xterm:tldr:a4ccf

The command "xterm -bg ${darkblue} -fg ${yellow}" is used to run the xterm program with specific background and foreground colors.

• "xterm" is a terminal emulator for the X Window System. It allows you to run and interact with text-based applications within a graphical environment.
• "-bg" is an option used to set the background color of the xterm window.
• "${darkblue}" is a placeholder that suggests the value of the dark blue color. It could be a specific hexadecimal color code (e.g., #00008b) or a predefined color name.
• "-fg" is an option used to set the foreground color of the text displayed in the xterm window.
• "${yellow}" is a placeholder that suggests the value of the yellow color. Similar to the previous placeholder, it can be a hexadecimal color code (e.g., #ffff00) or a predefined color name.

By running this command, an xterm window with a dark blue background and yellow text color will be opened.