https://opensource.com/article/17/3/introduction-gnu-screen?sc_cid=70160000001290bAAA

http://aperiodic.net/screen/quick_reference

====== screen Quick Reference ======
basics
| **start** a new screen session with session name 	| screen -S <name> |
| split display vertically 	                        | C-a <nowiki>|</nowiki> |
| create new window 	                                | C-a c            |
| jump to next display region 	                        | C-a tab          |
| detach                       	                        | C-a d            |

more
| list running sessions/screens 	                | screen -ls       |
| attach to session with name 	                        | screen -r <name> |
| **detach** a running session 	                        | screen -d <name> |
| change to last-visited active window                  | C-a C-a (commonly used to flip-flop between two windows) |
| split display horizontally 	                        | C-a S            |
| lock screen           	                        | C-a x            |
| remove all regions but the current one 	        | C-a Q            |