A small ruby script to show how the ruby-debug works.

debug_1.rb

[-4, 5] in /projects/889122/small_script.rb
=> 1  dude = true
   2  
   3  if dude
   4    puts "Hey dude"
   5  else
/projects/889122/small_script.rb:1
dude = true
(rdb:1) 

rdebug_help

ruby-debug help v0.10.4
Type 'help <command-name>' for help on a specific command

Available commands:
backtrace  delete   enable  help  method  putl     set     trace    
break      disable  eval    info  next    quit     show    undisplay
catch      display  exit    irb   p       reload   step    up       
condition  down     finish  kill  pp      restart  thread  var      
continue   edit     frame   list  ps      save     tmate   where

rdebug_next_help

(rdb:1) help next
n[ext][+-]?[ nnn]	step over once or nnn times, 
		'+' forces to move to another line.
		'-' is the opposite of '+' and disables the force_stepping setting.
(rdb:1) _

small_script.rb

dude = true

if dude
  puts "Hey dude"
else
  puts "Hello world"
end