# nastya-tail
⚡ Lightweight and optimized implementation of Unix `tail` utility in Python with Click framework.
## Features
- ✅ Output last N lines from files or stdin (default: 10)
- ✅ Byte-based output with `-c` option
- ✅ Multiple file support with headers
- ✅ Memory-efficient using `deque` for large files
- ✅ Optimized file seeking for byte operations
- ✅ Compatible with Unix tail behavior
- ✅ Published on PyPI
## Installation
```bash
pip install nastya-tail-lnu
```
## Usage
```bash
# Last 10 lines (default)
tail file.txt
# Last 20 lines
tail -n 20 file.txt
# Last 100 bytes
tail -c 100 file.txt
# Multiple files with headers
tail file1.txt file2.txt
```
## Command Options
| Option | Description |
|--------|-------------|
| `-n, --lines N` | Output the last N lines (default: 10) |
| `-c, --bytes N` | Output the last N bytes |
| `-v, --verbose` | Always print filename headers |
| `-q, --quiet` | Never print filename headers |
| `-h, --help` | Show help message |
## Performance
- Uses `collections.deque` for memory efficiency
- File seeking for byte operations
- Memory usage: O(n) where n is number of lines to output
- Works efficiently with GB-sized files
---
## 📁 Структура директорій
Створіть таку структуру:
```
nastya-tail/
├── .github/
│ └── workflows/
│ └── pypi-publish.yml
├── nastya_tail/
│ ├── __init__.py
│ └── cli.py
├── .gitignore
├── LICENSE
├── MANIFEST.in
├── pyproject.toml
├── README.md
└── setup.py
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