The /proc/ filesystem, if you’re not familiar with it, is a magical place full of all kinds of useful debugging tools for introspecting (and modifying) the state of a Linux machine – especially for inspecting other processes. /proc/<pid>/maps shows, for any process on the system, a list of all of the memory mappings in its address space. For a simple cat execution on my machine, it looks like: [nelhage@nelhage:~]$ cat /proc/self/maps 00400000-0040b000 r-xp 00000000 09:01 254164 /bin/cat 0...
