ANNOUNCEMENT: Matt Welsh, author of "The Linux Installation and Getting Started Guide" and "Running Linux" , will be speaking at Gene's books (genes1@netaxs.com) in the King of Prussia Mall (second floor) on September 21st. He'll be talking about his book "Running Linux" (this is a must have for most Linux users). You can find out more about the talk from http://www.cs.cornell.edu/Info/People/mdw/rltour.html. Programming X11 with the Tcl/Tk toolkit. Recently I wrote a Tcl/Tk script to present a nice point-and-click interface to the mgetty+sendfax package. I chose Tcl/Tk because it's the simplest way to write X11 apps and it works well as an extension language. My user interface went pretty well. Tcl/Tk is certainly a good language for this sort of thing. But there are several problems with the language. I discussed some of these at our last meeting. There are two good books on Tcl/Tk. John Ousterhout, the man responsible for tcl, wrote "Tcl and the Tk Toolkit" which gives a nice broad introduction to the language. He also discusses the C interface to Tcl/Tk in depth. However, I like the reference-tutorial approach taken by Brent B. Welch in his "Practical Programming in Tcl and Tk". Welch gives lots of advice on how to organize your code to overcome several of the shortcomings in Tcl's design. UNIX SIG notes: Hmm, I haven't been thinking up good articles for the Data Bus this summer. I'll keep trying but if any other SIG members would like to contribute to the Data Bus and the SIG, I'd like to talk with you about it. September meeting: The first hour (11am-noon) we can have a general Q & A. The second hour (noon-1pm) I'll try to present something on TCP/IP Internetworking.