in reply to Re^2: Count number of lines in a text file
in thread Count number of lines in a text file

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

[download]

Replies are listed 'Best First'.
Re^4: Count number of lines in a text file
by BrowserUk (Patriarch) on Aug 14, 2009 at 17:40 UTC
    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

    [download]

    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".
    In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]
[d/l]
[select]

In Section Cool Uses for Perl