Screen Command Cheatsheet

THE PRACTICAL GUIDE · NORMANDIN SYSTEMS

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Screen Command Cheatsheet summarizes common GNU Screen session and window operations. A terminal multiplexer can keep command sessions organized and allow detaching from an interactive display while the session continues. Detaching a session differs from ending its processes, so it is useful to understand that distinction before managing long-running work. A cheatsheet works best as a memory aid while you practice a concrete task. Read the command or syntax together with its arguments, placeholders, and surrounding context. Similar-looking options can have very different meanings, and an example written for one platform or version may need adjustment elsewhere. Keep the reference beside a small test case, use read-only examples first when possible, and check the relevant help output before applying an unfamiliar command to valuable files or a running service.

Guide updated October 13, 2026

How to use this tool

1. Identify the operation you want to perform and find the matching section of the reference. Read the whole example before copying any part of it.
2. List existing sessions, identify the intended one, and practice attach or detach operations in a disposable session.
3. Review the example below and compare its expected behavior with a small sample of your own input before continuing.
4. Try the adapted example on a small test case, compare the result with the explanation, and save the command with a note about the context in which it works.

SEE IT IN PRACTICE

A worked example

screen -ls

A listing of available Screen sessions

The session identifier helps distinguish the intended session from another similarly named terminal workflow.

Detach does not mean terminate

A detached Screen session can keep its terminal processes running without an attached interactive display. Exiting a shell or terminating a session is a different action and may stop the work inside it. Learn that distinction using a disposable session before relying on Screen for a long-running task. List sessions and identify the intended target before attaching, particularly when several sessions have similar names or were created at different times.

Persistent sessions still need operational context

A process continuing in a session is not necessarily healthy, and terminal persistence is not a replacement for service supervision or backups. Inspect the application's own output and state when returning to a session. Keybindings can be customized, so check the active configuration when a reference shortcut behaves differently. Keep commands and session names meaningful enough that you can identify their purpose later. This reduces the chance of sending an instruction to the wrong shell after reconnecting.

When this tool is useful

• Find a Screen session command
• Understand detach versus exit
• Organize a persistent terminal workflow

Tips for a better result

• Confirm the session identifier and understand whether the next action attaches, detaches, creates, or terminates a session.
• Replace example paths, identifiers, and names deliberately. Copying a reference command unchanged can target a different file, branch, service, or environment from the one you intended.
• Keep the source and the settings used for this result together. That makes a later comparison or correction easier, especially when another person needs to reproduce the same outcome.

Frequently asked questions