Alacritty - A fast, cross-platform, OpenGL terminal emulator


Alacritty is a modern terminal emulator that comes with sensible defaults, but allows for extensive configuration. By integrating with other applications, rather than reimplementing their functionality, it manages to provide a flexible set of features with high performance.

Prints help information
Remain open after child process exits
Print all events to stdout
Reduces the level of verbosity (the min level is -qq)
Generates ref test
Increases the level of verbosity (the max level is -vvv)
Prints version information

Defines the window class hint on Linux [default: Alacritty,Alacritty]

When only the general class is passed, instance will be set to the same value.

On Wayland the general class sets the `app_id`, while the instance class is ignored.

Command and args to execute (must be last argument)
Specify alternative configuration file

Alacritty looks for the configuration file at the following paths:
1. $XDG_CONFIG_HOME/alacritty/alacritty.yml
2. $XDG_CONFIG_HOME/alacritty.yml
3. $HOME/.config/alacritty/alacritty.yml
4. $HOME/.alacritty.yml

On Windows, the configuration file is located at %APPDATA%\alacritty\alacritty.yml.

X11 window ID to embed Alacritty within (decimal or hexadecimal with "0x" prefix)
Override configuration file options [example:]
Path for IPC socket creation
Defines the window title [default: Alacritty]
Start the shell in the specified working directory

Available socket messages

See the alacritty github repository at for the full documentation.

Found a bug? Please report it at

•Christian Duerr <>

•Joe Wilm <>

August 2018 alacritty 0.12.1