dmenu:tldr:9c4a9

This command is composed of three parts:

1. echo -e "${red}\n${green}\n${blue}":

   • The echo command is used to print or display text in the terminal.
   • The -e option enables the interpretation of backslash escapes, allowing special characters to be represented.
   • "${red}\n${green}\n${blue}" is a string that will be printed to the terminal. It includes three variables: ${red}, ${green}, and ${blue}. These variables are assumed to be defined elsewhere in the script, containing color codes (e.g., ANSI escape codes).
   • \n is a newline character, used here to create line breaks between the different colors.

2. | dmenu:

   • The | (pipe) symbol is used to redirect the output of the preceding command (echo) to the input of the following command (dmenu).
   • dmenu is a dynamic menu for X that lists items and allows the user to select one. It reads input from stdin (standard input) and prints the selected item to stdout (standard output).

3. > ${color-txt}:

   • The > symbol is used to redirect the output of the previous command (dmenu) to a file.
   • ${color-txt} is a filename that will be created or overwritten with the selected item from dmenu. The specific filename would depend on the values of the ${color}, which is assumed to be defined elsewhere in the script.

In summary, this command echoes the color variables (red, green, and blue) with newline characters in between, feeds the output to the dmenu command, and saves the selected item to a file specified by the ${color-txt} variable.