Process Monitor (ps Command Implementation in Rust)

This Rust program is a basic implementation of the ps command, which lists running processes on a Linux system by reading the /proc filesystem.

Implementation Overview

The program performs the following tasks:

1. Read process directories from /proc, filtering numeric PIDs.
2. Parse /proc/[pid]/status to extract:
   • Name (process name)
   • VmRSS (memory usage in KB)
   • Threads (number of threads)
3. Display process details including PID, name, memory usage, and thread count.

Code Structure

• Process struct: Represents a process and gathers process information.
• Status struct: Parses and stores process details from /proc/[pid]/status.
• Functions:
  • Process::process_list(): Reads processes from /proc.
  • Status::parse(pid): Parses status file for details.
  • Status::display_memory(): Formats memory output.