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Operating Systems AIX Discover the program that use serial port (Sherlock Holmes Case) Post 303000237 by bakunin on Friday 7th of July 2017 04:44:21 AM
Old 07-07-2017
A few other ideas:

- there is only a limited number of ttys. Try the fuser command on all of them to find out which process(es) is(are) using it. The examine the found processes.

- if you feel confident enough you can also use kdb (kernel debugger) to examine the processes properties although you will have to find out the details yourself, i don't have the documentation at hand.

- receiving data from a tty means there has to be a physical serial connection to the server. check that and find out the corresponding tty device to further limit the number of devices to examine if you have physical access to the server.

I hope this helps.

bakunin

Last edited by bakunin; 07-08-2017 at 09:07 AM..
This User Gave Thanks to bakunin For This Post:
 

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llogin(1)						      General Commands Manual							 llogin(1)

NAME
llogin - Connects to a LAT service SYNOPSIS
/usr/sbin/llogin -d | service [-p tty] [-H rem_node] [-R rem_port] [-wpassword | -W] OPTIONS
Displays a list of learned services including the node name and rating. Specifies a local LAT tty device (tty) to use to connect to ser- vice. Either SVR4 or BSD tty devices can be specified. However, the tty device must already exist and be available for use. If no tty device is specified, llogin uses any available SVR4 tty device. If no available devices are found, llogin creates an SVR4 LAT tty device for the user. When llogin exits, the created tty device is removed. Specifies a remote host (rem_node) that offers service. This is helpful when more than one host offers a service. Specifies a remote port (rem_port) that offers service. Speci- fies a password for connecting to service when the remote service has password checking enabled. The password is not case sensitive and spaces are not allowed. If you use the -w option, you specify the password on the command line; it is visible. If you use the -W option, you are prompted for the password; it is not echoed (visible). DESCRIPTION
The llogin command enables Tru64 UNIX users to connect to LAT services offered by other nodes in the local area network (LAN). You do not need superuser privileges or node information in order to connect to LAT services. If you do not know what services are known to your local node, use the llogin -d command. If you want to perform simultaneous llogin connections, use the llogin -p command. To make the llogin connection establishment quicker, add the target hostname as a remote service by using the latcp command. EXAMPLES
The following command initiates a connection to service siteapp on any node and port through any local LAT tty device: llogin siteapp The following command initiates a connection to service siteapp on any node and port through local LAT tty device 620: llogin siteapp -p 620 The following command initiates a connection to service siteapp on any remote port on host HOSTX through local LAT tty device 620: llogin siteapp -p 620 -H HOSTX The following command initiates a connection to service siteapp on remote port TTY_Z on host HOSTX through local LAT tty device 620: llogin siteapp -p 620 -H HOSTX -R TTY_Z SEE ALSO
Commands: latcp(8) Network Information: lat_intro(7) llogin(1)
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