screen

Overview

The screen command is a full-screen window manager that multiplexes a physical terminal between several processes. It allows you to run multiple terminal sessions inside a single terminal window.

Syntax

screen [options] [command [args]]

Common Options

Option	Description
`-S name`	Set session name
`-r [pid]`	Reattach session
`-d`	Detach session
`-D`	Detach and logout
`-R`	Reattach if exists
`-x`	Attach to running
`-ls`	List sessions
`-L`	Enable logging
`-m`	Ignore $STY
`-c file`	Config file
`-v`	Version info

Key Bindings

Command	Action
`Ctrl-a c`	Create window
`Ctrl-a n`	Next window
`Ctrl-a p`	Previous window
`Ctrl-a d`	Detach session
`Ctrl-a k`	Kill window
`Ctrl-a ?`	Help screen
`Ctrl-a "`	Window list
`Ctrl-a A`	Rename window
`Ctrl-a S`	Split horizontal
`Ctrl-a \|`	Split vertical

Key Use Cases

Session management
Remote work
Process monitoring
Multiple terminals
Long-running tasks

Examples with Explanations

Example 1: New Session

screen -S mysession

Create named session

Example 2: Reattach

screen -r mysession

Reattach to session

Example 3: List Sessions

screen -ls

Show running sessions

Common Usage Patterns

Start named:
```
screen -S name
```
Detach/reattach:
```
Ctrl-a d
screen -r
```
Kill session:
```
screen -X -S [session] quit
```

Security Considerations

Session access
Multi-user mode
Process isolation
Log security
Remote access

Additional Resources

Best Practices

Name sessions
Use logging
Configure startup
Monitor status
Clean up

Configuration

.screenrc file
Key bindings
Status line
Window setup
Logging options

Troubleshooting

Session issues
Permission problems
Display errors
Key binding conflicts
Resource limits