Colemak ↔ QWERTY (convert text typed in one layout to the other)

colemak_to_qwerty.sh

#!/usr/bin/env bash

while read line
do
  echo "$line" | tr 'fpgjluy;rstdneiokFPGJLUY:RSTDNEIOK' 'ertyuiopsdfgjkl;nERTYUIOPSDFGJKL:N'
done < "${1:-/dev/stdin}"

qwerty_to_colemak.sh

#!/usr/bin/env bash

while read line
do
  echo "$line" | tr 'ertyuiopsdfgjkl;nERTYUIOPSDFGJKL:N' 'fpgjluy;rstdneiokFPGJLUY:RSTDNEIOK'
done < "${1:-/dev/stdin}"

I was on the bus, it was night, my phone was dead, and I wanted to write my thoughts about how much I wanted to steal something from the guy in front of me. So I pull out my computer and start typing gibberish (Colmak on querty) on my computer. The guy next to me looked over confused. :)