Comments on: HowTo: Add Jobs To cron Under Linux or UNIX?

By: avishay

avishay — Sun, 22 Jan 2012 08:34:26 +0000

I added a cron job but it doesn’t work. crontab -l shows my script * * * * * /tmp/some_script

pgrep cron shows 1471.
thanks

By: avinash

avinash — Sun, 22 Jan 2012 02:30:55 +0000

how to create a folder daily using cron job

By: Muhammad Hammad Qadir

Muhammad Hammad Qadir — Fri, 20 Jan 2012 08:05:41 +0000

Hi every on, I newbie too i want to get a buckup of a folder the file is saved in that folder, I want to know how i can compress that folder like tar and then that compresssed tar file stored on a sperate location by crontab and should done in a 1 day of the week.

Your comments will be appriciated.

By: reena

reena — Fri, 20 Jan 2012 06:22:54 +0000

Hi i want to diplay a “Hiiiiii ” in evry minute by crontab.
So how to do that ? Please give me solution.
Its urgent as i hv no idea at all about cronjob

By: Bobby

Bobby — Wed, 18 Jan 2012 15:01:27 +0000

I am trying to set up a cron job to create a daily mysql back up. I installed the job as follows:
crontab -e
05 10 * * * /usr/bin/mysqldump –all-databases -u root -p`*password` | gzip -c > /home/db_backup/database_`date +%a`.sql.gz
saved and closed the file
restarted cron daemon
The job will not run.

I verified the command works when run manually, but I am new to using cron. Any ideas?

By: vawani

vawani — Thu, 08 Dec 2011 21:33:02 +0000

*/5 00-13 * * *

By: thiyagi

thiyagi — Thu, 01 Dec 2011 06:52:51 +0000

thanks, was useful..

By: Rubli

Rubli — Fri, 18 Nov 2011 10:27:00 +0000

Hi,

I have a weblgic server in solaries.I want to take the backup of the log files of my server after a particular period.How can i do that by using cron.

By: chiks

chiks — Tue, 08 Nov 2011 16:01:10 +0000

david u know cron job wakes up each and every minute….so u can’t
write a cron script which is supposed to run each and every second.
for that u have to write a script and another one u can schedule a particular job
like 7:30:45.
for dis u have to write a script at 7:30 first.give this script name to a.sh.then….
in unix there s a concept called wrapper script in which u will include the “sleep”
command
write another script called b.sh
in there write
sleep 44 a.sh
then execute it. it will run at 7:30:45

By: chiks

chiks — Tue, 08 Nov 2011 15:49:44 +0000

urs is right…………but if u r a unix professional then u should follow mine

and (this is d best way to schedule in every 15 min)

*/15 * * * * /path/to/script.php

By: Paul Smith

Paul Smith — Sun, 23 Oct 2011 03:09:27 +0000

Finally a blog with some insight into cron jobs. I have a question about the email issues. I have a dedicated server (just learning how to manage) for my websites and host a few of my friends sites on it also. One of them has a cron job set using cPanel and it reads:
curl -A “Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6″ -s http://www.hissite.com/billing/coin_cron/invoices.php

However the emails get sent to my server address and not his domain address. I went into /etc/crontabs but if I change it to his address then all future cronjobs that I wanted to create would go there also, correct? Not what I want. How do I change it so he and any future clients emails will be sent to their domain? Sorry if this is confusing as I am just learning. Thanks in advance.
Paul

By: Dhruv Patel

Dhruv Patel — Thu, 13 Oct 2011 07:28:26 +0000

For every minute use * * * * * /etc/opensips/monitor_server1.sh

By: anshumantrivedi

anshumantrivedi — Wed, 05 Oct 2011 06:44:01 +0000

0,15,30,45,60 * * * * /path/to/script.php

you can try this……….

By: Pete

Pete — Tue, 27 Sep 2011 22:26:44 +0000

Awesome article. Love your site, I always get excited to see this.

I *think* there might be a typo for sending emails to a custom address:
MAILTO=”vivek@nixcraft.in”
0 3 * * * /root/backup.sh >/dev/null 2>&1 (“2>&1″ seems to disable email).

I’m not 100% sure on that, but I couldn’t get emails delivered until I removed 2>&1.

By: Anup

Anup — Thu, 15 Sep 2011 17:34:19 +0000

Hi,

I’m using VPS with cpx control panel in FREEBSD platform and have root access also thru UNIX command. I need to create a Cron Job schedule for user x to clear his inbox and Junk mail box every day by 3.00 am. How to do it. Also want to create a job for SENDMAIL to restart everyday by 3.15 am. Pls help

Anup

By: MrCompTech

MrCompTech — Thu, 08 Sep 2011 16:03:08 +0000

@ Ashish
I haven’t tested this but I think this is what you want:
0 22 1-7 3,6,9,12 6
This should run at 22:00 (0 22) but only if it one of the first seven (1-7) days of months Mar, Jun, Sept, Dec (3,6,9,12) and then only if it is a Saturday (6).

By: Ashish

Ashish — Wed, 07 Sep 2011 08:17:15 +0000

Hi,
I would like to schedule a crontab entry for a SAP script which should run quarterly, after every three month on Saturday (any weekend) but just one Saturday of the month.

I thought of below entry to be added:

0 22 * 3,6,9,12 6

I doubt bcoz of *, this will run on every Saturday of third month, where as I want to run it just one Saturday of the third month.

Could you please help me to create an entry which fulfil above criteria.
Thanks

By: Jimmy

Jimmy — Thu, 25 Aug 2011 10:28:06 +0000

Old thread, but found this by misstake :)

Think you need to put:
0,15,30,45 * * * * /path/to/script.php

if you want it to execute every 15 minutes.

By: MrCompTech

MrCompTech — Fri, 05 Aug 2011 16:47:15 +0000

You welcome and if you or anyone has any computer/Internet/technology question I would be happy to answer them at http://mrcomptech.com/index.php/ask-a-technology-question

By: Lexyz

Lexyz — Fri, 05 Aug 2011 16:42:47 +0000

Thanks for the help.

I will check this out.

Great!