How to use GNU screen with SSH sessions

Install GNU screen (Ubuntu based systems):

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install screen

Create simple session:

coil@coil:~$ screen

this creates new screen session, prompt will look like this:

coil@coil:~$

now we can initiate ssh server to some server to perform some task (in this case continuous running of top command)

coil@coil:~$ ssh coil@lb01
coil@lb01:~$ top

detach from a session without interrupting running process:

Ctrl+a+d

and we get back to 

coil@coil:~$ screen
[detached from 2428.pts-7.coil]

List ongoing screen sessions:

coil@coil:~$ screen -ls
There is a screen on:
    2428.pts-7.coil (4.11.2019 20:50:18)    (Detached)
1 Socket in /run/screen/S-coil.
coil@coil:~$

Reattach (-r flag) the session so we can get back to or running process on remote server (2428 is the session ID from the previous command):

coil@coil:~$ screen -r 2428

We are switched to the ongoing session:

top - 20:16:08 up  1:30,  1 user,  load average: 0.00, 0.00, 0.00
Tasks:  99 total,   1 running,  55 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.0 us,  0.3 sy,  0.0 ni, 99.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :   751172 total,   256648 free,   117828 used,   376696 buff/cache
KiB Swap:   590844 total,   581764 free,     9080 used.   515464 avail Mem

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                       
22260 coil      20   0   44508   4008   3420 R  0.3  0.5   0:02.94 top                                           
    1 root      20   0   78036   7304   5264 S  0.0  1.0   0:03.57 systemd                                       
    2 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kthreadd                                      
    4 root       0 -20       0      0      0 I  0.0  0.0   0:00.00 kworker/0:0H

Named screen session:

coil@coil:~$ screen -S my_session
coil@coil:~$ screen -ls
There are screens on:
    2830.my_session (4.11.2019 21:22:34)    (Detached)
    2428.pts-7.coil (4.11.2019 20:50:18)    (Detached)
2 Sockets in /run/screen/S-coil.
coil@coil:~$

we would reattach to named screen session via its ID or a name:

coil@coil:~$ screen -r my_session

coil@coil:~$ screen -r 2830

Screen is ideal for running critical long running processes on remote servers over ssh. This way process does not exit when our ssh session is interrupted.

Source:
https://www.linode.com/docs/networking/ssh/using-gnu-screen-to-manage-persistent-terminal-sessions/