Tool command language, a widely used scripting tool that was deveoped for controlling and extending appliations.
1 Run
When you have installed Tcl, the program you will then call to utilize it is tclsh.
For instance, if you write some code to a file "hello.tcl", and you want to execute it, you would do it like so: tclsh hello.tcl
2 UNIX Tcl scripts (type "tclsh")
1) puts - writes the string to I/O steam
puts "Hello, World - In quotes" ; # This is a comment after the command.
puts {Hello, World - In Braces}
puts {Bad comment syntax example} # *Error* - there is no semicolon puts "line 1"; puts "line 2" puts "Hello, World; - With a semicolon inside the quotes" # Words don't need to be quoted unless they contain white space:
puts HelloWorld
2) set - assign a value to a variable
The dollar sign $ tells Tcl to use the value of the variable - in this case X or Y.
set X "This is a string" set Y 1.24 puts $X
puts $Y puts "..............................." set label "The value in Y is: "
puts "$label $Y"