azatoth is technically correct, but remember that -M doesn't output integers. An example from my box: 
$ perl -e 'print -M $ARGV[0], "\n"' foo.pl
21.7745138888889

[download]
So, -M $file == 7 is true if and only if the file was created precisely 168 hours ago. :) (Excluding leapyears, etc.) So it's better to use the greater-than sign. If for some (unfathomable-to-me) reason you want files that were created seven days ago but not those create more than seven days ago, use int( -M $file ) == 7.

Trying to compare integers with floating-point numbers can be confusing, since there's rarely an exact match.

stephen

In reply to (stephen) Re: Re: file date by stephen
in thread file date by Anonymous Monk

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