The cd command stands for ``change
directory.'' You use it to move between directories on a
system. If the directory has a ``/'' in
front of it, the directory change will occur
``absolutely'' without a
``/'' the directory change will occur
relatively.
The pwd shows your ``present working
directory.'' If youre not sure where you
are on a system, use pwd.
Example:
[jdpoisso@legio data]$ cd /tmp [jdpoisso@legio tmp]$ pwd /tmp [jdpoisso@legio tmp]$ cd ~ [jdpoisso@legio ~]$ pwd /home/jdpoisso [jdpoisso@legio ~]$ cd data [jdpoisso@legio data]$ pwd /home/jdpoisso/data [jdpoisso@legio data]$