bindkey:tldr:bbfa9

The command "bindkey -M main" is used to configure the key bindings in the main keymap of a shell.

Key bindings determine the actions that are triggered when specific keys or key combinations are pressed in the shell. By default, a shell may have some predefined key bindings, but users may want to customize them to suit their preferences or needs.

The "bindkey" command is used to manage key bindings in shells such as Bash or Zsh. The "-M main" flag specifies the keymap to be modified, in this case, the main keymap. A keymap is a defined set of key bindings that can be switched between, allowing users to have different key bindings for different situations.

So, when you execute the "bindkey -M main" command in your shell, it means you are configuring the key bindings for the main keymap, allowing you to define or modify the actions triggered by specific keys or key combinations in the shell's normal mode of operation.