Crontab is a short form of cron table. It is a configuration file that specifies shell commands to run periodically on a given schedule.

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Load login shell inside user cronjob

I'm trying to run a rake task using a scheduled cronjob. My crontab looks something like this: 0 1 * * 1-7 /bin/bash -l -c "cd ~/jobs/rake && rake reports:create >> ...
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403 views

Cron job for moving directories older than 24 hours

Well, what I want to do is The cron should run every hour or so It should move the directories in a folder /disk1/data/ older than 24 hours to /disk2/data/ The directories moved should contain all ...
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726 views

Mac OSX 10.6 Cron Job Not Running

I tried setting up a crontab on my Mac, but it's not running for some reason. Here's what I'm trying to run: */2 * * * * /BackupScript/backup.sh I have it set to every 2 minutes currently for ...
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444 views

Why cron saves at /root, when should at /var/www?

Why my cron */1 * * * * /usr/bin/php /var/www/query/query.php &> /root/querylog.log saves query.php output in the /root/ folder? (this script shall save *.txt at its location) It should do so ...
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1answer
863 views

sudo access to view/edit a crontab

I wish to be able to edit, or at least view, a crontab that is on a server. Should I not be able to run this to do so: sudo crontab -u root When I do, I get this error: Sorry, user crmpicco is ...
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Issue pushing file from linux to windows with smbclient

I have a file located on my linux box that is generated by a python script, the file is dropped inside of the /root/ directory My bash script looks like so: #!/bin/bash # Run the HR Data feed cd ...
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1answer
919 views

How do I make cron run a Java GUI application?

I have a script which runs a Java GUI application using "java -jar app.jar". I have added the script to the crontab to run every minute, check the processlist if the application is up. If it isn't it ...
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928 views

Why does cron task run twice?

I have a task that should run each day in Ubuntu10.04. So I use crontab and copy the scripts of the task to the directory /etc/cron.daily. Here is the my crontab: # /etc/crontab: system-wide crontab ...
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Crontab script on Mac OS X Lion does not work anymore

I have a problem with cron tasks. Previously this script worked fine on Mac OS X 10.6 server, but when I initialize it on Lion (client), this script stopped working. Basically, this .bat file calls ...
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312 views

What happens if cron.daily is not terminating

Today I had to realize that some cron jobs werent run on my server! In the log files I find this: Mar 13 03:30:01 osp-server anacron[7261]: Anacron 2.3 started on 2012-03-13 Mar 13 03:30:01 ...
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cron jobs made in cPanel don't show up in PuTTy

Why don't cron jobs, that I have made in cPanel, show up when I use PuTTy and type crontab -l?
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What do slashes “/” mean in crontab?

I'm seeing slashes in some crontab examples, I don't understand what they mean? Check this one out for example */10 * * * * /home/ramesh/check-disk-space ...
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5answers
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How to use crontab to run a script as nobody

This is on a CentOS machine. I'm trying to run a script as user nobody (or as a user with minimal permissions) at a certain time every day. Here is nobody: [root@CentOS % ~] grep "^nobody" ...
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2answers
1k views

How to recover crontab jobs from filesystem

On my system I have fedora 13, which I can't get to boot right now. I'm now running ubuntu 11.10 from a different partition. From ubuntu I can read the fedora partition. In fedora I had some cron ...
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1answer
65 views

I can not find specific cron running at *:21 and *:56 on Debian

I am frustrated. I have two mystic crons running on our server, that I can not find by doing crontab -l. The good thing is these crons are sending mails. That is how I know those are running at :21m ...
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2answers
1k views

Cron job not working consistently

I have a cron job: 1 0 * * * /usr/bin/wget -q -O /dev/null 'http://123.456.78.90/index/parsedata?&today=1' It should gather a bunch of data from the DB at 12:01am each day, organize it for use ...
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519 views

How to setup crontab on dedicated server to dump WordPress MySQL database and email it to a Gmail account

I know I can do a mysql dump for my WordPress databases on my dedicated server. But I want to do this automatically, and I want the dump to be emailed to my Gmail account. Is this even possible?
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2answers
780 views

Do jobs in root's crontab still execute when logged in as another user?

I have edited my root's crontab. Will root's cron jobs still run when I'm logged in as another user?
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4answers
3k views

mysqldump cron not dumping

I am attempting to setup a cron to use mysqldump once a day. There is no output and I cannot see any database usage while watching top. The crontab is: mysqldump [database] -u[user] -p'[password]' ...
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1answer
215 views

crontab -l output to file

I want to be able to output my current crontab to a file, in order to check and append it automatically. crontab -l > somefile creates an empty file. There must be a simple way of doing this, ...
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1answer
15k views

Running program every 2 minutes with crontab

What does 2 * * * * means in crontab context? I want to run my program every 2 minutes; is that what 2 * * * * means?
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Open a terminal from a Crontab

How do I get a gnome-terminal window to open from a crontab? I have tried this: * * * * * /usr/bin/gnome-terminal * * * * * source /home/user_name/.bashrc ; /usr/bin/gnome-terminal * ...
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1answer
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crontab day of week vs. day of month?

I added this to /etc/crontab on a few different linux & freebsd systems: # monthly reboot: 3rd Tuesday of every month 56 07 15-21 * 2 root /sbin/shutdown -r now I want a reboot on the 3rd ...
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1answer
7k views

Bad minute in crontab?

I get the following error in my syslog: Oct 17 13:14:03 tracker cron[873]: (*system*) ERROR (Syntax error, this crontab file will be ignored) Oct 17 13:14:03 tracker cron[873]: Error: bad minute; ...
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112 views

Cron jobs and clipboards

Pbpaste doesn't seem to work as expected when I run it from a cron job. I have an applescript that opens a PDF file in Preview and sends it the copy command and then closes Preview. Next I'd like to ...
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1answer
106 views

If I restart crond, will scripts get interrupted?

