Pedro- You are talking about what I would call "stateful" applications or application servers. A quick search turned up something about the BEA application server, but the Tarantella product from SCO is the first thing that jumped to my mind. Unfortunately, these products use web technologies, like Java, to deliver their apps to the viewer software. You would, therefore, have to beef up your text-only workstations to be able to use them (assuming low-end stations, hence text only; if your stations are X capable, then by all means, run with it).
Another option is VNC. I believe VNC is stateful, though I haven't investigated this capability of VNC personally. Someone recently mentioned a DOS client for VNC, which would fit into your low-end terminals. I also take it one could somehow use VNC to serve up a single application instead of an entire desktop. If you want a clean solution without having to make the jump to graphical terminals, then what you want is basically the following: <terminal> -- <stateful layer> -- <application server> instead of <terminal> -- <application server> (Most likely, the stateful layer will reside on the application server. This is not necessary, though. The application server could be on a third box. The only requirement is that the stateful layer not be at the terminal, of course!) The terminal will initiate a request for an application. The application server will start the app and its output will be directed to the "stateful layer" (whatever that is). The terminal will then interact with the stateful layer. If the terminal dies or communication is cut or whatever, the stateful layer is still running and communicating with the application server and your terminal should be able to reconnect to the stateful layer and pick up where you left off later. It sounds like it would be best to have the whole text session (starting with logon) in the stateful layer, rather than specific applications. A process that runs as the user immediately after login, perhaps instead of the shell... It would have to be reparented as a child process of init so that it doesn't die if the user's session is unexpectedly terminated. If the user logs in and the program starts but finds a copy of itself already running for this user, it simply connects the new login session to the existing stateful session... Of course, this dumbly assumes only one simultaneous session per user. One would thus have to encode some kind of session-id into the stateful layer instance so that the new invocation can check to see if the associated session still exists. Okay, back to your question... It sounds like this is all quite possible, theoretically. Whether it's already a project on Sourceforge or something is another matter. It shouldn't be too hard, however, so I imagine that someone somewhere has done it. My quick search didn't turn up anything, but I didn't try very hard. Hopefully I've at least given you some more search terms to play with... and perhaps even some ideas on where to start writing your own implementation. A project like this could be very useful! Anyone else here heard of anything that does this? If not, further posts should probably be off the list because this is pretty off-topic. Jason > Date: Sat, 1 Jun 2002 12:36:42 -0700 (PDT) > From: Pedro Torres <[EMAIL PROTECTED]> > Subject: [Ltsp-discuss] (no subject) > > i need to know if i can restore a ltsp console > terminal (text base) from a abnormal power off (or > anything like) to the state before occurs the power > off. _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.openprojects.net