schedule a script in crontab file problem

I need to schedule a job to run the cleanup.ksh every 30 minutes. The
cleanup.ksh
will cleanup the files older than 30 minutes in
/appl/DEV_SERVER/proj/ftp/upload,
so that it has 30 minutes gap. Here's the script and how I modify the
crontab file,
but it still couldn't cleanup the files. If I execute the script
manually,
it works fine. Any ideas?? What am I missing here? suggestions?


#!/usr/bin/ksh
# filename: cleanup.ksh, cleanup ksh script
# usage: ksh cleanup n

find /appl/DEV_SERVER/proj/ftp/upload -type f -atime $1 -exec rm -f {}
\;


I did crontab -e, and add the following
30 0 * * 1-5 ksh /appl/proj/cronjob/cleanup.ksh +1/48
Please help. thanks!!

In article <1104197156.048798.40880@z14g2000cwz.googlegroups. com>,
jrefactors@hotmail.com wrote:

> I need to schedule a job to run the cleanup.ksh every 30 minutes. The
> cleanup.ksh
> will cleanup the files older than 30 minutes in
> /appl/DEV_SERVER/proj/ftp/upload,
> so that it has 30 minutes gap. Here's the script and how I modify the
> crontab file,
> but it still couldn't cleanup the files. If I execute the script
> manually,
> it works fine. Any ideas?? What am I missing here? suggestions?
>
>
> #!/usr/bin/ksh
> # filename: cleanup.ksh, cleanup ksh script
> # usage: ksh cleanup n
>
> find /appl/DEV_SERVER/proj/ftp/upload -type f -atime $1 -exec rm -f {}
> \;
>
>
> I did crontab -e, and add the following
> 30 0 * * 1-5 ksh /appl/proj/cronjob/cleanup.ksh +1/48
> Please help. thanks!!

You scheduled it to run every weekday at 00:30. If you want it to run
every 30 minutes on weekdays, it should be:

0,30 * * * 1-5 ...

BTW, you don't need to put "ksh" in the crontab command line -- that's
done automatically due to the "#!/usr/bin/ksh" in the script.

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***

Barry Margolin wrote:
> You scheduled it to run every weekday at 00:30. If you want it to
run
> every 30 minutes on weekdays, it should be:
>
> 0,30 * * * 1-5 ...
>
> BTW, you don't need to put "ksh" in the crontab command line --
that's
> done automatically due to the "#!/usr/bin/ksh" in the script.

Thanks Barry. so after I execute crontab -e, and do the editing, then
the updated crontab file will be effectively immediately?
please advise more. thanks

In article <1104255259.160255.157290@f14g2000cwb.googlegroups .com>,
<jrefactors@hotmail.com> wrote:
>
>Barry Margolin wrote:
>> You scheduled it to run every weekday at 00:30. If you want it to
>run
>> every 30 minutes on weekdays, it should be:
>>
>> 0,30 * * * 1-5 ...
>>
>> BTW, you don't need to put "ksh" in the crontab command line --
>that's
>> done automatically due to the "#!/usr/bin/ksh" in the script.
>
>Thanks Barry. so after I execute crontab -e, and do the editing, then
>the updated crontab file will be effectively immediately?
>please advise more. thanks

Use "crontab -l" to check.

yes, when I do crontab -l, I can see my changes in crontab.

ksh cleanup.ksh +1/48 should cleanup all files that are 30 minutes old.
correct? looks like
it is not working even i execute it manually. I want all files in
/appl/DEV_SERVER/proj/ftp/upload that are older than 30 minutes
are deleted. But if I do ksh cleanup.ksh -1/48, then it is fine.

Again, this is the script:

#!/usr/bin/ksh
# filename: cleanup.ksh, cleanup ksh script
# usage: ksh cleanup n

find /appl/DEV_SERVER/proj/ftp/upload -type f -atime $1 -exec rm -f {}
\;


please advise more. thanks!!

In article <1104266338.914527.13140@z14g2000cwz.googlegroups. com>,
jrefactors@hotmail.com wrote:

> yes, when I do crontab -l, I can see my changes in crontab.
>
> ksh cleanup.ksh +1/48 should cleanup all files that are 30 minutes old.
> correct? looks like
> it is not working even i execute it manually. I want all files in
> /appl/DEV_SERVER/proj/ftp/upload that are older than 30 minutes
> are deleted. But if I do ksh cleanup.ksh -1/48, then it is fine.

I've never seen the '-atime +1/48' syntax in find before. I'm not aware
of find allowing fractions there. If you're using GNU find it has
-amin, which allows you to specify the amount of time in minutes rather
than days.

>
> Again, this is the script:
>
> #!/usr/bin/ksh
> # filename: cleanup.ksh, cleanup ksh script
> # usage: ksh cleanup n
>
> find /appl/DEV_SERVER/proj/ftp/upload -type f -atime $1 -exec rm -f {}
> \;
>
>
> please advise more. thanks!!

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***