Use the command „screen“ to open a virtual terminal session in you actual session. The sessions will stay active until you terminate them.
# build in
# apt-get install screen
# create new session
screen -S "NAME"
# detach session
Ctrl + A & Ctrl + D
# list open sessions
# reattach to session
screen -r "NAME"
# if you only have one session you can use
-a Force all capabilities into each window’s termcap.
-A -[r|R] Adapt all windows to the new display width & height.
-c file Read configuration file instead of ‚.screenrc‘.
-d (-r) Detach the elsewhere running screen (and reattach here).
-dmS name Start as daemon: Screen session in detached mode.
-D (-r) Detach and logout remote (and reattach here).
-D -RR Do whatever is needed to get a screen session.
-e xy Change command characters.
-f Flow control on, -fn = off, -fa = auto.
-h lines Set the size of the scrollback history buffer.
-i Interrupt output sooner when flow control is on.
-list or -ls. Do nothing, just list our SockDir.
-L Turn on output logging.
-m ignore $STY variable, do create a new screen session.
-O Choose optimal output rather than exact vt100 emulation.
-p window Preselect the named window if it exists.
-q Quiet startup. Exits with non-zero return code if unsuccessful.
-r Reattach to a detached screen process.
-R Reattach if possible, otherwise start a new session.
-s shell Shell to execute rather than $SHELL.
-S sockname Name this session <pid>.sockname instead of <pid>.<tty>.<host>.
-t title Set title. (window’s name).
-T term Use term as $TERM for windows, rather than „screen“.
-U Tell screen to use UTF-8 encoding.
-v Print „Screen version 4.00.03 (FAU) 23-Oct-06“.
-wipe Do nothing, just clean up SockDir.
-x Attach to a not detached screen. (Multi display mode).
-X Execute <cmd> as a screen command in the specified session.