System Administration Guide: Advanced Administration

How to View the Status of a TTY Port Service

Use the pmadm command as shown to list the status of a TTY port, or all the ports associated with a port monitor.

To list one service of a port monitor, type the following:


# pmadm -l -p mbmon -s a

-l

Lists service information. 

-p

Specifies the pmtag mbmon as the port monitor tag.

-s

Specifies the svctag a as the port monitor service tag.

To list all services of all port monitors, type the following:


# pmadm -l

-l

Lists service information 

To list all services of a port monitor, type the following:


# pmadm -l -p mbmon

-l

Lists service information 

-p

Specifies the pmtag mbmon as the port monitor tag

Example—Viewing the Status of a TTY Port Monitor Service


# pmadm -l -p mbmon
PMTAG  PMTYPE  SVCTAG FLAGS ID    <PMSPECIFIC> 
mbmon  ttymon  a      -     root  /dev/term/a - - /usr/bin/login - contty
ldterm,ttcompat login:  Terminal disabled - y  #

mbmon

Identifies the port monitor name, mbmon, set by using the pmadm -p command.

ttymon

Identifies the port monitor type, ttymon.

a

Indicates the service tag value set by using the pmadm -s command.

-

Identifies whether the following flags are set by using the pmadm -f command:

x, which means do not enable the service;

u, which means create a utmpx entry for the service. No flags are set in this example.

root

Identifies the ID assigned to the service when its started. This value is set by using the pmadm -i command.

<PMSPECIFIC> Information

 

/dev/term/a

Indicates the TTY port pathname set by using the ttyadm -d command.

-

Indicates whether the following flags are set by using the ttyadm -c -b -h -I -r command:

c, sets the connect on carrier flag for the port

b, sets the port as bidirectional, allowing both incoming and outgoing traffic

h, suppresses an automatic hangup immediately after an incoming call is received

I, initializes the port

r, forces ttymon to wait until it receives a character from the port before it prints the login: message.

-

Indicates a value set by using the ttyadm -r option. This option determines when ttymon displays a prompt after receiving data from a port. If count is 0, ttymon will wait until it receives any character. If count is greater than 0, ttymon will wait until count new lines have been received. No value is set in this example.

/usr/bin/login

Identifies the full pathname of the service to be invoked when a connected is received. This value is set by using ttyadm -s command.

-

Identifies the ttyadm -t command's (timeout) value. This option specifies that ttymon should close a port if the open on the port succeeds, and no input data is received in timeout seconds. There is no timeout value in this example.

contty

Identifies the TTY label in the /etc/ttydefs file. This value is set by using the ttyadm -l command.

ldterm,ttcompat

Identifies the STREAMS modules to be pushed. These modules are set by using the ttyadmin -m command.

login: Terminal disabled

Identifies an inactive message to be displayed when the port is disabled. This message is set by using the ttyadm -i command.

tvi925

Identifies the terminal type, if set, by using the ttyadm -Tcommand. The terminal type is tvi925 in this example.

y

Identifies the software carrier value set by using the ttyadm -S command; n will turn software carrier off, y will turn software carrier on. Software carrier is turned on in this example.

#

Identifies any comment specified with the pmadm -y command. (There is no comment in this example).