一、语法
![](https://img.haomeiwen.com/i15571992/c437864b710468bd.png)
二、内部变量
![](https://img.haomeiwen.com/i15571992/f7966b9b0c544dc9.png)
逐一举例
fs
![](https://img.haomeiwen.com/i15571992/bc266535971949e4.png)
ofs
![](https://img.haomeiwen.com/i15571992/755077e6a1f2e76c.png)
rs
![](https://img.haomeiwen.com/i15571992/f4446aae1d2ad631.png)
ors
输出记录(行)分隔符,默认换行符
fnr
多文件独立编号(编程中少有使用)
nr
![](https://img.haomeiwen.com/i15571992/2cefd0046fd76bd0.png)
nf
字段总数
三、格式化输出
![](https://img.haomeiwen.com/i15571992/704242a06ef80036.png)
四、模式和动作
![](https://img.haomeiwen.com/i15571992/8df2f853aea845f7.png)
五、awk脚本编程
1调用变量
![](https://img.haomeiwen.com/i15571992/4408fd94cf1754fb.png)
2条件判断
![](https://img.haomeiwen.com/i15571992/7bf054e23dffb8e1.png)
3循环
![](https://img.haomeiwen.com/i15571992/12d878f628cb0c1f.png)
4数组
![](https://img.haomeiwen.com/i15571992/de72ca5a2d76485a.png)
案例
![](https://img.haomeiwen.com/i15571992/6b13667f59f82332.png)
六、案例
![](https://img.haomeiwen.com/i15571992/4b9e80b198c79573.png)
逐一举例
fs
ofs
fnr
多文件独立编号(编程中少有使用)
nr
本文标题:2019-01-12三剑客之awk
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