emacs:tldr:18657

The command "emacs ${filename}" is used to launch the Emacs text editor and open a file with the given filename. Here's an explanation of each part of the command:

• "emacs": This is the command that is used to run the Emacs text editor. If it's not installed on your system, you may need to install it first.
• "${filename}": This is a placeholder for the actual filename you want to open in Emacs. The syntax "${...}" is used to reference a variable or parameter in a command or script. In this case, the value of the "filename" variable will be substituted in place of "${filename}".

To use this command, you need to replace "${filename}" with the actual name of the file you want to open in Emacs. For example, if you want to open a file named "example.txt", the command would be:

emacs example.txt

This will open the "example.txt" file in the Emacs text editor.