[Tip] How to add an application cron job?


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users [Tip] How to add an application cron job?
# 1  
Old 11-05-2013
[Tip] How to add an application cron job?

A well established form of application cron jobs look like this:
Code:
39 15 * * * [ -x /usr/local/monitoring/oracle/check_dbs.sh ] && /usr/local/monitoring/oracle/check_dbs.sh >/dev/null 2>&1

The repetition makes it a long line, hard to read, hard to maintain.
I suggest the following instead:
Code:
39 15 * * * { /usr/local/monitoring/oracle/check_dbs.sh ; } >/dev/null 2>&1

Should work even with the oldest Bourne shells.
Don't miss the semicolon between the command and the closing brace! The shell syntax requires it. Also the braces must be separated with a space character.
These 4 Users Gave Thanks to MadeInGermany For This Post:
# 2  
Old 11-05-2013
Very good tip. Thank you.

I have added "[Tip]" in the title to make it easier to find it.

bakunin
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Tip: inotify cron

Dear members, moderators and others. While working on <insert project>, a need has surfaced to watch a directory, and when a file comes, to do appropriate action. So, i started writing some shell code, aware of linux inotify-tools package with inotifywait. Also, i'm seeing a lot of similar... (1 Reply)
Discussion started by: Peasant
1 Replies

2. UNIX for Beginners Questions & Answers

Add TimeStamp to cron job and write file name sent

Hello, I have written a cron job to automate the sftp of files using key authentication. I wanted to add a timeStamp and name of file sent to a log file and append each these details to the same file each time files are sent and if possible include whether the files were sent successfully or not.... (3 Replies)
Discussion started by: KidKoder
3 Replies

3. 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

4. UNIX for Advanced & Expert Users

[Tip] How to add individual delays to a cron job?

ofIn a big Unix environment you likely install cron jobs like this on a thousand systems: 39 15 * * * { /usr/local/monitoring/sendstats ; } >/dev/null 2>&1If all the system clocks are synchronized (usually via NTP), these jobs run *exactly* at the same time. If the cron job accesses a shared... (2 Replies)
Discussion started by: MadeInGermany
2 Replies

5. Shell Programming and Scripting

Commented cron job -- cron monitoring

Hi I have a requirement to write a shell script,that will check the all commented job in cron job.Please help !! (2 Replies)
Discussion started by: netdbaind
2 Replies

6. Solaris

Cron job running even after cron is removed

Hi , I have removed a cron for particular user , but cron job seems to be running even after the cron entry is removed. The purpose of the cron was to sendmail to user ( it uses mailx utility ) I have restarted cron and sendmail service still user is getting mail alerts from the cron job. And... (4 Replies)
Discussion started by: chidori
4 Replies

7. Shell Programming and Scripting

How to add cron job in /etc/crontab

Hi, How to add a cron job in /etc/crontab using a shell script.??:confused: Actually the requirement is we need to run a script say, XXX.sh every 10 min through “cron”. That can be achieved by adding the below code line in the /etc/crontab , (i.e., “crontab -e ” command to add this to the... (4 Replies)
Discussion started by: Dedeepthi
4 Replies

8. Solaris

cron job starts new cron proccess

I run cron in solaris 10 zone. One cron job which syncing files to nfs mounted on container, creates after finishing another cron proccess(/usr/sbin/cron), and after 100 existing cron proccesses next cron job will not start. It's too weird for me, I'm not able to solve this problem. Theoretically... (3 Replies)
Discussion started by: ron76
3 Replies

9. UNIX for Dummies Questions & Answers

Graph application tip request

Hi, as a Mac OS X user I am not into Unix at all. But since it is possible to run Unix application on Mac I am specialy interested in a program making scientifical graphs. There is SigmaPlot for WIN PC´s and this is more or less what I would like to use. So, here comes the question: is there a... (3 Replies)
Discussion started by: zwen
3 Replies
Login or Register to Ask a Question