To use gdb the program to use it on must be compiled with the -g
option.


> gdb prog                 Starts gdb.  where prog is the program name.

  set args < file          Sets command line arguments.  A .gdbrc file
			   will run commands each time gdb is started.

  list line#,	list func,	list file.c:line#

  break line#

  run
  print
  step	(one statement) (steps into subroutine and stops)
  next	(stop at next statement)
  stepi	(assembly lang level)
  nexti

  X words(i) (d) (c) 0xaddress	(i)nt, (d)ec, (c)har
  info stack
  cont
  delete break#