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  1. int $err;
  2. open (TL,">test.txt");
  3. print TL ("error");
  4. close (TL);
  5. $err = "grep error test.txt |wc ";
  6. printf ("VALUE %d ",$err);
  7. if($err != 0){
  8. print ("FAILED");
  9. }
  10. else
  11. {
  12. print ("PASSED");
  13. }
Success #stdin #stdout 0s 4596KB
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stdin
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Standard input is empty
stdout
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VALUE 0 PASSED
https://ideone.com/q438Q
language:
Perl (perl 5.28.1)
created:
14 years ago
visibility:
public

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