Apprentice GDB operator guide

Run GDB as an INEXORABLE PROFESSIONAL
gdb -tui

Start the show (run)
r

Walk one line (step)
s

Walk one line without going into subroutine (next)
n

Schedule a stop at a certain place (breakpoint)
b

Step out of subroutine (finish)
fin

Examine intricate ways of destiny (backtrace)
bt

That's all you need to find your stupid bugs in your stupid program kid