#!/usr/bin/env perl use 5.014; use warnings; use List::Util qw( max ); my $width = $ENV{COLUMNS} || 80; my @lines = readline; chomp for @lines; my @values = map { s/^\h*([0-9]*)// and $1 } @lines; my $maxval = max @values; my $lenval = 1 + int log($maxval) / log 10; # max string length my $len = 1 + max map { length } @lines; # left padding my $size = ($width - $lenval - $len) / $maxval; # bar multiplication for my $nr (0 .. $#lines) { my $val = $values[$nr]; printf "\e[90m"; printf "%*s", $lenval, $val; print "\e[0m"; printf '%-*s', $len, $lines[$nr]; say '-' x ($val * $size); }