Example

> system("pwd")
/home/bradh
        0
> cd("rlab")
        1
> system("pwd")
/home/bradh/rlab
        0
> cd("../archived")
        1
> system("pwd")
/home/bradh/archived
        0
> // This is a sym-link on my machine
> cd("/linux")
        1
> system("pwd")
/usr/src/linux
        0