Pwd

The pwd command (print working directory) is used to print the name of current working directory, if the shell prompt does not show this, the user can find their place in the directory tree. It is found in the Unix family of operating systems and other flavors as well. The DOS equivalent is "cd" with no arguments.

It is a command which is sometimes included built into certain shellss such as sh, and bash. It can be implemented easily with the POSIX C functions getcwd() and/or getwd().