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Re: crontab every 5 minutes?



On Thu, 2004-12-23 at 20:02 -0600, Lance Hoffmeyer wrote:
> Hello,
> 
> How do I get crontab to run a process every 5 minutes?
> Currently, it is setup as:
> 5,10,15,20,25,30,35,40,45,50,55 * * * 
> 
> Surely, there is a more elegant approach?

Yes, yes there is.

$ man crontab
  SEE ALSO
         crontab(5), cron(8)

$ man 5 crontab
       Step values can be used  in  conjunction  with  ranges.
       Following a range with ``/<number>'' specifies skips of
       the number's value through  the  range.   For  example,
       ``0-23/2''  can  be  used in the hours field to specify
       command execution every other hour (the alternative  in
       the V7 standard is ``0,2,4,6,8,10,12,14,16,18,20,22'').
       Steps are also permitted after an asterisk, so  if  you
       want to say ``every two hours'', just use ``*/2''.

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Ron Johnson, Jr.
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