i3msg

i3msg is a command-line utility used to send messages to the i3 window manager. i3 is a tiling window manager that is highly configurable and known for its efficiency. i3msg allows users to interact with and control i3 programmatically or through shell scripts.

The primary function of i3msg is to send commands to the i3 IPC (Inter-Process Communication) interface. This interface allows external programs to receive information about the current i3 layout and to send instructions to i3, such as moving windows, changing focus, or executing commands. i3msg acts as a bridge, translating user-initiated commands into the format i3 expects.

Common uses for i3msg include scripting complex window management workflows, creating custom keybindings, and integrating i3 with other applications. For example, a user might write a script that uses i3msg to arrange multiple windows in a specific layout when a particular application is launched. Another common use is to retrieve information about the current workspace or focused window, which can then be displayed by other tools.

The syntax of i3msg typically involves specifying the target workspace or window and the command to be executed. For instance, a command might look like "i3-msg '[con_id="12345678"] move container to workspace output HDMI-1'". This demonstrates the ability to target specific containers and manipulate them according to desired configurations. i3msg is an essential tool for users who wish to customize and automate their i3 window management experience beyond basic keyboard shortcuts.