The Mojo framework has long had various utility functions for file manipulation, but recently in version 7.15 they were collected in a new class, Mojo::File. This class gives a very convenient and easy API for cross-platform file manipulation. It's also used across the entire Mojo framework, from Mojo::Home (now a Mojo::File subclass) to Mojo::Asset::File and +Mojo::UserAgent::Transactor.
In addition to the object constructor, Mojo::File exports some neat
functions for creating new objects; path() is equivalent to new, or you can
use tempdir() and tempfile() to get a object representing a temporary file
or directory.
use Mojo::File qw(path tempfile);
my $passwords = path('/etc/passwd')->slurp;
my $tmpfile = tempfile->spurt('OMG Look at her file')->move_to('/home/her/file');
Mojo::File is also supported by the ojo module, for quick oneliners. (If you don't know ojo, it's a conveniently named class to allow perl to take the -Mojo flag, and expose a bunch of single letter functions).
$ perl -Mojo -E 'say r j f("hello.json")->slurp'
Mojo::File also has some useful methods for iterating over a directory or
even a full tree of files. The list() method lets you get all the files,
and optionally directories and hidden files in a given directory, and
manipulate the results with all the power of Mojo::Collection, while
list_tree() does the same recursively.
$ perl -Mojo -E'say for f('/tmp')->list_tree->map(sub { uc })->each'
Finally, Mojo::File supports some simple overloading. Just interpolate it in a string, and it will do the right thing. Or let's say you want to iterate over each path part of the current directory:
perl -Mojo -E'say $_ for f->@*'
So easy! I think you will have fun with this module. Check out the documentation to learn more.