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Gemster
Halfop
Joined: 04 Oct 2010
Posts: 51
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 Posted: Fri Feb 25, 2011 11:51 am Post subject: |
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I had a look at them site you posted but i still get confused as they do say "* */1 * * *" every 1 hour
or
"* *1-24 * * *"
and for every 2 hours it be like this:
"* *0,2,4,6,8,10,12,14,16,18,20,22 * * *"
is this correct. Its very confusing but i guess once u get the hang of it, it gets easyer to understand.
Thanks
Gemster |
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caesar
Mint Rubber
Joined: 14 Oct 2001
Posts: 3741
Location: Mint Factory
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| Posted: Fri Feb 25, 2011 12:13 pm Post subject: |
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| Quote: |
It can contain up to five fields: minute, hour, day, month, weekday; delimited by whitespace.
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So the "* */1 * * *" should trigger once every hour, 24/7/365 (or 366). A 'every two hours' crontab mask will be: "* */2 * * *"
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Once the game is over, the king and the pawn go back in the same box. |
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willyw
Revered One
Joined: 15 Jan 2009
Posts: 1175
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| Posted: Fri Feb 25, 2011 1:39 pm Post subject: |
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| Gemster wrote: |
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Its very confusing but i guess once u get the hang of it, it gets easyer to understand.
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I won't argue with that. 
Try:
"0 * * * *"
Won't that make it run every hour, on the minute that ends in :00 ?
If you want to choose a different minute of the hour, just change that number.
Disclaimer:
I'm not saying that this is THE right way to do it. Perhaps someone else will be along...
In the meantime, try it, and let us know. |
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Gemster
Halfop
Joined: 04 Oct 2010
Posts: 51
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| Posted: Fri Feb 25, 2011 1:58 pm Post subject: |
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| caesar wrote: | | Quote: |
It can contain up to five fields: minute, hour, day, month, weekday; delimited by whitespace.
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So the "* */1 * * *" should trigger once every hour, 24/7/365 (or 366). A 'every two hours' crontab mask will be: "* */2 * * *" |
It dosent tho. Even if i do "* */2 * * *" or "* */3 * * *" it still triggers every minute as tho its ignoring the /1, /2 or /3.
Yes willyw it works with "0 * * * *" but what if i need it for every 2 hours or every 3 hours ?
Thanks
Gemster |
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willyw
Revered One
Joined: 15 Jan 2009
Posts: 1175
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| Posted: Fri Feb 25, 2011 2:16 pm Post subject: |
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| Gemster wrote: |
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Yes willyw it works with "0 * * * *" but what if i need it for every 2 hours or every 3 hours ?
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Here:
http://www.linuxhelp.net/guides/cron/
it says
| Quote: |
If you wanted to run a command every 2 hours you could enter in */2 for the hour field. This would run the specified command at 2am, 4am, 6am, 8am, 10am, 12pm, 2pm, and so on. An example of this type of entry would be:
0 */2 * * *
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And if that doesn't work, I wonder...
what if you entered a list of specific hours?
"0 0,2,4,6,8,10,12,14,16,18,20,22 * * *" |
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Gemster
Halfop
Joined: 04 Oct 2010
Posts: 51
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| Posted: Fri Feb 25, 2011 2:44 pm Post subject: |
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Ok willyw,
Testing 0 */2 * * * now to see if that works, if not ill test the "0 0,2,4,6,8,10,12,14,16,18,20,22 * * *".
I guess thats a 4 hour test lol.
Ill let u know if any of them work in 4 hours 
Thanks
Gemster |
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Gemster
Halfop
Joined: 04 Oct 2010
Posts: 51
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| Posted: Fri Feb 25, 2011 4:19 pm Post subject: |
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Ok "0 */2 * * *" seems to be working so far
I think what the problem is , is that the first * meens every minute so that would explain why "* */2 * * *" done the command every minute instead of every 2 hours.
Thanks
Gemster
Edit: Yes its working every 2 hours with "0 */2 * * *" |
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