command line print file names to output file

Question

This seems easy in Linux, but I'm trying to print the names of *.pdf files within a directory and its subdirectories to an output file. I have perl installed on my windows machine. What's a simple way to do this?

Thanks, Jake

Answer 1

See the File::Glob module.

Specifically:

#!/usr/bin/perl
use File::Glob ':glob'; # Override glob built-in.                          
print join("\n",glob("*.pdf"));

Answer 2

Using Perl, you should almost certainly be using the File::Find core module.

Answer 3

use strict;
use warnings;
use File::Find;

my $dirname = shift or die "Usage: $0 dirname >outputfile";

File::Find::find( sub {
    print $File::Find::name, "\n" if $File::Find::name =~ /\.pdf\z/
}, $dirname );

Answer 4

Not much different than Linux.

dir *.pdf > fileyouwant.txt

If you only want the filenames, you can do that with

dir/b *.pdf > fileyouwant.txt

If you also want subdirs,

dir/s/b *.pdf > fileyouwant.txt

If you aren't in that directory to start with

dir/s/b C:\Path\*.pdf > fileyouwant.txt

Answer 5

File::Find::Rule is often nicer to use than File::Find.

use File::Find::Rule;

my $rule = File::Find::Rule->file()->name('*.pdf')->start('C:/Path/');
while (defined (my $pdf = $rule->match)) {
    print "$pdf\n";
}

or simply

use File::Find::Rule;

print "$_\n" for File::Find::Rule->file()->name('*.pdf')->in('C:/Path/');