consadm man page on Solaris

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consadm(1m)		System Administration Commands		   consadm(1m)

NAME
       consadm - select or display devices used as auxiliary console devices

SYNOPSIS
       /usr/sbin/consadm

       /usr/sbin/consadm [-a device...] [-p]

       /usr/sbin/consadm [-d device...] [-p]

       /usr/sbin/consadm [-p]

DESCRIPTION
       consadm	selects the hardware device or devices to be used as auxiliary
       console devices, or displays the current device.	 Only  superusers  are
       allowed to make or display auxiliary console device selections.

       Auxiliary  console  devices receive copies of console messages, and can
       be used as the console during single user  mode.	 In  particular,  they
       receive	kernel	messages  and  messages	 directed  to  /dev/sysmsg. On
       Solaris x86 based systems they can also be used	for  interaction  with
       the bootstrap.

       By  default, selecting a display device to be used as an auxiliary con‐
       sole device selects that device for the duration the system remains up.
       If  the administrator needs the selection to persist across reboots the
       -p option can be specified.

       consadm runs a daemon in the background, monitoring  auxiliary  console
       devices.	 Any devices that are disconnected (hang up, lose carrier) are
       removed from the auxiliary console device list,	though	not  from  the
       persistent  list. While auxiliary console devices may have been removed
       from the device list receiving copies of console messages,  those  mes‐
       sages  will  always  continue  to  be  displayed by the default console
       device.

       The daemon will not run if it finds there are not any auxiliary devices
       configured  to  monitor.	 Likewise, after the last auxiliary console is
       removed, the daemon will shut itself down. Therefore  the  daemon  per‐
       sists for only as long as auxiliary console devices remain active.

       See  eeprom(1M)	for  instructions  on  assigning  an auxiliary console
       device as the system console.

OPTIONS
       The following options are supported:

       -a device       Adds device to the list of auxiliary  console  devices.
		       Specify	device	as  the	 path  name  to	 the device or
		       devices to be added to  the  auxiliary  console	device
		       list.

       -d device       Removes	device	from  the  list	 of  auxiliary console
		       devices. Specify device as the path name to the	device
		       or  devices  to	be  removed from the auxiliary console
		       device list.

       -p	       Prints the list of auxiliary consoles that will be aux‐
		       iliary across reboots.

		       When  invoked  with  the	 -a  or -d options , tells the
		       application to make the change persist across reboot.

EXAMPLES
       Example 1: Adding to the list of devices that will receive console mes‐
       sages

       The following command adds /dev/term/a to the list of devices that will
       receive console messages.

       example# consadm -a /dev/term/a

       Example 2: Removing from the list of devices that will receive  console
       messages

       The following command removes /dev/term/a from the list of devices that
       will receive console messages. This includes removal from  the  persis‐
       tent list.

       example# consadm -d -p /dev/term/a

       Example	3:  Printing the list of devices selected as auxiliary console
       devices

       The following command prints the name or names of the device or devices
       currently selected as auxiliary console devices.

       example# consadm

ENVIRONMENT VARIABLES
       See  environ(5) for descriptions of the following environment variables
       that affect  the	 execution  of	consadm:  LC_CTYPE,  LC_MESSAGES,  and
       NLSPATH.

EXIT STATUS
       The following exit values are returned:

       0	       Successful completion.

       >0	       An error occurred.

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

       ┌─────────────────────────────┬─────────────────────────────┐
       │ATTRIBUTE TYPE		     │ATTRIBUTE VALUE		   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Availability		     │SUNWcsu			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Stability Level		     │Evolving			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       svcs(1),	 eeprom(1M),  svcadm(1M),  syslogd(1M),	 kadb(1M), environ(5),
       attributes(5), smf(5), sysmsg(7d), console(7d)

NOTES
       Auxiliary console devices are not usable for kadb or firmware  I/O,  do
       not  receive  panic  messages,  and  do	not receive output directed to
       /dev/console.

       The consadm service is managed  by  the	service	 management  facility,
       smf(5), under the service identifier:

       svc:/system/consadm

       Administrative actions on this service, such as enabling, disabling, or
       requesting restart, can be performed using  svcadm(1M).	The  service's
       status can be queried using the svcs(1) command.

SunOS 5.10			  27 Oct 2004			   consadm(1m)
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