adam@red:~/cpan2/trunk/Process$ perl -de 1

Loading DB routines from perl5db.pl version 1.25
Editor support available.

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

main::(-e:1):   1
  DB<1> $} = "Hello World!\n";

  DB<2> print $}
Hello World!

  DB<3>