Net::Finger(3) a Perl implementation of a finger client.


Net::Finger is a simple, straightforward implementation of a finger client in Perl --- so simple, in fact, that writing this documentation is almost unnecessary.

This module has one automatically exported function, appropriately entitled "finger()". It takes two arguments:

  • A username or email address to finger. (Yes, it does support the vaguely deprecated ``[email protected]@host'' syntax.) If you need to use a port other than the default finger port (79), you can specify it like so: ``[email protected]:port''.
  • (Optional) A boolean value for verbosity. True == verbose output. If you don't give it a value, it defaults to false. Actually, whether this output will differ from the non-verbose version at all is up to the finger server.

"finger()" is context-sensitive. If it's used in a scalar context, it will return the server's response in one large string. If it's used in an array context, it will return the response as a list, line by line. If an error of some sort occurs, it returns undef and puts a string describing the error into the package global variable $Net::Finger::error. If you'd like to see some excessively verbose output describing every step "finger()" takes while talking to the other server, put a true value in the variable $Net::Finger::debug.

Here's a sample program that implements a very tiny, stripped-down finger(1):

    #!/usr/bin/perl -w

    use Net::Finger;
    use Getopt::Std;
    use vars qw($opt_l);

    $x = finger($ARGV[0], $opt_l);

    if ($x) {
        print $x;
    } else {
        warn "$0: error: $Net::Finger::error\n";