The interactive ambienttalk shell (aka iat) is the command-line interpreter of AmbientTalk. iat supports a very simple read-eval-print loop mode: you can type in expressions (currently only single-line expressions), evaluate them by pressing return and see the value of the expression, for example:

>[1,2,3].map: { |e| e*e }
>>[2,4,9]

To start iat, it suffices to execute it from the command-line, provided the java executable of a JDK1.3.3 or higher JVM is on your executable search path. To get an overview of all available options, execute:

iat --help