What are the ways that Shell scripts can read one line in a file at a time?
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Write method 1:
The code is as follows:
#! / bin/bash
While read line
Do
Echo $line # here can be changed according to the actual use
Done
< urfile 写法二: 代码如下: #!/bin/bash cat urfile | while read line do echo $line done 注意：以上代码中urfile 为被读取的文件 Shell读取文本文件 方法一：通过命令获取所需内容，传递给变量 代码如下: var1=$(grep -i "^root" /etc/passwd | cut -d: -f 3 2>/ dev/null)
