|| FreeBSD General Commands Manual
|| [ -m mode] fifo_name ...
utility creates the fifos requested, in the order specified.
The options are as follows:
Set the file permission bits of the created fifos to the specified mode, ignoring the
umask(2) of the calling process. The
mode argument takes any format that can be specified to the
chmod(1) command. If a symbolic mode is specified, the op symbols ‘
+’ (plus) and ‘
-’ (hyphen) are interpreted relative to an assumed initial mode of “
a=rw” (read and write permissions for all).
If the -m option is not specified, fifos are created with mode
0666 modified by the umask(2) of the calling process. The mkfifo utility requires write permission in the parent directory.
EXIT STATUS The
mkfifo utility exits 0 on success, and >0 if an error occurs.
mkfifo utility is expected to be IEEE Std 1003.2 (“POSIX.2”) compliant.
mkfifo command appeared in