GNU/Linux screen

INSTALL
=======
$ apt install screen
$ nano ~/.screenrc
caption always "%{= kw}%-w%{= gW}%n %t%{-}%+w %-= %m-%d %0c"

RUN
===
create/reattach session     $ screen -R
                            $ screen -R <session-name>
                            $ screen -R <session-number>
list session name/number    $ screen -ls

ON SCREEN
=========
Ctrl+A <something>
a         Send Ctrl+A
c         Create new window
"         List window
n/p       Navigate next/previous window
0-9       Navigate to window 0/1/.../9
Ctrl+A    Toggle previous window
k         Kill window (or use `exit`)
S/|       Split region horizontally/vertically
tab       Go to next region
X         Close region
d         Detach back to shell (reattach with `screen -R`)