xmodmap:tldr:37e15
The command "xmodmap" is used in Linux and Unix-like operating systems to remap keycodes and modify the keyboard layout. The command "xmodmap ${filename}" is a specific usage of this command, where ${filename} is a placeholder for the name of a file.
This command reads keymap expressions from the specified file and sets the keyboard mappings accordingly. The file contains a series of mappings that define what each key on the keyboard should produce. These mappings can be used to change the behavior of certain keys, create custom key combinations, or modify the layout to match different keyboard configurations.
When the "xmodmap" command is executed with the specified file, it applies the keymap expressions within the file to the current keyboard configuration. This allows users to customize their keyboard layout according to their preferences and needs.