#!/usr/bin/env perl
use v5.36.0;
use strict;
use warnings;

my $input_file = $ARGV[0] or die 'No input save';

open my $fh, '<', $input_file;
read $fh, my $raw_save, 128*1024;
close $fh;
open $fh, '>', $input_file;
print $fh $raw_save;
close $fh;