GuardProtect is a lightweight system monitoring tool written in pure C, designed as a simple analog of the classic ps aux command — but with a twist!
It reads process information directly from the Linux virtual filesystem /proc/, builds a hash table of processes, and can also print them as a hierarchical tree.

• 📊 List all processes — similar to ps aux
• 🌳 Display process tree — shows parent/child relationships
• ⚙️ Inspect a single process — by specifying its PID
• 💾 Uses /proc/ virtual filesystem — no external dependencies
• ⚡ Efficient data access using a custom hash table
• 🧠 Written entirely in C — for educational clarity and performance

/proc/ is a virtual filesystem in Linux that exposes kernel data structures.
Each process has a folder /proc/<PID> containing files like:

• /proc/<PID>/stat – basic process info
• /proc/<PID>/status – readable process metadata
• /proc/<PID>/cmdline – command used to start the process

GuardProtect parses this data and builds internal structures representing each process.

Internally: