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mrco1965@Local54:~$ cpan install WWW::Mechanize
CPAN: Storable loaded ok (v2.20)
Going to read '/home/mrco1965/.cpan/Metadata'
  Database was generated on Sun, 07 Aug 2011 00:28:23 GMT
CPAN: LWP::UserAgent loaded ok (v5.834)
CPAN: Time::HiRes loaded ok (v1.9719)
Fetching with LWP:
http://www.perl.org/CPAN/authors/01mailrc.txt.gz
Going to read '/home/mrco1965/.cpan/sources/authors/01mailrc.txt.gz'
CPAN: Compress::Zlib loaded ok (v2.02)
............................................................................DONE
Fetching with LWP:
http://www.perl.org/CPAN/modules/02packages.details.txt.gz
Going to read '/home/mrco1965/.cpan/sources/modules/02packages.details.txt.gz'
  Database was generated on Tue, 09 Aug 2011 01:41:55 GMT
...............
  New CPAN.pm version (v1.9800) available.
  [Currently running version is v1.9600]
  You might want to try
    install CPAN
    reload cpan
  to both upgrade CPAN.pm and run the new version without leaving
  the current session.


.............................................................DONE
Fetching with LWP:
http://www.perl.org/CPAN/modules/03modlist.data.gz
Going to read '/home/mrco1965/.cpan/sources/modules/03modlist.data.gz'
............................................................................DONE
Going to write /home/mrco1965/.cpan/Metadata
CPAN: Module::CoreList loaded ok (v2.18)
WWW::Mechanize is up to date (1.68).
mrco1965@Local54:~$ perl -e "use WWW::Mechanize;"
mrco1965@Local54:~$
 

                use WWW::Mechanize;
                my $m->get($direccion_web);
# es la línea 2300
                my $m->content();
                my $m->set_fields($arreglo_post);
#ya están arreglados campo=>'valor',...etc
                my $m->find_link(name => 'submit');
#estoy tratando de buscar la palabra submit en el name=
                my $m->follow_link();
#quiero que siga el link
 

Can't call method "get" on an undefined value at perl.pl line 2300.