A '''script''' is a sequence of [command%|%commands], separated by a semicolon
or newline,  that an [interp%|%interpreter] can [eval%|%evaluate].  It is also usable as
[data format].

More generally, a script is a set of statements written in the [scripting
language%|%language] of an [interpreter] such as [Tcl].



** See Also **

   [Dodekalogue]:   The rules of Tcl.

   [Many ways to eval]:   Enumerates the ways to evaluate a string as a script.

   [cmdSplit%|%scriptSplit]:   Splits a script into its constituent commands.

   [parsetcl]:   

   [scripted list]:   Performs [substitution%|%substitutions] on the words of each command in a script and then concatenates the commands into a single list.



** Description **

A script can be provided to Tcl in various ways:

        Invocation of an interpreter such as [tclsh]:   The name of a file containing the script can be passed as an argument.

   `[source]`:   The name of a file containing a script can be passed as an argument.

   `[eval]`:   Concatenates arguments into a script and evaluates it.

   `[script substitution]`:   A script is embedded into a command in a larger script. 


A script often provides a [library] for use by other scripts.

Tcl's sparse syntax makes it particularly convenient to embed code written in
another language directly into a Tcl script.  [SQL],
[Perl], [ksh], [awk], or even [C] code can then be handed off to to some
other interpreter for evaluation.  [SQL] is probably the most well-known
example of this.  When generating scripts for another language, it
is necessary to be aware of possible [Injection Attack%|%injection attacks].


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