Cron job shell script..

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Cron job shell script..
# 8  
Old 08-07-2009

I have no idea what vixiecron is! All I know is that the cron on my CentOS Linux works like this. If that's vixiecron, then freut mich!

crontab -e
*/90 * * * * date >> /tmp/cron_date.txt
crontab: installing new crontab

If it didn't like it, I'm sure it would have complained. I'll tell you in about 85 minutes Smilie

But Jim Mc. is right. People don't often state their OS when they ask the question.

---------- Post updated at 11:18 PM ---------- Previous update was at 06:51 PM ----------

It didn't complain, and it doesn't work! Es freut mich nicht!

Thu Aug  6 20:03:01 UTC 2009
Thu Aug  6 21:00:01 UTC 2009
Thu Aug  6 22:00:01 UTC 2009
Thu Aug  6 23:00:01 UTC 2009
Fri Aug  7 00:00:01 UTC 2009

And what took it so long?
Thu Aug  6 21:00:01 UTC 2009

So much for that!
# 9  
Old 08-07-2009
cron doesn't care how many times you invoke the same script file. So why not invoke it 16 times at the time you want it to run?

0 0 * * * * /usr/bin/cleanup
30 1 * * * * /usr/bin/cleanup
0 3 * * * * /usr/bin/cleanup
30 22 * * * * /usr/bin/cleanup

Without doing some research, and assuming that the SCO I'm familiar with might work differently, I would suspect that the 90 minute sequence of executing might be determined by the time of the last reboot.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Shell script to set trap for finding cron job failures

Unix box: solaris 5.8 Server: IP Need to to set trap for cron job failures by writing a shell script (5 Replies)
Discussion started by: ChandruBala73
5 Replies

2. Shell Programming and Scripting

Shell script not getting called through cron job but executes fine manually.

Hi, My shell script not getting called through cron job. The same works fine when executed manually. I tried to generate logs to find if the scripts has some errors related to path using following command- trying to execute .sh file every 5 mins: */5 * * * * /home/myfolder/ (17 Replies)
Discussion started by: Dejavu20
17 Replies

3. Shell Programming and Scripting

Cron job and shell script to kill a process if memory gets to high

Hello, I'd like to set a cron job that runs a shell script every 30 minutes or so to restart a java based service if the memory gets above 80%. Any advice on how to do this? Thanks in advance! - Ryan (19 Replies)
Discussion started by: prometheon123
19 Replies

4. UNIX for Dummies Questions & Answers

cron job for the created shell script

Hi am newbie for unix shell.. how to create a cron job for my already created shell script.:confused: Thanks! (1 Reply)
Discussion started by: vidhyaS
1 Replies

5. Solaris

Shell Script gives error when run through cron job.

Hi, The following shell script runs without any problem when executed manulally. USED=$(df -h /arch | tail -1 | awk '{print $5}' | cut -d '%' -f 1) if then find /arch/AUBUAT/ -type f -mtime +0 | xargs rm find /arch/AUBMIG/ -type f -mtime +0 | xargs rm fi But the same gives below... (6 Replies)
Discussion started by: ksadiq79
6 Replies

6. Shell Programming and Scripting

URGENT: cron job not running the sqlplus command in shell script

cron job not running the sqlplus command in shell script but the shell script works fine from command line.. Cronjob: 5 * * * * /home/dreg/ #!/bin/ksh /oracle/u000/app/oracle/product/10204/GEN/bin/sqlplus -s <user>/<pass>@<sid/home/dreg/ ... (18 Replies)
Discussion started by: Ikea
18 Replies

7. Shell Programming and Scripting

cron job - shell code correction

Hi I have a website that is having problem with cron jobs... I have a cron job set up to go to a page with this code... <? include('config.php'); if($_sys->bible_email_frequency == 'DAILY') { $u = new user(); $u->send_bible_email(); } ?> If i send my browser to this page... (2 Replies)
Discussion started by: whybelieve
2 Replies

8. UNIX for Dummies Questions & Answers

shell script run by user or cron job ?

My shell script runs fine both as a cron job and when i issue it. However, I wish to differentiate when it runs as a cron-job so the "echo" statements are not issued (they get mailed to me, which i don't want). I tried checking $USER but since the cron was created in my user that does not... (5 Replies)
Discussion started by: sentinel
5 Replies

9. Shell Programming and Scripting

Backup with shell program and cron job.

Hi, The object of my program is to take automatic backup on daily basis to different folders. I have created the respective folders. when I execute below given shell program manually it is working perfectly and taking the backup to respective folder. #!/bin/sh #script to take backup on... (1 Reply)
Discussion started by: jarkvarma
1 Replies

10. Shell Programming and Scripting

CRON-Job / Shell-Skript deleting special files

Just I'm trying to find script, which will do the following job: 1. as a CRON-Job it shoult a) delete files which will be either older than 24 hours or b) all files within a) a directory deleting recursive b) only a special directory. 2. write an error-/Delete_log... (9 Replies)
Discussion started by: ManfredWL
9 Replies
Login or Register to Ask a Question