sample-lines 1.0.1

Command-line tool to sample lines from a file or stdin without replacement. It runs in one pass without reading the whole input into memory using reservoir sampling.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66

# sample-lines

`samp` is a fast, reliable command-line tool to randomly sample
lines from a file or standard input using [reservoir
sampling](https://en.wikipedia.org/wiki/Reservoir_sampling). It
samples without replacement.

Good for:
- Downsampling large datasets
- Sampling logs for debugging
- Creating reproducible random subsets of data

## 📦 Installation

If you have Rust installed, you can install `samp` with:

```bash
cargo install sample-lines
```

Or build from source:

```bash
git clone https://github.com/stringertheory/sample-lines.git
cd sample-lines
cargo build --release
```

## 🚀 Usage

```bash
samp -n <NUM> [--seed <SEED>] [FILE]
```

Here are a few examples:

```bash
samp --help
cat data.txt | samp -n 10
samp -n 10 data.txt
samp -n 10 < data.txt
samp -n 10 --seed 17 < data.txt
```

### Options

| Option        | Description                             |
|---------------|-----------------------------------------|
| `-n <NUM>`     | Number of lines to sample (**required**) |
| `--seed <SEED>`| Optional seed for reproducible sampling |
| `-h`, `--help` | Show help message                       |

## 🧪 Testing

```bash
cargo test
```

## 📝 License

Licensed under the [MIT License](LICENSE).

## 🤝 Contributing

Issues and pull requests welcome! If you have an idea, a feature
request, or a bug report, feel free to open an issue or PR.