diff --git a/sbin/conscontrol/conscontrol.8 b/sbin/conscontrol/conscontrol.8 index ecd9392a35e5..ff3379285b27 100644 --- a/sbin/conscontrol/conscontrol.8 +++ b/sbin/conscontrol/conscontrol.8 @@ -33,31 +33,39 @@ .Nd control physical console devices .Sh SYNOPSIS .Nm -.Op list +.Op Cm list .Nm -.Ic mute -.Ar on|off +.Cm mute on | off .Nm -.Ic add|delete +.Cm add | delete .Ar console .Sh DESCRIPTION -.Nm Conscontrol -is used to examine and modify the physical devices which back +The +.Nm +utility is used to examine and modify the physical devices which back the virtual console console devices. -If no arguments are specified +If no arguments (or only the -.Ar list -argument), +.Cm list +command) +are specified, the current console settings are shown. .Pp There are two types of logical consoles; a high level console which -is represented by /dev/console, and a low level console. -The low level console is used for kernel printfs and debugger support, -while the high level console is used by user programs like syslog. -Multiple device support is implemented only for the low level console, +is represented by +.Pa /dev/console , and a low level console. +The low level console is used for kernel +.Xr printf 9 +and +.Xr ddb 4 +debugger support, +while the high level console is used by user programs like +.Xr syslogd 8 . +Multiple device support is implemented only for the low level console; the high level console is set to the first device in the console list. .Pp Multiple console support may be invoked by passing the kernel the +.\" XXX The Fl macro doesn't really apply here -D flag from the boot loader, or by using .Nm @@ -65,23 +73,24 @@ to change the list of console devices after the system has booted. .Pp The following options are available: .Bl -tag -width indent -.It Cm add|delete Ar console +.It Cm add | delete Ar console Add or delete a physical device from the logical console. The device must support low-level console operations. Adding a device will place it at the front of the list of console devices; the first device is used for the high level console. -.It Cm mute Ar on|off -Change the state of the console muting. +.It Cm mute Cm on | off +Change the state of console muting. +All console output is suppressed when console muting is on. .El .Sh SEE ALSO -.Xr boot 8 , -.Xr loader 8 , .Xr sio 4 , -.Xr syscons 4 +.Xr syscons 4 , +.Xr boot 8 , +.Xr loader 8 .Sh HISTORY The .Nm command first appeared in -.Fx 4.5 . +.Fx 5.0 . .Sh AUTHORS .An Jonathan Lemon