Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

It sounds like to me that you haven't tried any of the things in the Perl book that might answer this question. You do have a Perl book, don't you? I can highly recommend the fine series of books from O'Reilly.

In any event, the variable $. tells you what line you're on, so printing that out after reading through the file would tell you what number the last line of the file was.

#!/usr/bin/perl -w use strict; while(<>){} print "Last line number was $.\n";

If you also want to fine out how many characters there were, you'd add something to count the length of each line:

#!/usr/bin/perl -w use strict; my $totalLength = 0; while(<>){$totalLength += length($_);} print "Last line number was $.\n"; print "Total length was $totalLength\n";

I haven't tested this code; don't know if it works or not. I'll leave that up to you. Play around. See what works. Read that Perl book. Try stuff, and come ask questions when you get stuck, and not before.

Alex / talexb / Toronto

Life is short: get busy!


In reply to Re: Count the number of lines in a file by talexb
in thread Count the number of lines in a file by pastorizah

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



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others taking refuge in the Monastery: (7)
As of 2024-03-29 00:07 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found