Changes

Before learning to create directories, it is important to understand what represents an appropriate directory filename. Some of the basic file-naming rules are:* Unix/Linux is characters are case sensitive!. It is recommended to be consistent (e.g. use all lowercase letters)* Adopt a consistent file directory naming scheme – this will help you find to navigate within your files directory structure later* Make your file and directory names meaningful* Avoid non -alphanumeric characters, as they may have a special meaning to the system that will make your work more difficultwhen changing to directories, etc.* Avoid using spaces in file directory names – consider periods, hyphens, and underscores insteadFeel free to use file name extensions to describe a file's purpose