Another simple, fast solution, based on a snippet found on page 23 of Dominus's book, Higher-Order Perl:

sub short {
    my $path = shift;
    $path = ˜ s{.*/}{};
    $path;
}

[download]
...or as a callback: 
my $short = sub {
    my $path = shift;
    $path =~ s{.*/}{};
    $path;
};

[download]
Callback example: 
perl -Mstrict -we '                                                   
+                                                          
  my $dir = shift or die "missing dir name...\n";
  die "not a directory\n" unless -d $dir;
  my $short = sub {
    my $path = shift;
    $path =~ s{.*/}{};
    $path;
  };
  sub dosub {
    my $_dir = shift;
    opendir my $dh, $_dir or die "could not open $_dir\n";
    while ( my $file = readdir($dh) ) {
      next if $file eq "." || $file eq "..";
      if ( -d "$_dir/$file" ) {
        dosub ("$_dir/$file");
      } else {
        print "full: $_dir/$file\n"; print "shortened: ", $short->("$_
+dir/$file"), "\n\n\n";
      }
    }
  }
  dosub($dir);
' temp01

__output__
full: temp01/subtemp01/subsubtemp01/file01
shortened: file01


full: temp01/subtemp01/subsubtemp02/file02
shortened: file02


full: temp01/subtemp01/subsubtemp03/file03
shortened: file03


full: temp01/subtemp01/subsubtemp04/file04
shortened: file04

[download]

Edit: shortened output a bit...

In reply to Re: Regex for ignoring paths by dbuckhal
in thread Regex for ignoring paths by Amblikai

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