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NMDM(4) FreeBSD Kernel Interfaces Manual NMDM(4) NAME nmdm -- nullmodem terminal driver SYNOPSIS device nmdm DESCRIPTION The nmdm driver provides support for a device-pair termed a 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 tty(4). However, whereas most other devices which provide the interface described in 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. FILES /dev/nmdmN[AB] nullmodem device nodes. Where the A node has a match- ing B node. DIAGNOSTICS None. SEE ALSO tty(4) HISTORY The nmdm driver first appeared in FreeBSD 4.4. FreeBSD 11.1 July 7, 2001 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | FILES | DIAGNOSTICS | SEE ALSO | HISTORY
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