My /var/lib/docker folder was non empty (12GB) event after big cleanup (containers, images, volumes..)

It's a known issue with some layers not removed when you do docker rm -f (force)

Solution : service docker stop; rm -rf /var/lib/docker/*; service docker start

:-/

respawn-pane -k

better than kill-pane

The easiest way is to just convert the text file to utf-8 and pipe that to grep:

iconv -f utf-16 -t utf-8 file.txt | grep query