CD(1) BSD Reference Manual CD(1)
cd - change working directory
directory is an absolute or relative pathname which becomes the new work- ing directory. The interpretation of a relative pathname by cd depends on the CDPATH environment variable (see below). For an explanation of the directory hierarchy, see hier(7). Note that cd is implemented as a built-in shell command and not as a stand-alone program. Because each process has its own working directory, a separate cd utility would have no effect (it would change the directory and exit, leaving the working directory in the parent unchanged). Dif- ferent shells may implement cd with features different from those described here. Please consult the manual for your specific shell. The cd command exits 0 on success or >0 if an error occurred.
The following environment variables affect the execution of cd: CDPATH If the directory operand does not begin with a slash ('/') char- acter, and the first component is not dot ('.') or dot-dot ('..'), cd searches for the directory relative to each colon- separated directory named in the CDPATH variable, in the order listed. The new working directory is set to the first matching directory found. An empty string in place of a directory pathname represents the current directory. If the new working directory was derived from CDPATH, it will be printed to the standard out- put. See sh(1) for details. Users of csh(1) use the variable cdpath instead. HOME If cd is invoked without arguments and the HOME environment vari- able exists and contains a directory name, that directory becomes the new working directory. See environ(7) for more information on environment variables.
csh(1), pwd(1), sh(1), chdir(2), environ(7), hier(7)
The cd command is expected to be IEEE Std 1003.2 ("POSIX.2") compatible. MirOS BSD #10-current June 5, 1993 1
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