Awk学习笔记.pdf

【实例截图】

【核心代码】

AWK 学习笔记 ................................................................................................................................1
1．AWK 简介 ..........................................................................................................................1
2．AWK 编程模型 ..................................................................................................................2
3. 常量与转义符......................................................................................................................3
4. 变量......................................................................................................................................3
4.1 用户定义变量.............................................................................................................3
4.2 系统变量.....................................................................................................................4
4.3 字段变量.....................................................................................................................4
5 数组.......................................................................................................................................5
6 操作符...................................................................................................................................5
7 流程控制...............................................................................................................................6
8 函数.......................................................................................................................................7
8．1 算术函数.................................................................................................................7
8.2 字符串函数................................................................................................................7
8.3 字节处理函数............................................................................................................8
8.4 时间函数....................................................................................................................8
8.5 用户自定义函数........................................................................................................9
9 输入输出...............................................................................................................................9
9.1 输入............................................................................................................................9
9.2 输出..........................................................................................................................10
10 总结...................................................................................................................................10
11. 参考文献..........................................................................................................................10