First add these lines to /etc/apt/sources.list:
deb http://deb.debian.org/debian stretch-backports main
deb http://deb.debian.org/debian experimental main
Run:
apt-get update
apt-get -t stretch-backports install tmux
Install from experimental or from backports on debian
· One min read
Hreniuc Cristian-Alexandru
Maintainer of this library