I have a bunch of paths and for each path I want to convert it from relative path to absolute path.

Have a look at Path::ExpandTilde. Note that the resulting path will be dependent on the system this function is being run on and the current username.

Update: Note the docs of File::Spec's rel2abs: "No checks against the filesystem are made." But if you don't mind going out to the filesystem, you can also use Cwd's abs_path.

update

corrected typo s/tilda/tilde/ for searchability, sorry Tilda ...

Yes that I know. The question is, do I need to handle it myself (replace ~ with $ENV{HOME}) or is there a better way to do it?

Yes, after replacing it's not a relative path anymore.

Most probably there is a module doing all this.

Look into File::Path and similar namespaces on CPAN

EDIT

have a look into Path::Tiny, it seems to do the job

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery}

This looks strange to me... I wonder on which system and in which shell you are doing this.

It looks like rel2abs is - on your system - a shell command (I don't have it). So I assume you are testing in the shell.

IMHO: Your shell should handle the expansion of ~ to the correct path. If it does not, try to fix your shell or try a different shell.

Tests in my shell (/bin/bash):

$ perl /tmp/t.pl ~/.vimrc ~user/.vimrc ~root/.vimrc
/home/linuxer/.vimrc
/home/user/.vimrc
/root/.vimrc
[download]

#! /usr/bin/env perl
use strict;
use warnings;
use 5.020;

say $_ for @ARGV;
[download]

Hi I'm sorry that my example was not intuitive. I meant that I use perl's rel2abs sub. I used Path::Tiny and it solve the problem. Thank you!