rofi:tldr:fb9e6

This command is a combination of the printf and rofi commands and is used to create a dynamic menu in Linux.

Here's an explanation of each part of the command:

1. printf command: This command is used to format and print text. In this case, it is printing the choices for the menu.

2. "${Choice1\nChoice2\nChoice3}": Here, ${} is used for variable expansion in bash. The text within the quotes represents the choices that will be printed by printf. \n is the escape sequence for a newline character, so it will create separate lines for each choice.

3. | (pipe symbol): A pipe is used to redirect the output of one command to the input of another command. In this case, it redirects the output of the printf command to the input of the rofi command.

4. rofi command: Rofi is a display popup window with a list of choices where users can select an option. In this command, it is used with the -dmenu flag to create a dynamic menu that displays the choices passed to it via the pipe.

So, when you run this command, printf will produce the list of choices (Choice1, Choice2, and Choice3) and pass it to rofi as input. Rofi will then display these choices in a menu, allowing the user to select one.