🖥️ LTM - Linux Task Manager (CLI)

A lightweight, interactive, high-performance Linux Command-Line Task Manager written in standard C++. It interacts directly with the Linux Kernel via the /proc pseudo-filesystem to monitor active processes and manage them using POSIX system signals.

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🚀 Recent Updates & Performance Optimizations

• Engine Refactoring (From Tokenization to Stream Parsing): Upgraded the /proc/[PID]/status parser by replacing the old word-by-word stream extraction (statusFile >> word) with an advanced std::getline() and std::string::find() implementation.
  • Why this matters: The old method was prone to tokenization misalignment and high CPU overhead. The new getline stream-based approach scans memory structures line-by-line via the kernel buffer, dramatically increasing extraction speed and mitigating parsing dead-ends.

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✨ Features

• Zero-Dependency: Standard C++ library only.
• Kernel Direct-Access: Reads directly from the /proc filesystem.
• PID Mapping: Identifies active processes.
• Interactive CLI Interface: Real-time process monitoring with custom action loops (Refresh/Exit).
• Process Management: Send kernel signals (SIGKILL) to terminate any task instantly via PID.
• Smart Memory Auto-Scaling: Displays memory consumption dynamically in Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, or Petabytes based on real usage.
• Crash Resilience: Built-in exception handling to survive dynamic kernel thread shifts.

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💡 How it works

1. Discovery: Scans the /proc directory for PID-named folders using dirent.h.
2. Filtering: Uses isdigit() to isolate system processes.
3. Extraction: Parses /proc/[PID]/status to retrieve the process name and RAM usage (VmRSS).
4. Interactivity: Captures user input to safely dispatch POSIX signals or trigger dynamic terminal redraws using system("clear").

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🖥️ UI Preview

When you run the application, you will interact with a clean terminal:

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🐧 System Requirements

• OS: Linux-based operating systems (Tested on Arch Linux).
• Compiler: Clang or GCC/G++ with C++17 support or higher.

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🛠️ Installation & Run Guide

# 1. Clone the repository
git clone https://github.com/sudoRebel/linux-task-manager && cd linux-task-manager

# 2. Compile using Clang++ with C++17
clang++ -std=c++17 -I include src/*.cpp -o linux-task-manager

# 3. Run the application with root privileges
sudo ./linux-task-manager