标题: 找出某个字符在字符串中出现的次数 [打印本页]

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作者: linda    时间: 2023-6-2 09:38     标题: 找出某个字符在字符串中出现的次数

You can do it by combining tr and wc commands. For example, to count e in the string referee

echo "referee" | tr -cd 'e' | wc -c
output

4
Explanations: Command tr -cd 'e' removes all characters other than 'e', and Command wc -c counts the remaining characters.

参考：
https://stackoverflow.com/questions/16679369/count-occurrences-of-a-char-in-a-string-using-bash

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