# 11.4.直接打印

对于偶尔的打印，可以直接将文件发送到打印机设备，而无需任何设置。例如，可以将名为 `sample.txt` 的文件发送到 `USB` 打印机：

```sh
# cp sample.txt /dev/unlpt0
```

直接打印到网络打印机取决于打印机的功能，但大多数打印机都接受通过 9100 端口的打印任务，且可以使用 [nc(1)](https://man.freebsd.org/cgi/man.cgi?query=nc\&sektion=1\&format=html) 与它们配合使用。要将相同的文件打印到 `DNS` 主机名为 *netlaser* 的打印机：

```sh
# nc netlaser 9100 < sample.txt
```


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