awk的控制语句
本章主要讲actions中的控制语句,和C语言的控制语句类似。
1.选择语句
if (condition) then-body else else-body
2.循环语句之while:
while (condition) body
3.循环语句之do-while:
do body while (condition)
4.循环语句之for:
for (initialization; condition; increment) body
for (i in array) { body}
5.循环语句之switch:
switch (expression) { case value or regular expression: case-body default: default-body }
6.循环语句之continue,break
continue 继续下一个循环
break 跳出当前循环
拒绝低效率勤奋,保持高效思考