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author | julian <julian@FreeBSD.org> | 2001-07-08 04:35:21 +0000 |
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committer | julian <julian@FreeBSD.org> | 2001-07-08 04:35:21 +0000 |
commit | ae2d77610dfae2ccd25a5715d69efa9184600888 (patch) | |
tree | 4788b076b4d2bb751ebdd227468076d49f9bdb4e /share | |
parent | ce318288f2561a4c770ae6098a6af7b86405c1b2 (diff) | |
download | FreeBSD-src-ae2d77610dfae2ccd25a5715d69efa9184600888.zip FreeBSD-src-ae2d77610dfae2ccd25a5715d69efa9184600888.tar.gz |
Add a brief manpage (cribbed form pty.4) about the null-modem
driver (nmdm(4)).
Diffstat (limited to 'share')
-rw-r--r-- | share/man/man4/nmdm.4 | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/share/man/man4/nmdm.4 b/share/man/man4/nmdm.4 new file mode 100644 index 0000000..1fb8d0e --- /dev/null +++ b/share/man/man4/nmdm.4 @@ -0,0 +1,66 @@ +.\" Copyright (c) 2001 +.\" The FreeBSD Project +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd July 7, 2001 +.Dt NMDM 4 +.Os FreeBSD 5.0 +.Sh NAME +.Nm nmdm +.Nd nullmodem terminal driver +.Sh SYNOPSIS +.Cd "device nmdm" +.Sh DESCRIPTION +The +.Nm +driver provides support for a device-pair termed a +.Em null modem pair . +A null modem pair is a pair of character devices. +Each device provides to a process an interface identical +to that described in +.Xr tty 4 . +However, whereas most other devices which provide the +interface described in +.Xr tty 4 +have a hardware device of some sort behind them, the nmdm +device has, instead, another process manipulating +it through the other half of the pair. +That is, anything written on the first device is +given to the second device as input and anything written +on the second device is presented as input on the first +device. +.Pp +.Sh FILES +.Bl -tag -width /dev/nmdm[N][AB] -compact +.It Pa /dev/nmdm[N][AB] +nullmodem device nodes. +Where the A node has a matching B node. +.El +.Sh DIAGNOSTICS +None. +.Sh SEE ALSO +.Xr tty 4 +.Sh HISTORY +The +.Nm +driver appeared in +.Fx 5.0 . |