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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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 ...
2
votes
1answer
965 views

Cron job on Mac not running during sleep

I have a cron job that will mail a list of all Google Tasks to my email address daily at 7am. (http://privacylog.blogspot.com/2010/07/api-for-google-tasks.html) I am running this on my laptop which, ...
0
votes
3answers
335 views

How to run a job on first login of each day using cron or something similar?

I need to run a script when i login for first time in a day. I may reboot or shutdown and then power on during the day. But i do not want the job to run during those power ups. It should run only once ...
0
votes
1answer
543 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 ...
0
votes
3answers
2k views

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: # ...
1
vote
1answer
471 views

Linux cron job error

I have setup a cron job to run a PHP file every 30 minutes: lynx -source public_html/scripts/file.php The result comes through to an email but seems to get this error: Can't Access ...
9
votes
1answer
7k views

Run a cron job every 5 minutes between two times

Is there a way to specify a job that runs every 5 minutes between some start time and some end time on business days in a crontab? Update I think it's relevant that my start and end times are not at ...
1
vote
3answers
445 views

Ubuntu Crontab error

I want to list files at 12h01. How can I set my crontab to do this? pedro@Pedro-PC:~/PL/trab4$ crontab -l # 01 12 * * * ls -l
0
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0answers
432 views

user crontabs don't work, only /etc/crontab

Hi when I use the command crontab -e to set up cron, the commands get triggered (according to syslog) but nothing happens. Also if I run sudo crontab -e. The only way to actually get cron working ...
2
votes
2answers
1k views

stdout and stderr of script doesn't get redirected when executed by cron

./script &>> log.txt I get a nice logfile, but if I have the same command executed by cron, lets say the crontab looks like this: * * * * * '/home/user/script &>> /home/user/log.txt' ...
10
votes
1answer
16k 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?
-1
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2answers
103 views

unable to use cron tab

I am using crontab on unix shell using putty to connect to unix server unable to use crontab i scheduled crontab at say * * * * * cat > new < new1 doesnt work I works only in home directory of ...
2
votes
5answers
14k views

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" ...
0
votes
1answer
257 views

linux crontab issue

I got this funny problem. I have an entry in the in cron like this 50 15 * * * /pmecs/log/lsmon/techsupportscript.sh 2>/pmecs/log/lsmon/cronerror.log Now, from what i know, this is correct ...
2
votes
1answer
705 views

How do I compress a directory on a Unix web server and email it on a sheduled basis?

After hearing about various high profile website creators getting stiffed recently after hardware failures on their servers I would like to implement a backup strategy on my websites. I have cPanel ...
12
votes
5answers
78k views

How to execute shell script via crontab?

I have a notify.sh script that looks like: notify-send "hi welcome" My crontab notification for 2 PM: 0 14 * * * home/hacks/notify.sh However, this doesn't work. What is the problem?
39
votes
8answers
80k views

Run a command every week with Cron?

Simple question- what would a crontab entry look like for a command I want to run every week on Saturday at 8:05 AM?