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TCL (Tool Command Language) programming language was created by John Ousterhout in 1988 at the University of California, Berkeley. It is scripting language and commonly used for rapid prototyping, scripted applications and testing.

In 1994 John Ousterhout joined Sun Microsystems and with help of Tcl team he has added lot of new feature in TCL and TK.

These are some Important events : 

  • First talk on TCL by John Ousterhout in 1989 at Berkeley Industrial Liaison Conference.
  • First paper presented in 1990 at USENIX Conference by John Ousterhout.
  • In 1990 first TCL community was formed.
  • In 1993 Larry Rowe organized the first Tcl Workshop at Berkeley.
  • John Ousterhout joined Sun Microsystems and start building a team of Tcl developers.
  • TCL and Tk was ported to Windows and Macintosh by Scott Stanton and Ray Johnson.
  • In January 1998 John Ousterhout founded Scriptics with Sarah Daniels to focus on TCL.

Let us see first program in TCL .

puts “Hello World!”

Save this program as Hello.tcl and you can run it using command :

tclsh Hello.tcl

You can install TCL on your machine or you can also execute TCL online  . Check our next post How to install and Run TCL .