Solved

How to use Cron command

Posted on 1997-12-01
5
270 Views
Last Modified: 2013-12-26
I have to automate the execution of a program into
my server and I would like to know how to use
the Cron command in order to do this from a web site
directory (I have I vortual server hosted on a Sun
station working with OS Sun solaris 2.5
0
Comment
Question by:italnet
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 

Author Comment

by:italnet
ID: 1295705
Edited text of question
0
 

Accepted Solution

by:
xilef earned 20 total points
ID: 1295706
Use the command "crontab -e" to edit your cronfile (the file which contains the commands to execute at given times). The cronfile then consists of as many lines as you want with the following format:
m h dm m dw command
Where
 m = minute
 h = hour
 dm = day of the month
 m = month
 dw = day of the week
 command = the command you want to execute
Now, replace the characters above with values when you want your command to be executed. If you want to execute something every hour, write:
0 * * * * /path/to/my/command
If you want to execute something every 15 minutes, write:
0,15,30,45 * * * * mycommand

For more information, see the man page of the crontab-command.

0
 
LVL 2

Expert Comment

by:gormenghast
ID: 1295707
Hi...

Before you use crontab -e you may want to set your default editor to whatever you want to use...for example:

# EDITOR=vi
# export EDITOR

Also dont put any blank lines in the crontab file ## comments are ok.


0
 

Author Comment

by:italnet
ID: 1295708
Hi,
Crontab does not respond to my query.
I followed all directions both  from you and
from other infos I found online....No results.
Where the mistake is?
1) I created following file txt
    0,15,30,45 * * * * /to/my/dir/file
2) [telnet] crontab filename.txt   (OK)
3) [telnet] crontab -l  (OK I listed the file)
4) [telnet] crontab run (and I receive an e-mail
    which inform on job execution but....
    he was unable to locate .cfg file
    (it is the config file of the program which
     I want to be execute. This is a strange story
     as this config file is in the same dir of  the
     program file and when I run it directly
     on telnet all works fine!)
Do you have suggestions?

0
 

Expert Comment

by:xilef
ID: 1295709
You should probably first "cd" to this directory. Make a small script which contains "cd /path/to/your/progrm/; ./program".

This way, everything should work.

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Folder Comparison 12 56
Expand data scrubbing tool 13 36
EvenOdd challenge 10 160
Not needed 13 134
Introduction: Dynamic window placements and drawing on a form, simple usage of windows registry as a storage place for information. Continuing from the first article about sudoku.  There we have designed the application and put a lot of user int…
Introduction: Database storage, where is the exe actually on the disc? Playing a game selected randomly (how to generate random numbers).  Error trapping with try..catch to help the code run even if something goes wrong. Continuing from the seve…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…
Suggested Courses

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question