How to use the Perl
Problem: Using Perl, you need to determine the last time a file was accessed (read) or updated (modified).
Solution: Use the Perl
stat function to get this information. Let's look at a couple of short examples to see how this works.
Perl stat - getting the file access time
To determine the last access (read) time of a file named foo.txt, use this sample Perl code:
$filename = 'foo.txt'; $last_access_time = (stat($filename)); print "$last_access_time\n";
Perl stat - the file update/modification time
To determine the last modification time of a file named foo.txt, use this sample Perl code:
$filename = 'foo.txt'; $last_update_time = (stat($filename)); print "$last_update_time\n";
More Perl stat information
As shown in the Perl stat link, here are the definitions of these two fields:
8 atime last access time in seconds since the epoch 9 mtime last modify time in seconds since the epoch
Again, there is much more information in that stat link.