#Keyboard Shortcuts

Default cmux keyboard shortcuts. Every cmux-owned shortcut can be changed in Settings or ~/.config/cmux/cmux.json, including two-step chords.

Resize the focused pane with Ctrl+Shift+H/J/K/L (left/down/up/right). Hold a key to keep resizing. Change the bindings and Pane Resize Step in Settings → Keyboard Shortcuts. The step is also configurable with app.paneResizeStepPixels in cmux.json (1–200, default 20).

#Shortcut chords

cmux supports two-step shortcut chords in ~/.config/cmux/cmux.json. For the full configuration schema, see the configuration docs.

{
  "shortcuts": {
    "bindings": {
      "newSurface": ["ctrl+b", "c"],
      "showNotifications": ["ctrl+b", "i"],
      "toggleSidebar": "cmd+b",
      "toggleFileExplorer": "cmd+opt+b",
      "splitRight": "",
      "commandPalettePrevious": null
    }
  }
}

• Use a plain string for a one-step shortcut.
• Use a two-item array for a chord. The first item is the prefix stroke, the second is the key that follows it.
• Each item uses the same syntax as regular bindings, for example cmd+b, ctrl+b, shift+/, or ctrl+1.