# fold

控制文件内容输出时所占用的屏幕宽度

## 补充说明

**fold命令** 用于控制文件内容输出时所占用的屏幕宽度。fold命令会从指定的文件里读取内容，将超过限定列宽的列加入增列字符后，输出到标准输出设备。若不指定任何文件名称，或是所给予的文件名为“-”，则fold指令会从标准输入设备读取数据。

### 语法

```
fold(选项)(参数)
```

### 选项

```
-b或——bytes：以Byte为单位计算列宽，而非采用行数编号为单位；
-s或——spaces：以空格字符作为换列点；
-w<每列行数>或--width<每列行数>：设置每列的最大行数。
```

### 参数

文件：指定要显示内容的文件。


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