While many operating systems seem to try to prevent you from peeking under the hood, Unix and Linux positively encourage it.

I have noticed from experience that when my Linux programs fail, it's often a subtle event that can leave you confused or unsure of what actually went wrong. When I have fallen back to top, htop, or ...

If you’re going to make good use of strace, it’s good to have a basic understanding of what a system call is and some of the calls that you’re likely to see. To gain some familiarity, you can use ...