Re: Opening and closing applications periodically
Re: Opening and closing applications periodically
- Subject: Re: Opening and closing applications periodically
- From: Donald Hall <email@hidden>
- Date: Sat, 19 Jul 2003 22:02:21 -0600
From Miriam-Webster:
arcane: known or knowable only to the initiate : SECRET <the arcane
rites of a mystery cult>; broadly : MYSTERIOUS, OBSCURE <the
technical consultant's arcane explanations>
Okay, not totally arcane in the sense of the first definition. You
can look it up, and like a lot of things in Unix, once memorized it
may be easy to use. But I myself do find it a bit obscure. I think it
is easier to type in a desired time like 7:00 and click on an AM/PM
radio button rather than work out that for 7:00 PM you should use 0
19, or to choose a day of the week from a popup menu rather than
remember that Sunday, not Monday, is the first day of the week and is
represented by 0, just to name two examples.
If cron fits your needs, and you are comfortable dealing with Unix
and familiar with how to set up the argument line, you should use it.
It would make no sense for you to plunk down $25 for iDo Script
Scheduler or $12 for Script Timer. However, someone not familiar with
Unix may be more comfortable with familiar GUI user elements and a
drag and drop interface. Also, both the Mac programs mentioned above
have features that cron doesn't. There's a comparison between cron
and Script Timer on the Script Timer FAQ page. Just go to
www.appsandmore.com, click on the Shareware and Freeware button, and
follow the link in the Script Timer write up.
Regards,
Don
At 8:14 AM -0700 2003/07/19, email@hidden wrote:
>
On or about 7/19/03 1:54 AM, Donald Hall wrote:
>
>
> arcane argument line to figure out
>
>
Arcane?
>
>
The format is:
>
>
Min Hr Date Month DayOfWeek [1]
>
>
That's hardly arcane, Donald.
>
>
--
>
Gary
>
>
>
[1] Standard Cron Format...
>
>
Minute Hour Date Month DayofWeek, where:
>
>
Minute is 0-59, (the minute of the hour)
>
Hour is 0-23, (the hour of the day)
>
Date is 0-31 (the day of the month)
>
Month is 1-12 (the month)
>
Dayofweek is 0-6 (Sunday-Saturday)
>
>
Each field can specify a single value. That is, if you want something to be
>
executed on the hour, your minute field would be 0.
>
>
Each field can be specify multiple values by placing the desired numbers
>
separated by commas (no spaces!). That is, if you want something to be
>
launched on both the hour and the half-hour, your minute field would be
>
0,30.
>
>
Each field can specify a range of values by placing the desired numbers
>
(inclusive) separated by a dash (no spaces!). That is, if you want something
>
to be launched during the hours of 8 AM and 5 PM, your hour field would be
>
8-17.
>
>
Each field can be a combination of single values and value ranges. That is,
>
if you want something to be executed on the hour, on the half hour, and
>
every
>
minute from 45 to 50 minutes after the hour, your minute field would be
>
0,30,45-50.
--
Donald S. Hall, Ph.D.
Apps & More Software Design, Inc.
email@hidden
http://www.appsandmore.com
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