COMMON COMMANDS

ctrl+a ? Displays commands and its defaults (VERY important) 
ctrl+a : Enter to the command prompt of screen 
ctrl+a " Window list 
ctrl+a 0 opens window 0 
ctrl+a A Rename the current window 
ctrl+a a Sends ctrl+a to the current window 
ctrl+a c Create a new window (with shell) 
ctrl+a S Split current region into two regions 
ctrl+a tab Switch the input focus to the next region 
ctrl+a ctrl+a Toggle between current and previous region 
ctrl+a Esc Enter Copy Mode (use enter to select a range of text) 
ctrl+a ] Paste text 
ctrl+a Q Close all regions but the current one 
ctrl+a X Close the current region 
ctrl+a d Detach from the current screen session, and leave it running. Use screen -r to resume



COMMAND PROMPT COMMANDS

ctrl+a :quit Closes all windows and closes screen session
ctrl+a :source ~/.screenrc Reloads screenrc configuration file (can alternatively use /etc/screenrc)

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To create a named session, run screen with the following command: $ screen -S session_name 
To (re)name an existing a session, run the following command while screen is running: ctrl+a :sessionname session_name 
To print a list of pid.tty.host strings identifying your screen sessions: $ screen -list 
To attach to a named screen session, run this command: $ screen -x session_name or $ screen -r session_name