# gdb commands and short forms
# Huan Chen, 2/3/2017


enter text UI mode: gdb -tui filename

get help of a command: help <cmd-name> or h <cmd-name>

gdb supports TAB to autocomplete (filenames, function names, variable names, etc)

step out: finish

step into: step or s

next line: next or n

run to: run or r

continue: c

set a breakpoint: break 1; b 1 (LINE_NUM), b METHOD_NAME, b FILE_NAME:LINE_NUM

set a conditional breakpoint: break filename:lineNumber if strcmp(var, "hello") == 0, example: break 20 if x == 6

show all breakpoints: info br; or i b

delete a breakpoint: del 1 or clear METHOD_NAME or clear lineNum or clear filename:funcName

delete all breakpoints: del (d)

save breakpoints to a file: save breakpoints <filename> or save br <filename>

load breakpoints from a script file: source <filename>

set a watchpoint: watch expr, GDB will break when the value of expr changes.

examine variables: disp VARIABLE, print or p VARIABLE, printf "%08x\n", i

display a pointer value: p *(int *)0x112203xx

show frame: frame (f)

go to frame n: f <frame_num>

move up/down n frames: up n or down n

backtrace: bt

change variable value at runtime: set (i = 20), set variable i = 40

call a function: call METHOD_NAME(PARAMS)