Backing up files

Question

I would like to backup all files older than 90 days and greater plus gzip them. I could execute:

find /path/to/files -type f -mtime 90 -exec gzip "{}" \;

Problem with this command is it includes files 90 days old and not older ones. So it will gzip June's files but not May's. Thanks!

score 2 · Answer 1 · answered Aug 31 '15 at 18:51

2

for exactly 90 it should be -mtim +89

answered Aug 31 '15 at 18:51

FargolK

1,667

score 2 · Answer 2 · edited Aug 31 '15 at 19:37

2

From man find

+n     for greater than n,
-n     for less than n,
 n      for exactly n.

-mtime n
    File's data was last modified n*24 hours ago.  See the comments for -atime to understand how rounding affects the interpretation of file modification times.

So the correct line to backup files modified more than 90 days ago, will be

$ find /path/to/files -type f -mtime +90 -exec gzip {} +

edited Aug 31 '15 at 19:37

iruvar

16,725

answered Aug 31 '15 at 19:02

tachomi

7,592

The man page I was using did not include that info. Thanks for the reference! – nizbit Aug 31 '15 at 20:40

score 1 · Accepted Answer · answered Aug 31 '15 at 18:48

1

-mtime +90 should do the trick.

answered Aug 31 '15 at 18:48

Jakob Lenfers

727

Backing up files

3 Answers3