I have seen the .env file mentioned in several applications and environments, but my search-foo fails me and I could not find an explanation if using .env files is a standard or what?

In any case I was wondering if any Perl-related modules or system automatically load the content of the .env file and add the values from them to %ENV? Is there maybe a module that just by being used would do this? Basically this code: 

use strict;
use warnings;

my $filename = '.env';
if (-e $filename) {
    open my $fh, '<', $filename or die "Could not open '$filename' $!"
+;
    while (my $line = <$fh>) {
        next if $line =~ /^\s*(#.*)?$/;
        chomp $line;
        my ($key, $value) = split /\s*=\s*/, $line;
        $ENV{$key} = $value;
    }
}

# and just to display:
for my $key (sort keys %ENV) {
    printf("%-26s %s\n", $key, substr($ENV{$key}, 0, 40));
}

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In reply to .env loading the dot env file? by szabgab

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