CD(1)
NAME
cd − change working directory
USAGE
cd directory
DESCRIPTION
Cd changes the current working directory to a new working directory specified by directory. The process must have execute (search) permission in directory.
Because a new process is created to execute each command, cd is ineffective if used as a normal command. Therefore, it is the Bourne or C Shell that recognizes and executes cd. If you are using csh (1), you may specify a list of directories in which directory is to be sought as a subdirectory, if it is not a subdirectory of the current directory. See the description of the cdpath variable in csh (1).