PATH is an environment variable that is usually put in your .profile, which indicates the directories that the shell will search to find the command that you typed in. Here is what you would typically see:
$ echo $PATH /bin:/usr/bin:/usr/local/bin:/home/testuser:.
The pwd (print-working-directory) command will display the output of your current working directory. It is a build-in command on many shells.
This was first published in May 2007