Run a cron job every minute

Hi,
I would like to run a cron job every minute.
I can find cron.hourly, cron.daily, cron.weekly, cron.monthly in my /etc, but no cron.minutly.
Can I get it? What should I do?
Thanks!
Nathan

run
crontab -e
. this opens an editor. therein you type :
#min hour day month weekday command
*/1 * * * * <your command>
dw was faster
Last edited by DonVla (2008-11-17 16:56:42)

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Cron job ,every other monday

hello
i would like to schedule a cron job every other monday
-- OS info
[oracle@dev3 ~]$ uname -a
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# Bi-weekly report
30 11 * * 1 /u01/scripts/monday_query.sh > /u01/scripts/monday_query.log 2>&1here is what we have in monday_query.sh
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# set -xv
. dbbash_profile
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Please help

From the cron man page: http://unixhelp.ed.ac.uk/CGI/man-cgi?crontab+5
"Step values can be used in conjunction with ranges. Following a range
with ``/<number>'' specifies skips of the number's value through the
range. For example, ``0-23/2'' can be used in the hours field to spec-
ify command execution every other hour (the alternative in the V7 stan-
dard is ``0,2,4,6,8,10,12,14,16,18,20,22''). Steps are also permitted
after an asterisk, so if you want to say ``every two hours'', just use
``*/2''."
Or, create a flag file with 'touch ran_cron_job_last_monday' after a Monday that you ran the script.
Then throw a condition into your script to check for the file. If the file exists, remove it. If the file doesn't exist, then run your script and when finished, create the file again.
For example:
#! /bin/ksh
if [ -e ran_cron_job_last_monday ] ; then
rm -f ran_cron_job_last_monday
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touch ran_cron_job_last_monday
exit 0
fi
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exit 0

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Run this command :
crontab -l
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Hi All,
We have Solution Manager 7.1 in our landscape and we have configured RCA, Monitoring.. Is it possible to Monitor the scripts running as Cron Job at the OS level?
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Hi,
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sapevt TRIGGER_NAME -t
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[Steps to configure RCA and Monitoring in SolMan;
[http://help.sap.com/saphelp_45b/helpdata/en/c4/3a7ef8505211d189550000e829fbbd/content.htm]
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DBA scripts run by cron job

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We've got a development database on which we're working every day. We intend to set up a cron job to run about once a week to help in the maintainance & performance of the database.... analyzing tables, stuff like that. Does anybody have any suggestions as to what scripts it's useful to run to help keep things running smoothly?
We're using 9.0.1
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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 [ ${USED} -gt 90 ]
then
find /arch/AUBUAT/ -type f -mtime +0 | xargs rm
find /arch/AUBMIG/ -type f -mtime +0 | xargs rm
fi
But the same gives below error when called from a cron job:
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bash-3.00$ uname -a
SunOS uaeaubdbdr01.aub.af 5.10 Generic_141444-09 sun4u sparc SUNW,SPARC-Enterprise
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Thanks
Edited by: user13362786 on Apr 20, 2011 4:36 AM

Hi,
When I used #!/usr/bin/sh now even the manul execution of the script fails with the same err:
bash-3.00$ ./arch_test.sh
./arch_test.sh: syntax error at line 2: `USED=$' unexpected
And when I used #!/usr/bin/ksh the manual execution runs fine but again when the script is run from cronjob it now give dirrect err:
/backup/arch_test.sh[2]: df: not found
/backup/arch_test.sh[2]: tail: not found
/backup/arch_test.sh[2]: cut: not found
/backup/arch_test.sh[2]: awk: not found
/backup/arch_test.sh[3]: test: argument expected

Cron job every 4th Saturday

I have a 'ditto' command that I'd like to run every 4th Saturday.
Can anyone advise how I should set crontab?

In short, you can't do this in one step.
You might think you can do something like
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This wrapper script could be as simple as:
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Program that run a cron job in EP?

Hi All,
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I am having problems running a cron job every one minute that calls a PHP script. Please see below:
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Thank you in advance.

