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The Tool Command Language (Tcl) is a scripting language. Togther with
the graphical user interface toolkit Tk it is a programming tool which
is ported to many operating systems. While not as efficient as compiled
programming languages or compiled user interfaces, it allows fast development of
code in a high level programming language.
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What you can do with Tcl is best seen with a few examples. After having
downloaded a file say "command.tcl" and after having made it executable
with chmod "755 command.tcl" it can be executed like a shellscript.
You might find Tkl/Tk is especially useful to test programs which output numerical values.
The program duffing.c for example produces orbits of a
ordinary differential equation. With input.tcl and
output.tcl , you can interact with that program graphically
instead of staring at numbers only.
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You can download this whole directory as a gziped tarball tcl.tgz .
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