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Black Box’s
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.
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.htm
l
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
