Feat/cli filehashr - #409

Description

Adds a new CLI mini-project FileHashr - a simple command-line tool to generate cryptographic hashes for files or standard input.

What's Included

• filehashr.py: Python CLI tool that computes SHA256, SHA1, or MD5 hashes
• README.md: Complete documentation with usage examples and contributor tag

Features

• ✅ Hash files or read from stdin
• ✅ Support for multiple algorithms (sha256, sha1, md5)
• ✅ Streams large files efficiently (1MB chunks)
• ✅ Optional filename labeling in output
• ✅ No external dependencies (uses Python standard library only)

Usage Examples

# Hash a file with default SHA256
python3 filehashr.py path/to/file.txt

# Use MD5 algorithm
python3 filehashr.py --algo md5 file.txt

# Read from stdin
echo "hello" | python3 filehashr.py -a sha1

# Include filename in output
python3 filehashr.py --label file.txt

Requirements

• Python 3.8+
• No external dependencies (uses only hashlib, argparse, pathlib)

Project Structure

FileHashr/
├── README.md       # Project documentation with contributor tag
└── filehashr.py    # Main CLI implementation

Testing

The script has been tested with:

• Various file sizes (small to large)
• Different hash algorithms
• Standard input piping
• Error handling for missing files

Contributor Tag

✅ Contributor tag properly included in README.md as: **Contributor:** bavi404

Domain: CLI
Type: Mini Project
Difficulty: Beginner