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How to determine if the output is screen or pipe.

/ Published in: Perl
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  1. sub isOutputScreen {
  2.  
  3. 　　use POSIX;
  4.  
  5. 　　return 0 if POSIX::isatty( \*STDOUT) eq "" ; # pipe
  6. 　　return 1; # screen
  7. } # end of isOutputScreen

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