Question

When you want the system to execute a command, you almost never have to give full path to that command. How can it be achieved?

Answer 1

Explanation:

A path, which is the way you need to follow in the tree structure to reach a given file, can be described as starting from the trunk of the tree (the / or root directory).

Answer 2

The path environment takes care of the mentioned situation. This path variable will list all of the directories in the system where such executable files are detected.  

Explanation:

• Thus this variable saves the user in memorizing and typing the locations of all commands. Finally echo command is used for displaying the search results in the console.  

• The only disadvantage in using this variable is, it might stop/hang while searching for invalid locations.

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