我可以做AWK字符串比较？ [英] Can I do string comparison in awk?

问题描述

我只是想知道有没有办法做到的字符串对比在AWK？我只是发现它数值比较。

I just want to know is there way to do string comparision in awk? I just found numeric comparison in it.

我需要按字母顺序来比较两个字符串，不仅是平等的测试。

I need to compare 2 strings in alphabetic order, not only equality test.

推荐答案

当然它可以：

pax$ echo 'hello
goodbye' | gawk '{if ($0 == "hello") {print "HELLO"}}'
HELLO

您也可以做的不平等的（有序）测试以及

You can also do inequality (ordered) testing as well:

pax> printf 'aaa\naab\naac\naad\n' | gawk '{if ($1 < "aac"){print}}'
aaa
aab

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