7
I have an application that fetches some feeds. Is there a way I can get it to be done every 30 minutes?
(I've not installed a graphical desktop, so a terminal fix would be loveable :D)
7
I have an application that fetches some feeds. Is there a way I can get it to be done every 30 minutes?
(I've not installed a graphical desktop, so a terminal fix would be loveable :D)
12
Use your crontab
:
crontab -e
Then enter a line like the following
*/30 * * * * /path/to/your/command
Save it and it should run every 30 minutes of every hour, every day.
Updated the 30 minutes part, was being too quick. Thanks @nicolas, you got a +1.
7
Cron sounds like what you're looking for.
Log in as the user you want the task to be ran by, then type "crontab -e"
Your favorite editor will open, and you will get a file with this format :
# m h dom mon dow command
So to run '/home/foo/my_program' every 30min, you would add this line
*/30 * * * * /home/foo/my_program > /dev/null
/dev/null is there so you do not get the output sent by mail if your program writes something to stdout.
5By the way */30 means every 30 minutes while 30 means "every time the clock hits 30mins (0h30, 1h30, 2h30...) which would cause the task to be ran each HOUR instead of every 30 mins. – Nicolas – 2011-06-09T09:41:08.410
1
Use cron
to run it periodically.
From the account of the user you wish to run the script:
crontab -e
Then add a new line as follows:
*/30 * * * * <path/to/script>
Then save the crontab, which will automatically install it. The job will then run every 30 minutes and email you any output.
1
This sounds exactly like a job for cron. This is a good howto use it, yes it's for ubuntu and you're using fedora, but as far as I'm aware there are no differences between the two regarding cron.
when i type crontab -e, am i suppose to open the file /tmp/crontab.DYFYJ1"? – Jason94 – 2011-06-09T09:52:16.287
Yes, this is normal behavior. The
crontab
command will take care of it. From themanpage
: "After you exit from the editor, the modified crontab will be installed automatically." – slhck – 2011-06-09T09:54:25.163is there a way to test crontab? – Jason94 – 2011-06-09T09:56:17.330
Call
crontab -l
to list your current crontab entries. – slhck – 2011-06-09T09:57:21.447@Jason94: To test crontabs, I usually copy the entry and edit the time to run in the next minute. – Zan Lynx – 2011-06-09T14:25:17.467