a nice value of 20.  If a job cannot be run because too many other jobs are running, cron will wait 60 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.  If a job cannot be run
       because too many other jobs are running cron will wait 60 seconds before trying again to run it.  b.50j20n60w

       The following file specifies that a total of 25 active jobs will be allowed by cron over all the queues at any one time, and cron will  log
       all messages to the log file.  The last two lines are comments that are ignored.  max_jobs=25 log=4 # This is a comment # And so is this

FILES

       Main cron directory The default location for the queue description file.

RELATED INFORMATION

       Commands: at(1), cron(8), crontab(1), nice(1)
       delim off

																      queuedefs(4)
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