· Pantelis Theodosiou

GPass - Password Generator CLI

A simple command-line utility for generating secure random passwords. Lightweight, fast, and works right from your terminal.

A simple command-line utility for generating secure random passwords. Lightweight, fast, and works right from your terminal.

The Challenge

Generating secure passwords should be quick and effortless, especially when you're working in the terminal.

  • Context: Developers and technical users often need to create passwords on the fly while working from the command line.
  • Problem: Browser-based password generators require switching contexts, and existing CLI tools are often overly complex or have unnecessary dependencies.
  • Goal: Build a minimal, fast password generator that works directly in the terminal with simple, intuitive commands.

The Solution

GPass is a lightweight command-line tool that generates secure random passwords instantly.

  • Strategy: Create a zero-configuration utility that focuses on speed and simplicity, with sensible defaults that work for most use cases.
  • Key Capabilities:
    • Instant Generation: Generate passwords immediately without configuration.
    • Customizable Length: Specify password length to match your requirements.
    • Character Sets: Control which character types to include (uppercase, lowercase, numbers, symbols).

Technical Architecture

Built for simplicity and speed.

  • Tech Stack: Node.js, JavaScript.
  • Architecture: A single-purpose CLI tool with minimal dependencies, designed to be fast and lightweight.
  • Key Decisions:
    • Node.js: Chose for its universal availability and simple package distribution via npm.
    • Minimal Dependencies: Kept the tool lightweight by using Node.js built-in crypto module for secure randomness.

My Role & Contributions

I built GPass as a personal utility tool that I needed for my own workflow.

  • Full Development: Designed and implemented the complete CLI tool from scratch.
  • UX Focus: Prioritized simplicity and ease of use with sensible defaults and clear command-line options.
  • Distribution: Published as an npm package for easy installation and use.

Challenges & Learnings

  • Obstacle: Ensuring truly random password generation using secure methods.
  • Solution: Leveraged Node.js crypto module which provides cryptographically strong random number generation suitable for security-sensitive applications.
  • Takeaway: Simple, focused tools that solve one problem well are often more valuable than complex, feature-rich alternatives.

Impact & Results

  • Outcome: Created a reliable tool that I use regularly for generating passwords quickly from the terminal.
  • Metric: Lightweight package size and fast execution time.
  • Feedback: The simplicity and speed make it a go-to tool for quick password generation needs.

Need something similar?

If you're looking for a custom CLI tool or utility that fits your workflow, I can build something tailored to your needs. Whether it's a password generator, file processor, or another command-line utility, I focus on making tools that are simple, fast, and reliable.

Get in touch to discuss your project, or check out more projects I've built.

I typically reply within 24 to 48 hours. I'm based in Thessaloniki, so keep timezone differences in mind.

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