A lightweight Linux process monitor written in C.

Reads /proc/[pid]/status for every running process and displays a live-refreshing table showing PID, name, state, and memory usage.

make

./procmon

• How Linux exposes process information through the /proc filesystem
• Using opendir/readdir to iterate /proc directories in C
• Handling ENOENT gracefully when a process disappears mid-read
• Debugging with GDB on a real systems program