linux命令怎么换行

在Linux命令行中，换行可以使用以下方法：

1. 在命令末尾使用反斜杠 "\":

例如：

```

$ echo "This is a very long \

line of text that needs \

to be broken into multiple lines."

```

输出：

```

This is a very long line of text that needs to be broken into multiple lines.

```

2. 使用引号包裹命令并在引号中换行：

例如：

```

$ echo "This is a very long

> line of text that needs

> to be broken into multiple lines."

```

输出：

```

This is a very long

line of text that needs

to be broken into multiple lines.

```

3. 将多行命令写入脚本文件，然后执行脚本文件：

例如，在一个名为`script.sh`的文件中写入以下内容：

```

#!/bin/bash

echo "This is a very long

line of text that needs

to be broken into multiple lines."

```

保存文件后，修改文件权限为可执行：

```

$ chmod +x script.sh

```

然后执行脚本文件：

```

$ ./script.sh

```

输出：

```

This is a very long

line of text that needs

to be broken into multiple lines.

```