Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: cron ? automating a script
Top Forums UNIX for Dummies Questions & Answers cron ? automating a script Post 302152345 by prowla on Wednesday 19th of December 2007 04:25:11 PM
Old 12-19-2007
Here is a cron entry that would probably work:
Code:
0,30 * * * * /mydir/errpt

However, there are some gotchas:
1. You may not have permission to run cron jobs, so cron.allow would need your account name adding. (And easy way to check is to issue the command "crontab -e" and see if it errors or works.)
2. Your script may not work depending upon the scripting language you've used and OS you're running on (ie. Solaris comes with only Bourne shell support in cron).
3. Your script may assume environment variables that work when you run it interactively, but aren't there when it's run via cron.
4. Your OS (bloomin' Solaris again!) may be configured to only allow a limited number of concurrent cron jobs, so other schedules may impact yours.

Have fun!
Last edited by prowla; 12-19-2007 at 05:27 PM.. Reason: amendment
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

automating sftp script

I have to write an automated sftp script which uses password authentication method to access the remote server. I want to pass the password as a parameter or to be included in the script itself, so that when i run the sftp script, it should not prompt me to enter the password. Thanks in advance... (1 Reply)
Discussion started by: Rajeshsu
1 Replies

2. Shell Programming and Scripting

Help in automating dates in ksh script

I need to run a command at the end of a backup job and this command will produce a report of what my backup jobs have collected in the previous day. The real problem is that this binary works with absolute dates only, so I should have to modify the script every single time I need it to work. It... (1 Reply)
Discussion started by: italia1971luca
1 Replies

3. Shell Programming and Scripting

Automating Interactive script

I have a script that will install software on all remote host. At the end of the script it starts the install.sh part and goes into a interactive mode asking Yes or No questions and prompting to add a username and password. My question is how can I script this so that these questions are... (7 Replies)
Discussion started by: soupbone38
7 Replies

4. Shell Programming and Scripting

Automating A Perl Script over a database

Dear Scripting Gods I've never done shell scripting before and have only recently got to grips with Perl, so apologies for my naivity. I've written a perl program which takes in two files as arguments (these are text documents which take in the information I need) The perl program spits out a... (1 Reply)
Discussion started by: fraizerangus
1 Replies

5. UNIX for Dummies Questions & Answers

Problem automating sFTP transfer using script in cron

Hi Newbie here I am having problems with automating sFTP transfers. Just to save time - SCP is not an option as sFTP is stipulated by controllers of far end server. Ineed to automate sFTP transfer of a single file, once a day to a remote server to which i have no control over. I am using:... (6 Replies)
Discussion started by: robbien
6 Replies

6. Shell Programming and Scripting

Help with automating a bash script

Hi Guys, There are some emails going deferred as we got some new IP's from our ISP. So I was trying to manually copy the deferred mail and forward it to our sales team so that they can contact our client. I am new to this script thing, but luckily I was able to write the code to extract the data... (1 Reply)
Discussion started by: linuxrulz
1 Replies

7. Shell Programming and Scripting

automating a perl script

Hi, I have a perl script that takes in 2 numerical values as ARGV. perl script.pl parameter1 num1 num2 in my case I have 1000's of num1 and num2. I can have them in separate files. Please let me know how to automate this run using shell scripting or using awk, so that I don't have to... (4 Replies)
Discussion started by: Lucky Ali
4 Replies

8. Shell Programming and Scripting

Automating Crontab through script??

is it possible to automate crontab through script... I ll be getting the data i.e. cron entries from DB. (5 Replies)
Discussion started by: nikhil jain
5 Replies

9. Shell Programming and Scripting

Automating Linux Script

I want to automate the creation or processing of the following: Directory and subdirectory creation for your scenario company Files in each of the directories Symbolic links from 2 subdirectories to their parent directories Setting appropriate file permissions for the directories and... (1 Reply)
Discussion started by: ekglag2
1 Replies

10. Homework & Coursework Questions

Automating Linux Script

1. The problem statement, all variables and given/known data: I want to automate the creation or processing of the following: Directory and subdirectory creation for your scenario company Files in each of the directories Symbolic links from 2 subdirectories to their parent directories... (16 Replies)
Discussion started by: ekglag2
16 Replies

LEARN ABOUT DEBIAN

queuedefs

queuedefs(4)							   File Formats 						      queuedefs(4)

NAME

       queuedefs - queue description file for at, batch, and cron

SYNOPSIS

       /etc/cron.d/queuedefs

DESCRIPTION

       The queuedefs file describes the characteristics of the queues managed by cron(1M). Each non-comment line in this file describes one queue.
       The format of the lines are as follows:

	      q.[njobj][nicen][nwaitw]

       The fields in this line are:

       q	The name of the queue. a is the default queue for jobs started by at(1); b is the default queue for jobs  started  by  batch  (see
		at(1)); c is the default queue for jobs run from a crontab(1) file.

       njob	The  maximum  number of jobs that can be run simultaneously in that queue; if more than njob jobs are ready to run, only the first
		njob jobs will be run, and the others will be run as jobs that are currently running terminate.  The default value is  100.

       nice	The nice(1) value to give to all jobs in that queue that are not run with a user ID of super-user.  The default value is 2.

       nwait	The number of seconds to wait before rescheduling a job that was deferred because more than njob jobs were running in  that  job's
		queue, or because the system-wide limit of jobs executing has been reached.  The default value is 60.

       Lines beginning with # are comments, and are ignored.

EXAMPLES

       Example 1: A sample file.

       #
       #
       a.4j1n
       b.2j2n90w

       This  file  specifies that the a queue, for at jobs, can have up to 4 jobs running simultaneously; those jobs will be run with a nice value
       of 1.  As no nwait value was given, if a job cannot be run because too many other jobs are running cron will wait 60 seconds before  trying
       again to run it.

       The  b  queue, for batch(1) jobs, can have up to 2 jobs running simultaneously; those jobs will be run with a nice(1) value of 2.  If a job
       cannot be run because too many other jobs are running, cron(1M) will wait 90 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, and if a job cannot be run because too many other jobs
       are running cron will wait 60 seconds before trying again to run it.

FILES

       /etc/cron.d/queuedefs	       queue description file for  at, batch, and  cron.

SEE ALSO

       at(1), crontab(1), nice(1), cron(1M)

SunOS 5.10							    1 Mar 1994							      queuedefs(4)
All times are GMT -4. The time now is 03:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy