cat Using Screen in the Terminal.md

What is Screen?

Screen is a terminal multiplexer that allows you to run multiple terminal sessions within a single window. It’s particularly useful for:

• Running long-running processes that need to survive disconnections
• Managing multiple terminal sessions from a single SSH connection
• Detaching and reattaching to sessions later

Basic Commands

• screen - Start a new session
• screen -S name - Start a named session
• screen -ls - List all sessions
• screen -r - Reattach to a session
• screen -d -r - Detach and reattach to a session

Detaching

Use CTRL + A, then D to detach from a screen session, then you can use screen -r to reattach later

Multiple screens

Use CTRL + A, then C to create another screen. Use CTRL + A, then A to switch between screens. Use CTRL + A, then W to show which screens are active.

Scrolling in Screen

By default, scrolling with your mouse or Page Up/Down doesn’t work in screen. Here are two ways to scroll:

Method 1: Copy Mode

Use CTRL + A, then Escape to enter “Copy mode”. After that, you can move your cursor around using the arrow keys or Page Up/Down. To exit copy mode, press Escape again.

Method 2: Enable Mouse Scrollwheel

Add this to your ~/.screenrc to enable mouse wheel scrolling:

echo 'termcapinfo xterm* ti@:te@' >> ~/.screenrc

This configures screen to allow your terminal’s native scrolling behavior.