# Screen screen - screen manager with VT100/ANSI terminal emulation > Screen is a full-screen window manager that multiplexes a physical terminal between several processes (typically interactive shells). Each virtual terminal provides the functions of a DEC VT100 terminal and, in addition, several control functions from the ISO 6429 (ECMA 48, ANSI X3.64) and ISO 2022 standards (e.g. insert/delete line and support for multiple character sets). There is a scrollback history buffer for each virtual terminal and a copy-and-paste mechanism that allows moving text regions between windows. ## Usage * New Session ```bash screen ``` * Detach Session Press `ctrl + a` and `d` immediately after it. * List Session(s) ```bash screen -ls ``` * Attach Session Detached Session can be attached by running `screen -r` but if multiple session(s) are there, run `screen -r `. ***Source:*** [***TecMint***](https://www.tecmint.com/keep-remote-ssh-sessions-running-after-disconnection/) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://til.devjugal.com/linux/ssh/screen.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.