1. Name

cd - change directory

2. Frequently used options

-     change to previous directory   

3. Examples

In most of the unix systems there are two most frequently used commands, one is "ls" and the other is "cd". Command "cd" allows a user to navigate through file system's directories. For example to navigate to /etc/ directory simply enter:

$ cd /etc 

To navigate to a previous directory user can enter:

$ cd -  

By entering cd command without any options and arguments user can navigate to home directory as specified in /etc/passwd file:

$ cd 

4. Relative Path

5. Absolute Path