For all those times when shell scripts just don't cut it, Tcl/Tk is the solution. Have a great application that needs to be programmable, but you don't want to write your own interpreter? Tcl/Tk can be embedded right into your code, all you have to do is link it in.
Tcl is the "Tool Command Language," a simple and extensible scripting language. Tcl is a library upon which more complex applications can be built. Part of the standard Tcl distribution is tclsh, a simple shell for scripts.
Tk is an extension to the basic Tcl library which adds commands for interfacing to the X Window System.  Tk allows you to create graphical user interfaces (GUIs) quickly and easily. Tk includes wish, the windowing shell for scripts.
WeÕve also included Expect, a Tcl extension that allows the control of interactive programs from 
a script.
On this CDROM, you get a complete copy of the main Tcl Internet archive site at ftp.aud.alcatel.com. You get source code for Tcl 7.4 patchlevel 1 and Tk 4.0 patchlevel 1. The sources are easy to install directly from the disc to any UNIX system.

This disc includes are Tcl ports to MSDOS, Windows, and the Macintosh.
You also get 60+ megabytes of archive of the USENET news group comp.lang.tcl, along with other Tcl documentation to round out your Tcl education.
The Tcl/Tk disc is an invaluable resource for any forward-thinking programmer.
October 1995