12-27-2008
Hi Danmero,
Well i will put my script in #do something here.. Then I will run your script manually and will it be running contineously??
while :
do
# do something here
sleep 60
done
Another thing... do you think is there any possiblity of facing problem if i run the script in crontab by 1 minute interval? why short interval is not recommended in crontab?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All.
I have a script which has to be run periodically. The frequency of its run will be decided by a Database stored value PollRate.
e.g. If PollRate value is 300secs, then the script should be executed every 5 minutes, if it's 1500secs, it should execute every 15 minutes.
Is there... (5 Replies)
Discussion started by: rahulrathod
5 Replies
2. Shell Programming and Scripting
Hi ,
I am working on the following script . I want this script to run and scan the log file repeatedly after 3 hours. This script will run & scan just for the current date logs and after every 3 hours. Kindly advice what to add in this script for this purpose.
#!/bin/sh
diff common.log... (3 Replies)
Discussion started by: himvat
3 Replies
3. UNIX for Dummies Questions & Answers
I have a script I want to run in the background, and I have looked it up but I am not exactly sure how to do. First of all to run it in the background do you have to put something in the script or is it just a command when you go to run it. I found this solution to it but once again I am not to... (2 Replies)
Discussion started by: mauler123
2 Replies
4. AIX
In my cronjob, I would like to schedule my script.sh to run every minutes. I crontab -e and have in line below but it didn't seems to run at all.
* * * * * script.sh
When I run it manually, I can run it. Is that anything wrong with the above line?
If I change it to something like below,... (4 Replies)
Discussion started by: ngaisteve1
4 Replies
5. UNIX for Dummies Questions & Answers
Hi can any one help me out.
while running crontab , m getting error bad minute time..
how to resolve this error.
i created 1 txt file a.cron
mirrordir -vm \home\t \homet1
& i saved it.
then i created a crontab file ..with
crontab -e
& i added a line in it.
* 1 * * * \root\a.cron
& i save... (2 Replies)
Discussion started by: unxdost114
2 Replies
6. Shell Programming and Scripting
Hi,
Can someone help me in running a cronjob everyday between 7 and 8 pm with the time interval of 5 minutes in between to repeat that script. The script is so small and I need that to run daily between this time. Please if possible provide me the syntax for this logic.
Thanks. (4 Replies)
Discussion started by: cya
4 Replies
7. Shell Programming and Scripting
Hi Friends,
I am newbie to shell programming and I am stuck trying to accomplish following task.We use Bamboo CI which executes script1 passing parameters. This Main script executes script2 as backend process as part of one of it statements. Task of script2 is to essentially check whether a... (0 Replies)
Discussion started by: aditya206
0 Replies
8. Shell Programming and Scripting
Hello all,
I'm trying to write a script to gather and send data and it works just fine at the bash command line, but when executing from CRON, it does not run properly.
My scripting skills are pretty limited and there's probably a better way, but as I said it works at the command line, but... (12 Replies)
Discussion started by: rusman
12 Replies
9. Shell Programming and Scripting
when it runs and look at my acron.log file it generates an error as below
/tmp/prog.sh: line 4: (12 Replies)
Discussion started by: azherkn3
12 Replies
10. Shell Programming and Scripting
Hi...
I am very new to shell scripting. I have written a script with help of this forum and some googling and it works the way I want it to. Currently this script checks for my SIP trunk registration every 5 seconds, if registration is not available then it reboots my router through telnet... (4 Replies)
Discussion started by: jeetz
4 Replies
LEARN ABOUT CENTOS
crontabs
CRONTABS(4) Crontabs users' Manual CRONTABS(4)
NAME
crontabs - configuration and scripts for running periodical jobs
SYNOPSIS
run-parts [--list|--test]<directory>
DESCRIPTION
Crontabs is a historical name for the run-parts script and the system crontab. The run-parts script runs all executables in the specified
directory. Run-parts runs all executables in the specified directory. The execution of files can be allowed or denied by creating file
jobs.allow or jobs.deny which worked similar as other allow/deny config files. The file must be created in the specified directory.
--list print names of all files (not limited to executables), but don't run them. This option can't be used with test option.
--test print names of files, which would be run.
Randomization of jobs can be configured in the /etc/sysconfig/run-parts file. To enable randomization of jobs, set the RANDOMIZE
parameter to 1 and set the RANDOM parameter to an integer which determines a random seed. Additionally, you may configure the RAN-
DOMTIME parameter (again, by specifying an integer) to provide an additional level of randomization. Jobs are not randomized when
the RANDOM and RANDOMTIME parameters are set to 0. Values in these two parameters must be set to 1 or larger to provide a good
enough randomization.
Randomization of cron jobs can be useful for shared networks, where multiple cron jobs executed at once can cause spikes in traffic,
especially during daily jobs. With randomized jobs, the workload is evenly distributed throughout the day.
EXAMPLE OF CONFIGURATION FILE
RANDOMIZE=1
RANDOM=4
RANDOMTIME=8
Historically the crontab file contained configuration which called run-parts on files in cron.{daily,weekly,monthly} directories. These
jobs are now run indirectly through anacron to prevent conflicts between cron and anacron. That means the anacron package has to be
installed if the jobs in these directories should be running. Refer to the anacron(8) how to limit the time of day of the job execution.
EXAMPLE
/etc/cron.daily/jobs.deny could contain for example 0logwatch which forbid execution of this script.
SEE ALSO
anacron(8), crontab(5)
Marcela Malaova 2012-08-29 CRONTABS(4)