Cron on OSX from Rev

[Sivakatirswami]

Of course this script wipes out the entire crontab replacing it with  
a single entry... (!)  so beware if you have lots of jobs set up with  
something  like CronniX (an excellent, very easy to use OSX  cron  
utility...  freeware)

It should  not take much to whip up a little Rev GUI to handle a  
multi-line file though...

I like to use voice reminders:

like this

/Users/katir/Documents/scripts/goForAWalk.sh

#!/bin/sh
NOW=`date +%H:%M`
say "Please. It's $NOW You have been sitting for an hour. Get up and  
go for a walk."

But I thought cron was deprecated on OSX and that we would have to  
start eating launchD for this kind of thing in the future?

Ken, thanks for that script.  I can leave CronniX behind now and  
move  this stuff into my rev PIM... I've just been thinking about  
this recently...  but i could make the  leap between the cmd line and  
the rev script...if all it is is managing a single text file of cron  
tab lines and then loading with a shell cmd ... that's really 'too  
easy!"  :-)

Sivakatirswami

on mouseUp
   put "~/myRemindercron" into tCronFile
   put format("*\t*/1\t*\t*\t*\t") & \
       "/Users/katir/Documents/scripts/goForAWalk.sh" & numToChar(10)  
into tCronData
   put tCronData into url("binfile:" & tCronFile)
   get shell("crontab ~/myRemindercron")
   if it <> "" then
     answer error it titled "Cron Status"
   else
     answer "Get up reminder set for every hour." titled "Cron Status"
   end if
   delete file tCronFile
end mouseUp




On Dec 28, 2005, at 10:46 AM, Ken Ray wrote:

> On 12/28/05 10:55 AM, "Dom" <mcdomi at free.fr> wrote:
>
>
>> Thomas McGrath III <3mcgrath at adelphia.net> wrote:
>>
>>
>>> Does any one know where these files live?
>>>
>>
>> you would like to debut at:
>>
>> http://www.afp548.com/article.php?story=20050103223643995
>>
>> "One of the most essential, and misunderstood, server admin skills is
>> being able to maintain a crontab file. The syntax of the crontab file
>> though has been known to drive a sysadmin to drink."
>>
>> ;-)
>>
>
> Here's an example I use to set up a cron at 2:00am every morning to  
> backup a
> mySQL database called "mydb". Basically you create a crontab file  
> and then
> call "crontab" on it (watch for line wraps):
>
>   put "~/mydbcron" into tCronFile
>   numToChar(10) into tCronData
>   put format("0\t2\t*\t*\t*\t") & \
>     "/usr/local/mysql/bin/mysqldump -u root mydb > ~/Documents/ 
> mydbsql" & \
>     numToChar(10) into tCronData
>   put tCronData into url("binfile:" & tCronFile)
>   get shell("crontab ~/mydbcron")
>   if it <> "" then
>     answer error it titled "Cron Status"
>   else
>     answer "Backup has been set for 2:00 AM every day." titled  
> "Cron Status"
>   end if
>   delete file tCronFile
>
> Hope this helps,
>
> Ken Ray
> Sons of Thunder Software
> Web site: http://www.sonsothunder.com/
> Email: kray at sonsothunder.com
>
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