perl -d -t /tmp/d.pl

Loading DB routines from perl5db.pl version 1.3
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(/tmp/d.pl:5):	require 5.008008;
  DB<1> n
main::(/tmp/d.pl:9):	my $ua = LWP::UserAgent->new;
  DB<1> n
main::(/tmp/d.pl:10):	$ua->env_proxy;
  DB<1> 
main::(/tmp/d.pl:11):	my $r = $ua->get('http://www.perlmonks.org');
  DB<1> 
main::(/tmp/d.pl:16):	die "Failed to retrieve url, " . $r->status_line . "\n"
main::(/tmp/d.pl:17):	    if (!$r->is_success);
Insecure dependency in sprintf while running with -t switch at /usr/share/perl/5.10/overload.pm line 99.
Insecure dependency in sprintf while running with -t switch at /usr/share/perl/5.10/overload.pm line 99.
Insecure dependency in open while running with -t switch at /usr/local/lib/perl/5.10.0/Term/ReadLine/Gnu.pm line 620.
 at /usr/local/lib/perl/5.10.0/Term/ReadLine/Gnu.pm line 620
	Term::ReadLine::Gnu::Var::FETCH('Term::ReadLine::Gnu::Var=SCALAR(0x8e78258)') called at /usr/local/lib/perl/5.10.0/Term/ReadLine/Gnu.pm line 298
	Term::ReadLine::Gnu::readline('Term::ReadLine=HASH(0x8df56b8)', '  DB<1> ') called at /usr/share/perl/5.10/perl5db.pl line 6414
	DB::readline('  DB<1> ') called at /usr/share/perl/5.10/perl5db.pl line 2227
	DB::DB called at /tmp/d.pl line 16
Insecure dependency in sprintf while running with -t switch at /usr/share/perl/5.10/overload.pm line 99.
Insecure dependency in sprintf while running with -t switch at /usr/share/perl/5.10/overload.pm line 99.
Insecure dependency in sprintf while running with -t switch at /usr/share/perl/5.10/overload.pm line 99.
Insecure dependency in open while running with -t switch at /usr/local/lib/perl/5.10.0/Term/ReadLine/Gnu.pm line 656.
 at /usr/local/lib/perl/5.10.0/Term/ReadLine/Gnu.pm line 656
	Term::ReadLine::Gnu::Var::STORE('Term::ReadLine::Gnu::Var=SCALAR(0x8e78258)', 'Term::ReadLine::Gnu::Var=GLOB(0x8ef1638)') called at /usr/local/lib/perl/5.10.0/Term/ReadLine/Gnu.pm line 298
	Term::ReadLine::Gnu::readline('Term::ReadLine=HASH(0x8df56b8)', '  DB<1> ') called at /usr/share/perl/5.10/perl5db.pl line 6414
	DB::readline('  DB<1> ') called at /usr/share/perl/5.10/perl5db.pl line 2227
	DB::DB called at /tmp/d.pl line 16