in reply to Re: Count number of lines in a text file
in thread Count number of lines in a text file

what about my($NumLines)=scalar <$Filename>
  • Comment on Re^2: Count number of lines in a text file

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Re^3: Count number of lines in a text file
by JavaFan (Canon) on Aug 14, 2009 at 17:08 UTC
    That only works if the current line just happens to contain a number which equals the number of lines. <> in scalar context just reads a single line.

    But this works: 

    perl -wE'say~~(()=<>)' yourfile

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      But this works:

      So does this--but efficiently enough tha you can use it on huge files:) 

      c:\test>perl -ne"}{print$." junk.out
20000001

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      It actually beats wc -l on my system.

      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
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In Section Cool Uses for Perl