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  1. sudo port install flex
  2.  
Success #stdin #stdout #stderr 0.03s 6768KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
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ERROR: /home/FOh46p/prog:1:23: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/2GbJu9
language:
Prolog (swi 7.6.4)
created:
332 days ago
visibility:
public

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