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mkfifo(1)                 BSD General Commands Manual                mkfifo(1)


NAME

     mkfifo -- make fifos


SYNOPSIS

     mkfifo [-m mode] fifo_name ...


DESCRIPTION

     mkfifo creates the fifos requested, in the order specified.  By default,
     the resulting fifos have mode 0666 (rw-rw-rw-), limited by the current
     umask(2).

     The options are as follows:

     -m      Set the file permission bits of newly-created fifos to mode,
             without respect to the current umask.

             The mode is specified as in chmod(1).  In symbolic mode strings,
             the ``+'' and ``-'' operators are interpreted relative to an
             assumed initial mode of ``a=rw''

     mkfifo requires write permission in the parent directory.

     mkfifo exits with 0 if successful, and with >0 if an error occurred.


LEGACY DESCRIPTION

     In legacy mode, the fifo's file permission bits are always limited by the
     current umask.

     For more information about legacy mode, see compat(5).


SEE ALSO

     mkdir(1), rm(1), umask(1), mkfifo(2), umask(2), compat(5), mknod(8)


STANDARDS

     The mkfifo utility is expected to be IEEE Std 1003.2-1992 (``POSIX.2'')
     compliant.


HISTORY

     mkfifo command appeared in 4.4BSD.

4.4BSD                          January 5, 1994                         4.4BSD

Mac OS X 10.6 - Generated Thu Sep 17 20:08:08 CDT 2009