What command is used to show the current directory you are in?

The command used to show the current directory you are in is "pwd," which stands for "print working directory." When executed in a terminal, this command displays the full path of the directory that the user is currently navigating in the filesystem.

Understanding this command is fundamental for Linux users since it helps them to orient themselves within the directory structure, which can be complex.

The other options do not provide the correct functionality: "currentdir" is not a standard command in Unix-like systems, "dir" is typically used in DOS and may not yield the current directory in Linux, and "showdir" is not a recognized Linux command. Thus, "pwd" stands out as the correct and widely accepted command for this purpose.