strace, valgrind and gdb as a strace-like tool

A long time since I do not post some technical thing. Time to share
something I learnt during latest months.

My boss at ProFUSION always says there are only
2 debugging tools worth using: strace and valgrind. Indeed, they
are very helpful while developing software in C. If you don’t know them,
hurry! Google it. Basically what I can do is to summarize their functionality:

• 
  

  strace traces all system calls a program does. You don’t even
  need the source code. Suppose a software is misbehaving and you want
  to know what files it is opening: all you have …