tmux

Install tmux

$ sudo apt install tmux

Install the self-contained gpakosz/.tmux configuration file.

Change the following settings

# ~/.tmux.conf.local
tmux_conf_copy_to_os_clipboard=true
set -g mouse on

Auto-load tmux when loading the terminal [source]

# autoload tmux
# if shell is interactive, and TMUX var is set...
if [[ $- == *i* ]] && [[ -z "${TMUX}" ]]; then
  tmux attach || exec tmux new-session && exit;
fi