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| Chapter 4 The Bourne Shell and Korn Shell |

## cd

    cd [dir]
    cd [ - ]
    cd [ old new ]

With no arguments, change to home directory of user. Otherwise, change working directory to `dir`. If `dir` is a relative pathname but is not in the current directory, then the CDPATH variable is searched. The last two command forms are specific to the Korn shell, where - stands for the previous directory. The third syntax modifies the current directory name by replacing string `old` with `new`, then switches to the resulting directory.

### Example

>     $ pwd
>     /usr/spool/cron
>     $ cd cron uucp	# cd prints the new directory
>     /usr/spool/uucp

Reference: case |  | Reference: continue