I have a directory that has multiple folders. I want to get a list of the names of folders that have not been modified in the last 60 minutes.
The folders will have multiple files that will remain old so I can't use -mmin +60.

I was thinking I could do something with inverse though. Get a list of files that have been modified in 60 minutes -mmin -60 and then output the inverse of this list.

Not sure to go about doing that or if there is a simpler way to do so?


This is what I have so far to get the list of folders

'find /path/to/file -mmin -60 | sed 's/\/path\/to\/file\///' | cut -d "/" -f1 | uniq'

Above will give me just the names of the folders that have been updated.

Well, if you want a pure Perl (no 'system') solution, I suggest to read:

http://perldoc.perl.org/functions/opendir.html ,
http://perldoc.perl.org/functions/readdir.html ,
http://perldoc.perl.org/functions/closedir.html ,
http://perldoc.perl.org/filetest.html ,
http://perldoc.perl.org/functions/stat.html .

And after that http://datetime.perl.org/wiki/datetime/dashboard and find there how to calculate time intervals.

By the way, there is general pitfall of daylight saving time <-> regular time - regardless of language and OS.