=over =item chdir EXPR X X X =item chdir FILEHANDLE =item chdir DIRHANDLE =item chdir Changes the working directory to EXPR, if possible. If EXPR is omitted, changes to the directory specified by C<$ENV{HOME}>, if set; if not, changes to the directory specified by C<$ENV{LOGDIR}>. (Under VMS, the variable C<$ENV{SYS$LOGIN}> is also checked, and used if it is set.) If neither is set, C does nothing. It returns true upon success, false otherwise. See the example under C. On systems that support fchdir, you might pass a file handle or directory handle as argument. On systems that don't support fchdir, passing handles produces a fatal error at run time. =back