ftype:tldr:386f0

The command "ftype" is a Windows command that is used to display or modify the file type associations in the Windows registry.

The "${file_type}" part in the command is a placeholder or variable that needs to be replaced with an actual file extension or file type. For example, if you want to know the file type association for a .txt file, you would replace "${file_type}" with ".txt" in the command.

When executed, the command "ftype ${file_type}" will display the current file type association for the specified file type. It will typically show the program or command that is associated with opening or running files of that specific type.

For instance, if you run the command "ftype .txt", it will show the program that is associated with opening .txt files, such as "C:\Windows\System32\Notepad.exe".

Overall, "ftype ${file_type}" is a command that helps in managing and viewing the file type associations in Windows.