Essential LLDB Commands

Table of Contents

Below I list a set of essential lldb commands I regularly use. A more complete cheat sheet can be found here (direct link).

Compilation #

Compile in Debug mode with the following additional flags:

-g -ggdb

Running

$ lldb Executable
(lldb) target create "Executable"
Current executable set to 'Executable' (x86_64).
(lldb) run [args]

Navigating a stack

Breakpoints
b main
breakpoint set --name main
Backtraces
bt
thread backtrace
thread backtrace all
- Frame information
  frame info
- Navigate down
  down
  frame s -r-1
  frame select --relative=-1
- Navigate up
  up
  frame s -r1
  frame select --relative=1
- Select a frame
  f 3
  fr s 3
  frame select 3
Continue
c
thread continue
Step in
s
step
thread step-in
Step over
n
next
thread step-over
Step out
finish
thread step-out

Evaluating variables