Definition: '/.prettierrc' is a command used to change the color of text in various programming languages, specifically Unix-like operating systems. The key component is 'prettierrc', which contains settings for different colors and fonts. To change text color, you might use 'color [color_name] [text_to_change]' or 'font [font_name] [font_size]'. This command allows specific changes to be made in the terminal window when using various text editors or applications.