xref: /freebsd/usr.bin/mkfifo/mkfifo.1 (revision 3a92d97ff0f22d21608e1c19b83104c4937523b6)
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31.\"     @(#)mkfifo.1	8.2 (Berkeley) 1/5/94
32.\" $FreeBSD$
33.\"
34.Dd January 5, 1994
35.Dt MKFIFO 1
36.Os
37.Sh NAME
38.Nm mkfifo
39.Nd make fifos
40.Sh SYNOPSIS
41.Nm
42.Op Fl m Ar mode
43.Ar fifo_name ...
44.Sh DESCRIPTION
45The
46.Nm
47utility creates the fifos requested, in the order specified.
48.Pp
49The options are as follows:
50.Bl -tag -width indent
51.It Fl m
52Set the file permission bits of the created fifos to the
53specified mode, ignoring the
54.Xr umask 2
55of the calling process.
56The
57.Ar mode
58argument takes any format that can be specified to the
59.Xr chmod 1
60command.
61If a symbolic mode is specified, the op symbols
62.Ql +
63(plus) and
64.Ql -
65(hyphen) are interpreted relative to an assumed initial mode of
66.Dq Li a=rw
67(read and write permissions for all).
68.El
69.Pp
70If the
71.Fl m
72option is not specified, fifos are created with mode
73.Li 0666
74modified by the
75.Xr umask 2
76of the calling process.
77The
78.Nm
79utility requires write permission in the parent directory.
80.Sh EXIT STATUS
81.Ex -std
82.Sh SEE ALSO
83.Xr mkdir 1 ,
84.Xr rm 1 ,
85.Xr mkfifo 2 ,
86.Xr mknod 2 ,
87.Xr mknod 8
88.Sh STANDARDS
89The
90.Nm
91utility is expected to be
92.St -p1003.2
93compliant.
94.Sh HISTORY
95The
96.Nm
97command appeared in
98.Bx 4.4 .
99