15,1.5.4 commonly used DOS commands

DOS command has been basically out of the ordinary user of the stage of history, but still need to master a few common commands, in some cases, to facilitate smoother procedures.

1, cd into the directory path of a path

2, cd .. into the parent directory

3, dir view a list of files and subdirectories in the catalog

4, cls clears the screen

5, up and down the command key history

6, Tab-completion command