Perl Squirrel has been very busy collecting nuts ( about 1.5 million ) over the past years and his store room was about to burst. If the nuts were actually files in a directory, how would Nugget get rid of them fast? Nugget wants to keep only the nuts that were collected in the past 90 days ( they would taste better ). First get a count of the files that would get removed using the Unix find command and mtime option to count files older than 90 days...
cd \perlsquirrel\storeroom find . \( ! -name . -prune "*nuts.*" \) -type f -mtime +90 -print | wc -l
Now lets say the number of files returned was 1 million. In order to remove these, Nugget did the following...
cd \perlsquirrel\storeroom find . \( ! -name . -prune "*nuts.*" \) -type f -mtime +90 -print | perl -lne unlink
This removed 1 million files in about 9 minutes.
Note: This find command prevents descending into subdiretories.
Perl Squirrel advises...measure twice...cut once.