开关/箱不工作的awk

问题描述

我写在RedHat Linux上一个简单的awk，却发现交换机/案例并不为我工作。我搜索的网页，但没有找到一个解决方案。以下是我的code：

  BEGIN {
   富= 1;
     开关（富）{
         案例3：
         打印×;
         打破;
         案例2：
         打印Y;
         打破;
         情况1：
         打印Z;
         打破;
         默认：
         打印默认;
      }
 }
 

我运行awk的是GNU awk的3.1.5。我得到了以下错误：

awk: test.awk:3:      switch (foo) {
awk: test.awk:3:                   ^ syntax error
awk: test.awk:5:          case 3:
awk: test.awk:5:                ^ syntax error
awk: test.awk:8:          case 2:
awk: test.awk:8:                ^ syntax error
awk: test.awk:11:          case 1:
awk: test.awk:11:                ^ syntax error
awk: test.awk:14:          default:
awk: test.awk:14:                 ^ syntax error

can anybody please help me out? thank you!

解决方案

The GAWK manual says:

Which version of gawk are you using? Was it compiled with the --enable-switch option?

If you can't tell whether gawk was compiled with --enable-switch and you are getting syntax errors, it is reasonable to infer that it is not. I'm using gawk 3.1.8 compiled with the default configuration and get pretty much exactly the errors you are seeing on your script. Given that, it is highly unlikely that your version is compiled with the necessary configuration option. It isn't hard to recompile gawk with the option if you want to.

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