As you can see from the above responses there are a few ways to do it, but there are a couple of things to watch out for if you decide to use the special Perl variable $. which is its special behavior that arises when reading from the the empty diamond operator (<>) and also when you localize the variable itself.

Basically I am 99% sure you just want to increment a counter and keep track of the line number yourself. Since the file will open at the beginning and read one line each time the while statement loops, a simple $line++ statement inside that loop should be sufficient.

In addition to checking that open succeeded, I'd also recommend adding \n to the end of your print statement..

In reply to Re: Determining what line a filehandle is on by mattr
in thread Determining what line a filehandle is on by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.