File System Comparator (fsf)

Overview

fsf is a high-performance C++20 command-line tool designed to compare files across multiple directories. It provides flexible file comparison modes, performance measurement, and detailed reporting.

Features

• Multiple comparison modes

  • all: Compare all files
  • different: Show only different files
  • same: Show only identical files
  • unique: Show unique files

• Performance measurement

• Concurrent file processing

• MD5-based file comparison

• Automatic time logging

• Supports multiple directories

Prerequisites

• C++20 compatible compiler (GCC 10+)
• CMake 3.10+
• OpenSSL development libraries

Installation

Dependencies

On Ubuntu/Debian:

sudo apt-get update
sudo apt-get install build-essential cmake libssl-dev

On macOS (using Homebrew):

brew install cmake openssl

Building

# Clone the repository
git clone <repository-url>
cd fsf

# Build the project (optional)
mkdir build
cd build
cmake ..
make

Usage

Basic Usage

# Compare files in two directories
./fsf same dir1 dir2

# Compare files in multiple directories
./fsf all dir1 dir2 dir3

# Show help
./fsf --help

Performance Measurement

# Run comparison 10 times
./fsf same -r 10 dir1 dir2

Modes

• all: Show all file comparisons
• different: Show only files that differ
• same: Show only identical files
• unique: Show files unique to specific directories

Output

The tool generates detailed output about file similarities and can log performance metrics to time-times.txt.

Performance Logging

Each run can be logged with:

• Timestamp
• Number of repetitions
• Mean execution time
• Standard deviation
• Comparison mode
• Directories compared

Contributing

1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

MIT.

Contact

christian.schladetsch@gmail.com