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display will evaluate and print an expression after each command run.

  • Use display/i $pc to get the current instruction address and decode
    • 2i will give you the current and next instruction

Control flow

  • Use finish to move to the end of a stack frame
  • Use step and stepi to move forward, descending into new stack frames
  • Use next and nexti to move forward, skipping over new stack frames
  • Export LD_BIND_NOW=1 to force early symbol binding. This eliminates annoying dl code when resolving the .plt section
  • Use set follow-fork-mode child to follow the child of fork/vfork


  • Stacktrace of all threads -- thread apply all bt