Nice, I really like that it describes the DWARF format instead of just handwaving around it. I've been considering adding DWARF support to my compiler so that I can use mainstream debuggers with it and this article has just destroyed my last excuse to procrastinate.

I must admit, the title got me very excited (it's still a cool article regardless) - something I've always wanted is a system-wide debugger for Linux. Something that can put breakpoints in arbitrary executables or shell scripts (via custom /bin/sh wrapper?) system wide, not just within a debugging session. I'd love to be able to put conditional breakpoints on, say, any process that opens a named pipe matching some regex. I find that when dealing with complex systems involving systemd services, cron jobs, udev and 30 different daemons running in background, gdb and strace simply aren't enough.