A solution (although it migh be a BadIdea and misguided would be)
### in hello.pl
print "Hello";
### in goodbye.pl
print "goodbye";
### in choose.pl
require shift() . ".pl";
Then fromt he command line perl choose.pl hello would run the hello code, and the same for goodbye. You should definitly verify that the input is a real file that you want to allow them to run etc., but this should get you started down this path. In general i would think it is a bad idea and would rethink what you are doing to see if it fits in some differen t model better.
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