#!/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 { /^\h*([0-9]*)/ } @lines; my $maxval = max @values; my $len = 1 + max map { length } @lines; # left padding my $size = ($width - $len) / $maxval; # bar multiplication for (@lines) { my $val = shift @values; say $_, ' ' x ($len - length), '#' x ($val * $size); }