# nl

```
nl [OPTION]... [FILE]...
```

Number lines of files

## After Help

`STYLE` is one of:

* `a`     number all lines
* `t`     number only nonempty lines
* `n`     number no lines
* `pBRE`  number only lines that contain a match for the basic regular
        expression, `BRE`

`FORMAT` is one of:

* `ln`    left justified, no leading zeros
* `rn`    right justified, no leading zeros
* `rz`    right justified, leading zeros