I am changing my /etc/crontab file. When I execute service crond restart will my jobs/scripts that just begun executing by crond be terminated or not ?
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Run a shell script using cron

I have this FeedIndexer.sh: #!/bin/sh java -jar FeedIndexer.jar Just to run FeedIndexer.jar which is in the same directory as the .sh, I would like to run it using crontab, so I did this: # ...
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2answers
2k views

How to set CRON to execute a php file outside of a public html folder?

I have a php file located at, let's say, for example: /data/web/process.php This file is not publicly available (no virtual host is running in that folder, but apache is installed). I need to ...
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1answer
276 views

View the event list of a cron file

I have a relatively complex set of cron jobs running and it would be really useful for me to ask the system for the list of the next n cron tasks that will be performed. So given a particular ...
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2answers
903 views

Crontab : Permission denied

My crontab (running as user) contains the following command 00-59 00-23 * * * /usr/bin/smbget -R smb://192.168.10.32/Data -u USER -p PASSWORD But I am getting an error as You don't have ...
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4answers
824 views

How do I add a job to cron?

So, here's what I did: Logged in as root via Shell Typed crontab -e Typed */30 * * * * /path_to_website/cronjobs/cron.php And now what? How do I save it? I just closed Putty and then logged back ...
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1answer
317 views

Cancel a cronjob or an automatically loaded process on OS X

I'm currently being bugged by Mail.app popping open every friday at the same time and simultaniously I receive mails from an app iBackup which I used to have installed. I would like to get rid of it ...
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1answer
219 views

How can I automate or script daily downloads for any new anti- virus databases, and then have the program scan my drive?

(I know there are much better softwares out there for the Mac so please don't go there! The politics of this company dictate which Anti virus we have to use) Anyway without any further wait: ...
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2answers
1k views

How to specify default MTA?

I'm trying to use the MAILTO function in crontab on my mybookworld (it's a NAS) I've installed a rather unfamiliar (i think) MTA: ESMPT With mutt (console based email client) it works perfectly. But ...
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1answer
300 views

Cron not executing jobs

I'm having trouble making cron work. I edit my cron jobs doing sudo crontab -u myuser -e sudo crontab -u myuser -l prompts my cron tables: ##### */1 * * * * /home/myuser/Projects/scripts/cron.sh ...
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2answers
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How to create folders according to date in Linux?

Is there any other short/easier and smarter way to do the following in Linux? cd /home/abcd/dammi mkdir $(date +%Y-%m) cd $(date +%Y-%m) mkdir $(date +%d) # RESULT : /home/abcd/dammi/2011-05/26 cd ...
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2answers
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cron can't read PYTHONPATH environment variables?

I have added to the PYTHONPATH on my server's .bash_profile file. However it appears that cron isn't reading from it because I am getting import errors. If I run the exact command cron calls on the ...
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820 views

How to get log of running cron job

How can I tail the running cron job, so that I can come to the conclusion that my job is going on.
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2answers
111 views

different way of editing crontab

I have two ways editing crontab 1. edit /etc/crontab, then restart crond 2. crontab -e crontab in both cases I am logged in as root. what are the differences?
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3answers
8k views

Crontab not working in Ubuntu 10.04

I installed it in a machine at work and it wouldn't do anything, no matter what I did. So now I have it on virtualbox at home and it also doesn't work. Here's what I'm trying to do: Have a file on ...
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2answers
979 views

RHEL6 Crontab doesn't work properly?

In RHEL6 root's account I have crontab job: 30 6 18 4 1 /sbin/init 6 It worked fine on the 18th of April and properly restarted my system, BUT it also restarted my OS at 6:30 on next Monday - ...
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1answer
963 views

Deleting files and emptying trash using cron

I'm new to making crontab files and I decided to try and make a job that would delete the contents of my Downloads folder, and then empty the trash. This is what I have: 0 9 * * * rm ...
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2answers
800 views

From what context is a cron task executed?

I am asking this question after royally destroying a Linux box. Let me give you some background so you know where I am coming from. I currently have (well... did have) a RedHat Linux box running ...
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2answers
2k views

How to execute a php file with crontab?

I have ubuntu setup with lamp and I was wondering what I would type to start a php page say at 2am everyday. I am still studying how crontab works so I can't test to see which one works. So if I ...
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2answers
6k views

how to run cron jobs on GMT not local time?

How can I make cron jobs run on GMT, not local time? this is my crontab file: #m h d m wday command TZ=GMT 5 0,6,12,18 * * * ~/Documents/bash/transfer.sh my jobs seem ...
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2answers
3k views

Cron ignoring an update to crontab

I've commented out a line in the crontab on a debian server, which I guess was there by default yet was causing me to get error emails every hour: # m h dom mon dow user command 17 * * * * root ...
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1answer
54 views

Cron that needs more time than he's allowed to

My crontab runs a cron every 5 minutes... If the cron needs more than 5 minutes to run, can this be a problem?? Can the problem be with the commands the cron runs? Thanks for your answer ;-)
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Running a bash script at random times using cron job

I need to monitor intrusion on a server at (relatively) random intervals. For that I have set up a cron job to run every hour. I have written three scripts: wrapper script that calls a ...
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2answers
6k views

How to stop all instances of cron?

I have a cron job that executes a rake task in rails. I noticed in the log that it was running the task 4 times everytime it was executed. The problem is that there are 4 instances of cron running. I ...
0
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1answer
539 views

Running an Automator task at night

I've just created an Automator workflow and I'm using crontab to execute it at night. The problem is that, after a while, the machine is going to sleep and a password is required (this is the intended ...