$ perl -d debugger.pl 4 Loading DB routines from perl5db.pl version 1.33 Editor support available. Enter h or `h h' for help, or `man perldebug' for more help. main::(debugger.pl:5): my $c = shift; DB<1> b 7 DB<2> b 8 DB<3> b 9 DB<4> b 10 DB<5> s main::(debugger.pl:6): if ($c == 1) { DB<5> s main::(debugger.pl:13): say "something else"; DB<5> s something else Debugged program terminated. Use q to quit or R to restart, use o inhibit_exit to avoid stopping after program termination, h q, h R or h o to get additional info.