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hello world (text, log)
Create a new action hello() that prints "Hello world!" in the message log.
 Example implementations 
awk
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bas
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fawk
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fl
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js
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lua
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pas
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pl
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py
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rb
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sh
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stt
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tcl
 Explanation, step by step 
Create a function 
hello
 that will be registered as an action. The name of the action and the function is always the same. Action names shall be lowercase. 
 When the action is called, use 
message
 to append a log message. 
 In the "main" section of the script, register the action using fgw_func_reg().