dir \- format of directories
.B #include <sys/types.h>
behaves exactly like an ordinary file, save that no
user may write into a directory.
The fact that a file is a directory is indicated by
a bit in the flag word of its i-node entry;
The structure of a directory entry as given in the
By convention, the first two entries in each directory
are for `\fB.\fR' and `\fB..\fR'. The first is an entry for the
directory itself. The second is for the parent
The meaning of `\fB..\fR' is modified for the root directory
of the master file system
same meaning as `\fB.\fR'.