I guess it would :)
btw, how did this piece miss from the contents pasted by the OP ?
The doc has given all details of CRON and missed where to see the logfiles. :)
****Added****
I tried man crontab in windows, i dont see it.i overlook most of the things, i would have done the same ;)
Edited by: Bobcatalog on Oct 23, 2008 9:40 AM

Reg Cron Jobs

hi,
I need to run a cron job every alternate wednesdays...in a year
Any suggestions????
Thnx,
Enz

Method 1: Run a cron job every wednesday. Run your job if `date +%U` is even.
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Method 2: Run a cron job every wednesday. Set a file as a sentinel. If clear, set it and run your job. If set, clear it and dont' run the job.
problems: If the cron job fails to run, your "alternate week" might get out of sync. Someone might screw up the sentinel file.
Pick one based on your needs
Darren

I need to run the job every 8th of the month

Hello,
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Can we run ICM Admin script every mimute ?

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I have a requirement to run one Admin script every minute , does it make any overload to central controller ? . Anyone is using the same in production system?
Regards
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I concur, I have a customer with many admin scripts checking time of day every minute for different locations and this is extremely busy contact center and we have never seen any related performace issues.
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Pacman -Syu as a CRON job?

OK, ... before the flames errupt ... I'm not managing any mission-critical systems.
My interest in 'pacman -Syu' as a CRON job is for personal and friend's systems. I'm wondering if you could post your cron scripts as an example for me to learn from. How to you prefer to set your pacman.conf for this sort of thing?
I'm mostly interested in the security benefits and new-features of using new/current packages by this automation.
Thanx.

I higly suggest you to do not run pacman as cronjob, but anyway there is nothing particular to do.
At first ensure you have crond configured and running.
Then just go into /etc/
there are some directory with cron.[something]
chose with which frequency youw ant to run the cron job
then just create a file in the appropriate directory
For pacman it shoul look like
#!/bin/sh
pacman -Syu
I suggest you to use the
IgnorePkg = <package> [package]
in pacman config file in wich you specify wich package MUST NOT be update, for instance lilo.
Consider that and indiscriminate automatic updating can potentially leed to an unsuable system.

Cron job help- Need to run the Autobuddy command every night...

I have not written anything in the form of a Unix script for YEARS and YEARS. Our XServe was built in Advanced mode, currently running 10.5.4 Server. On this box, we are running Wiki and iChat. Since we built this box as an Advanced box the "Autobuddy" option was not available.
I have since enabled it at the command line, but I am told by Apple that there still needs to be a command run after every time a user logs in if you want others to Autobuddy. That command is this:
"sudo /usr/bin/jabber_autobuddy -m"
Now I think this would be pretty easy to setup as an automatic cron script, but like I said, I have not written something like this in forever. Not to mention, I am not 100% sure what needs to happen since running the script with an sudo command will prompt for the root password.
I was wondering if anyone would be able to help me write the script up, and give me some instructions on how to install it. I just want it run everyday, midnight is fine, I don't really care. All I know is that we have a dept of 150 people, and it grows and shrinks all the time. They can deal with a new user not being seen for 24-48 hours, I just want to get this automated.
Any helps would be GREATLY appreciated!
Thanks
Tom

If you want to keep it simple try [CronniX|http://www.abstracture.de/projects-en/cronnix] a graphical tool for setting up CRON jobs on OSX. Whilst I have not actually done an autobuuddy in this way, I cannot see any reason why it will not run as a Cron Job.
The proper way ideally would be to use the launchd service.
Something like this should work:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>org.jabber.dailyautobuddy</string>
<key>ProgramArguments</key>
<array>
<string>/usr/bin/jabber_autobuddy</string>
<string>-m</string>
</array>
<key>LowPriorityIO</key>
<true/>
<key><UserName></key>
<string>admin</string>
<key>StartCalendarInterval</key>
<dict>
<key>Hour</key>
<integer>0</integer>
<key>Minute</key>
<integer>05</integer>
</dict>
</dict>
</plist>
(not sure why, but tabs are not showing up, making this hard to read)
Message was edited by: Tim Harris

[SOLVED] Cron Job that starts every 30 minutes from boot

I wish to have a cron job that runs a script every 30 minutes from boot, without any users logging in.
I know about crontab -e, but I think that would I only run once i'm logged in. I've also heard about @reboot, but that would only run the script once.
RabbidRabbit
Last edited by rabbidrabbit (2012-01-31 20:14:13)

Cron jobs will run whenever the system is up, regardless of whether or not anyone is logged in.
I don't remember the syntax, but I know that at least some cron implementations have a way to run a job every 30 minutes, starting for the first time 30 minutes after reboot.
EDIT: I just checked the syntax for fcron, which is what I use, and it seems like doing @ 30 your/command/here will make it run every 30 minutes of uptime.
Last edited by kyla (2012-01-31 00:17:30)

Run a cron job every minute

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