本文介绍了遍历用awk输入字符串中的字符的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
不管你信不信,我找不到答案我会觉得这是这个非常基本的问题。
Believe it or not, I can't find the answer to what I would think would be this very basic question.
在awk中,我怎么能遍历由字符输入字符串的字符?比方说,我只是想打印出来。是否有一个数组我可以访问?还是我需要使用SUBSTR?
In awk, how can I loop over the input string character by character? Let's say I just wanted to print them out. Is there an array I can access? Or do I need to use substr?
基本上是这样的:
echo "here is a string" | awk '
{ for(i=0; i<[length of input string]; i++)
printf [value at index i in array x];
}'
坦率地说,我很尴尬。
Frankly, I'm embarrassed.
推荐答案
您可以将字符串中使用转换为数组拆分
:
You can convert a string to an array using split
:
echo "here is a string" | awk '
{
split($0, chars, "")
for (i=1; i <= length($0); i++) {
printf("%s\n", chars[i])
}
}'
本垂直打印的字符,每行一个。
This prints the characters vertically, one per line.
这篇关于遍历用awk输入字符串中的字符的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!