Linux Screen: Install and Master Terminal Multiplexing

Understanding the 'screen' Terminal Multiplexer

• 💡 Screen is a terminal multiplexer for Linux that allows you to run multiple terminal sessions within a single terminal window.
• 🚀 It's highly useful for managing long-running processes, keeping jobs active after logout, and organizing background tasks on servers.

Installing and Verifying 'screen'

• 🛠️ To install screen, open your terminal and use the command: sudo apt install screen.
• ✅ After installation, you can verify the version with screen --version.

Managing Screen Sessions and Windows

• 🚀 Start a new screen session by simply typing screen in the terminal.
• 💡 To create a new window within an active screen session, use the prefix key (Ctrl+a) followed by c.
• 🔀 Switch between windows using the prefix key (Ctrl+a) followed by p for the previous window or n for the next window.
• 📋 View a list of all open windows by pressing Ctrl+a, then " (double quote), and navigating with arrow keys.

Detaching and Reattaching Sessions

• 📌 To detach from a screen session and return to the normal terminal, press Ctrl+a, then d.
• 🔍 You can list all active, detached screen sessions using the command screen -ls.
• ↩️ To reattach to a detached session, use screen -r (if only one session exists) or screen -r <session_id_or_name>.

Naming and Terminating Sessions

• 🏷️ Name a screen session for easier identification by using screen -S <session_name> (e.g., screen -S demo).
• 🚪 To exit and terminate a screen session, type exit within the session or press Ctrl+d.
• 🧹 After exiting, screen -ls will show no active sessions.