gistfile1.txt

~/repos/learnyounode (master) > nodejs debug program.js 
< Debugger listening on port 5858
debug> . ok
break in program.js:1
> 1 var a = "Hello";
  2 debugger
  3 var b = "World";
debug> c
break in program.js:2
  1 var a = "Hello";
> 2 debugger
  3 var b = "World";
  4 
debug> a
repl:1
a
^
ReferenceError: a is not defined
    at repl:1:1
    at Object.exports.runInContext (vm.js:64:17)
    at Interface.controlEval (_debugger.js:975:21)
    at bound (domain.js:254:14)
    at REPLServer.runBound [as eval] (domain.js:267:12)
    at REPLServer.<anonymous> (repl.js:279:12)
    at REPLServer.emit (events.js:107:17)
    at REPLServer.Interface._onLine (readline.js:214:10)
    at REPLServer.Interface._line (readline.js:553:8)
    at REPLServer.Interface._ttyWrite (readline.js:830:14)
debug>