Whether or not you are a seasoned Unix professional or simply getting began, understanding test the trail in Unix is a necessary talent. The trail is an inventory of directories that the shell searches while you enter a command. By understanding test and modify the trail, you’ll be able to be sure that you are at all times capable of finding and execute the instructions you want.
There are a number of methods to test the trail in Unix. One widespread technique is to make use of the echo command. To do that, merely kind the next command right into a terminal window: