#!/bin/bash
awk 'BEGIN {FS=ORS=""} {$0=$0" "; for (n = 1; n <= length($0)-1; n++) if ($(n) != $(n+1)) print $(n); print "\n"}' ohje

# awk 'BEGIN {FS=ORS=""} {for (n = 1; n <= length($0); n++) if ($(n) != apu(length(apu)) then apu=apu+$n}' ohje

# if ($2!=0)
# x >= 0 ? x : -x
