MKFIFO(1)               FreeBSD General Commands Manual              MKFIFO(1)

NAME
     mkfifo - make fifos

SYNOPSIS
     mkfifo [-m mode] fifo_name ...

DESCRIPTION
     The mkfifo utility creates the fifos requested, in the order specified.

     The options are as follows:

     -m      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.

SEE ALSO
     mkdir(1), rm(1), mkfifo(2), mknod(2), mknod(8)

STANDARDS
     The mkfifo utility is expected to be IEEE Std 1003.2 ("POSIX.2")
     compliant.

HISTORY
     The mkfifo command appeared in 4.4BSD.

FreeBSD 13.1-RELEASE-p6         January 5, 1994        FreeBSD 13.1-RELEASE-p6