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Setting up a cron job for once a month to start a script.

the script is to rotate a file each month as it gets too big and rename the old one. when a file is older than six months I wanted it to be deleted.

Looking to run this script once a month. Is that possible to get the old one deleted?

Please let me know if that isn't clear enough.

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Why not just use logrotate? – Michael Hampton May 29 '13 at 20:33
@scottmarriott yeah, Mr Hampton's right, the functionality you described is basically the exact thing logrotate does. – Bratchley May 29 '13 at 20:45
Yeah I've just had a good look at logrotate makes sense cheers all – scott marriott May 29 '13 at 20:54
@MichaelHampton you should make that an answer. – evilsoup May 30 '13 at 18:53

You could start with this:

find /your/file -mtime +182 -exec rm {} +

Where +182 are the days quantity.

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Thanks for that, might have a play with it, but I maybe logrotate might be the best option – scott marriott May 29 '13 at 20:55
@jordanm any ideas why this might not of worked? – scott marriott May 30 '13 at 9:51
ApplicationServer/logs/TestClone01 $ ls -ltr total 3320 1048458 13 Dec 09:46 SystemOut_12.12.13_09.46.29.log 28 May 12:44 SystemOut.log.2013-05-28-12:44:52 71 30 May 08:57 SystemOut.log.2013-05-30-08:57:22 48432 30 May 09:16 SystemOut.log no_env):/usr/websphere6/was61TE_LV2/ApplicationServer/logs/TestClone01 $ find SystemOut.log -mtime +1 -exec rm {} + find: 0652-083 Cannot execute :: A file or directory in the path name does not exist. – scott marriott May 30 '13 at 9:53
I changed number of days to 1 – scott marriott May 30 '13 at 10:09
@scottmarriott Not all versions of find support +/- for -mtime. What OS and version of find do you have? – jordanm May 30 '13 at 13:04

You can just use logrotate. It's already available on most Linux systems, and many packages already have logrotate scripts pre-configured, or you can tweak them or write your own.

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