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  1. #!/usr/bin/perl
  2. open(TL,">test.txt");
  3. print TL ("error");
  4. close (TL);
  5. open(RL,"test.txt");
  6.  @test = <RL>;
  7. $error = grep(/error/,@test);
  8. printf ("ERROR %d ",$error);
Success #stdin #stdout 0s 4596KB
comments (?)
stdin 
Standard input is empty
stdout 
ERROR 0
https://ideone.com/KZMSj
language:
Perl (perl 5.28.1)
created:
14 years ago
visibility:
public

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