Directory Manipulation 

The CD and DIR commands are used the most.

   DOS COMMAND    WHAT IT DOES

    CD            change which directory is the current directory.
    CHDIR         same as CD.
    DIR           display the filenames in a directory.
    MD            create a new directory that didn't exist before.
    MKDIR         same as CD.
    RD            delete a directory.
    RMDIR         same as RD.
