Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Script to run 100jobs at a time from cron
Top Forums Shell Programming and Scripting Script to run 100jobs at a time from cron Post 302069080 by Perderabo on Wednesday 22nd of March 2006 01:37:11 PM
Old 03-22-2006
Unless you have 100 cpu's you are not going to execute 100 processes simultaneously. But you don't need to wait for one process to finish before launching a second process. Just use the ampersand.

#! /usr/bin/ksh
job1
job2
job3
exit 0

#! /usr/bin/ksh
job1 &
job2 &
job3 &
wait
exit 0

The first script runs the commands sequentially. The second one does not. Note that either script is counted as one job by cron, not 3 or 4 jobs. If it launched 10,000 subjobs, cron still counts it as one job. Depending on your version of unix, you may have a problem with another limit usually called maxuprc which is the max processes a non-root user can have. You may need to to increase that.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Can run script Manually, but not through Cron?

Hi all, I have a main script (called OracleCleanup) that runs some sql queries. that runs off a wrapper script which contains the sources for the login information and and JOB_HOME (the script is below). When I schedule this job in the cron the log says that it cannot open my list file, which... (4 Replies)
Discussion started by: MadHatter
4 Replies

2. Shell Programming and Scripting

Help with script - run by cron

Hello, I have a shell script that runs every minute to process incoming files delivered externally via SFTP to a directory. Basically the script works and processes the files however I get an error when a new file is delivered into the directory. Please see my script below. A new file is... (2 Replies)
Discussion started by: richo king
2 Replies

3. UNIX for Advanced & Expert Users

Need help with a script run by a cron job.

Hi, new to this forum and not sure if this is the right place to post. I'm new to cron jobs and scripts, and I need some help with a script to be used with a cron job. I already have a bot set up at a certain website address and need a script that the cron job will load every day that tells it to... (1 Reply)
Discussion started by: klawless
1 Replies

4. Shell Programming and Scripting

how to run script? call other script? su to another user? make a cron?

Good morning. I am searching for "how-to"'s for some particular questions: 1. How to write a script in HP-UX 11. 2. How to schedule a script. 3. How to "call" scripts from the original script. 4. How to su to another user from within a script. This is the basics of what the... (15 Replies)
Discussion started by: instant000
15 Replies

5. Shell Programming and Scripting

informix cron did not run for a certain time

currently i have this cron on my informix db 00 00,01,03,06,08,09,10,11,12,13,14,16,18,19,20,21,22,23 * * * . /informix/script.sh it was working until last february22, the last run was 1:00AM. It was suppose to run 3:00, 6:00, so on.. last night we restarted it and for some reason the cron... (2 Replies)
Discussion started by: lhareigh890
2 Replies

6. HP-UX

script in cron didnt run

Hi, I have script in the cron which run at predefined time everyday. If the script fails then we get the mail and a log is created. But last night the script didnt run. If the script is even started it creates log so it seems the script never ran. It has never happened before. Th... (5 Replies)
Discussion started by: shipra_31
5 Replies

7. Shell Programming and Scripting

Need help to run a script on cron

I need someone to help me out to upload script on host but I have problem can anyone help me out ? (2 Replies)
Discussion started by: spit
2 Replies

8. UNIX for Advanced & Expert Users

Script run by cron gives no output

Hi All, I have a script which checks the status of HP Smart Array & then emails me the output. The script run fine when executed manually but I receive no output when configured in a cron job. The script is below: hpacucli ctrl slot=3 show config | mail -s "ARRAY STATUS-`date`"... (6 Replies)
Discussion started by: coolatt
6 Replies

9. Shell Programming and Scripting

Cron job - Need to run Cron every quarter at particular time

Hi, 1) If some job supposed to run on 1st of every month at 7 AM In cron job when we have a blackout on the 1st ( i.e when 1st falls on a sunday ) how can we make the job run the next business day? 2) How can we run a job on 25th of every quarter 7 AM(jan,apr,jul,oct) And if 25th... (5 Replies)
Discussion started by: System Admin 77
5 Replies

10. Shell Programming and Scripting

Run script no more than twice daily WITHOUT cron

Can I run a script no more than twice a day without using cron? Maybe create a file when script is first run and check its date? (7 Replies)
Discussion started by: drew77
7 Replies

LEARN ABOUT CENTOS

yum-cron

yum-cron(8)															       yum-cron(8)

NAME

       yum-cron - an interface to convieniently call yum from cron

SYNOPSIS

       yum-cron [config-file]

DESCRIPTION

       yum-cron  is  an  alternate  interface to yum that is optimised to be convenient to call from cron.  It provides methods to keep repository
       metadata up to date, and to check for, download, and apply updates.  Rather than accepting many different command line arguments, the  dif-
       ferent functions of yum-cron can be accessed through config files.

       config-file  is	used  to optionally specify the path to the configuration file to use.	If it is not given, the default configuration file
       will be used.  It is useful to be able to specify different configuration files for different use cases.  For  example,	one  configuration
       file  might  be set to update the repository metadata, and a line could be added to the crontab to run yum-cron frequently using this file.
       Then, another configuration file might be set to install updates, and yum-cron could be run from cron using this file just once each day.

FILES

       /etc/yum/yum-cron.conf
       /etc/yum/yum-cron-hourly.conf

SEE ALSO

       yum (8)

AUTHORS

       See the Authors file included with this program.

BUGS

       There of course aren't any bugs, but if you find any, you should email
	the mailing list, yum@lists.baseurl.org, or consult bugzilla.

Nick Jacek															       yum-cron(8)
All times are GMT -4. The time now is 08:29 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy