Advanced Portmanager; Portmanager Commands - Tripp Lite B092-016 Owner's Manual

Chapter 15: Advanced Configuration

15.2 Advanced Portmanager

The portmanger program manages the Console Server serial ports. It routes network connection to serial ports, checks
permissions, and monitors and logs all the data flowing to/from the ports.

15.2.1 Portmanager commands

pmshell
The pmshell command acts similar to the standard tip or cu commands, but all serial port access is directed via the
portmanager.
Example: To connect to port 8 via the portmanager:
# pmshell -l port08
pmshell Commands:
Once connected, the pmshell command supports a subset of the '~' escape commands that tip/cu support. For SSH you
must prefix the escape with an additional '~' command (i.e. use the '~~' escape)
Send Break: Typing the character sequence '~b' will generate a BREAK on the serial port (if you're doing this over ssh,
you'll need to type "~~b")
History: Typing the character sequence '~h' will generate a history on the serial port.
Quit pmshell: Typing the character sequence '~.' will exit from pmshell.
Set RTS to 1 run the command: pmshell --rts=1
Show all signals: # pmshell –signals
DSR=1 DTR=1 CTS=1 RTS=1 DCD=0
Read a line of text from the serial port: # pmshell –getline
pmchat
The pmchat command acts similar to the standard chat command, but all serial port access is directed via the portmanager.
Example: To run a chat script via the portmanager:
# pmchat -v -f /etc/config/scripts/port08.chat < /dev/port08
For more information on using chat (and pmchat) you should consult the UNIX man pages:
http://techpubs.sgi.com/library/tpl/cgibin/getdoc.cgi?coll=linux&db=man&fname=/usr/share/catman/man8/chat.8.html
pmusers
The pmusers command is used to query the portmanager for active user sessions.
Example: To detect which users are currently active on which serial ports:
# pmusers
This command will output nothing if there are no active users currently connected to any ports, otherwise it will respond with a
sorted list of usernames per active port:
Port 1:
user1
user2
Port 2:
user1
Port 8:
user2
The above output indicates that a user named "user1" is actively connected to ports 1 and 2, while "user2" is connected to
both ports 1 and 8
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