All variations of Unix come with certain basic commands that allow the user to navigate the file system, manipulate files, and execute programs. In order to navigate through a Unix system, it is important to understand the structure of the file system. The Unix file system has many built-in features that control user access to files and directories. Editing with vi vi is a widely used Unix text editor that can facilitate the editing of configuration, script, or any other type of text file. The shell is a program that accepts commands from the user.
Users can customize their workspace by specifying shell and environment variables.
Unix Tools Unix systems have a number of tools ranging from file viewing to electronic mail. Certain tools can be combined to accomplish additional tasks.