# Tmux Windows

**Windows** are tabs within a [[tmux-sessions|session]]. Each window is independent but shares the session state. You can have multiple windows open, switch between them, and each window can contain [[tmux-panes|panes]].

Create and manage windows with these commands:

```bash
$ tmux new-window                   # create window in current session
$ tmux new-window -n build          # create window named "build"
$ tmux list-windows                 # list windows in current session
```

Within a session, use these key bindings (prefix = `Ctrl+B`):

```
prefix c            create new window
prefix n            next window
prefix p            previous window
prefix l            last window (toggle)
prefix w            choose window interactively
prefix ,            rename current window
prefix &            kill current window
prefix 0-9          select window by number
prefix '            choose window by name
```

Windows are numbered starting at 0. When you create a new window, it gets the next available number. You can reference windows in commands like `tmux send-keys -t session:window "command"`. Each window has its own layout of panes, and switching windows also switches the active pane.

Closing the last pane in a window kills the window. If all windows in a session are killed, the session exits.