gdb -q -tui ...

// repaint
ref

// choose panel (asm, register, src code)
layout

// print out assembly isntructions
x/i $pc
x/10i $pc

// print hex and binary
p/x
p/t

// print string
x/s <addr>

// print array
// n : num units
// f : format x,d,u,c,s
// u : unit
x/nfu 

// printf function location
x/i function

// see assembly
disassemble <function>

// see register value
info register

// go to the end of function
finish

// multi thread
i threads

// turn on off pretty print
set print pretty on|off
show print pretty

gdb -x script ...

valgrind -vgdb=yes -vgdb-error=0 <program>

// connect gdb
$ gdb <program>
(gdb) target remote | vgdb