mojave man page for sysmsg

sysmsg(7D)                                                            Devices                                                           sysmsg(7D)

NAME
       sysmsg - system message routing to console devices

SYNOPSIS
       /dev/sysmsg

DESCRIPTION
       The  file  /dev/sysmsg routes output to a variable set of console devices.  Writes to /dev/sysmsg are always directed to the system console
       /dev/console, and are in addition directed to a set of auxiliary console devices managed by consadm(1M).

       Only root has permission to write to this device.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsr                      |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Stable                       |
       +-----------------------------+-----------------------------+

SEE ALSO
       consadm(1M), syslogd(1M) , attributes(5), console(7D)

SunOS 5.10                                                          13 Oct 1998                                                         sysmsg(7D)