Interactive Shell Nuances
The interactive shell uses a special shell interpretter and therefore has different behavior than just writting a script in Groovy. See the Groovy Shell Documentation for more on its usage. Notable differences:
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Def statements do not define a variable in the context of the Shell, e.g. do not use def x = 1, usex = 1
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Shell commands (as seen through help) using the non-functional shell syntax are only available in the shell.
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Groovy classes using annotations cannot be parsed in the Shell.