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Crontab deleting files command question


 
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# 1  
Crontab deleting files command question

Hello out there,
Our system has a pdf generator that creates pdf files. We dont need them pas 120 days.
So I have this command in my crontab. I currently set it to "0" for testing. But normally have it set to -mtime 120 to remove files out of the folders from PDF out to several other potential folders out. Nothing ever happens though. Crontab runs. Just this command never seems to happen. Is there something missing?
Code:
0 0 * * * find /prod/app/$LOGNAME/data/audit/pdf/*/*/*.pdf -type f -name '*.pdf' -mtime 0 -exec rm {} \;


Last edited by Scott; 05-04-2013 at 10:17 AM.. Reason: Code tags
# 2  
Quote:
Originally Posted by vsekvsek
Hello out there,
Our system has a pdf generator that creates pdf files. We dont need them pas 120 days.
So I have this command in my crontab. I currently set it to "0" for testing. But normally have it set to -mtime 120 to remove files out of the folders from PDF out to several other potential folders out. Nothing ever happens though. Crontab runs. Just this command never seems to happen. Is there something missing?
0 0 * * * find /prod/app/$LOGNAME/data/audit/pdf/*/*/*.pdf -type f -name '*.pdf' -mtime 0 -exec rm {} \;

Are you saying it is never executed, or it runs but doesn't do a thing?

As a rule of thumb you should always use full paths when using crontab since it doesn't have a profile.

Also, find is recursive so this:
Code:
find /prod/app/$LOGNAME/data/audit/pdf/*/*/*.pdf  <...>

Can be replaced with this:
Code:
find /prod/app/$LOGNAME/data/audit/pdf/ -name "*.pdf" <...>

Lastly, rm is oftentimes alias'ed to "rm -i" so it may be expecting user input. Again try using full paths to avoid this behavior. Try:
Code:
0 0 * * * /usr/bin/find /prod/app/$LOGNAME/data/audit/pdf/ -type f -name "*.pdf" -mtime 0 -exec /bin/rm {} \;


Last edited by verdepollo; 05-03-2013 at 12:43 PM.. Reason: Added [icode]
# 3  
Are you sure the shell defines $LOGNAME when invoked by cron?
Better set its value directly in the crontab!
rm is certainly not aliased in a script but the rm can become interactive by itself, so better use rm -f

Last edited by MadeInGermany; 05-03-2013 at 11:09 PM..
# 4  
man find:
Quote:
Numeric arguments can be specified as
+n for greater than n,
-n for less than n,
n for exactly n.
So you might need to specify -mtime +0 to find any files, as 0 alone will just find those files modified exactly NOW.
This User Gave Thanks to RudiC For This Post:
# 5  
Better, you can create a script for this command as already discussed here, cron doesn't have profile. So create a script with needed parameters and call the script in cron
# 6  
Quote:
But normally have it set to -mtime 120 to remove files out of the folders
-mtime 120 finds (and removes) files 120 days old.

-mtime +120 finds files at least 120 days old, and is what you want to use.
# 7  
Poster @hanson44 has the correct solution.
 

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