bash bash中两个字符串之间的差异
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/20046482/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-09-18 08:39:56 来源:igfitidea点击:
diff between two strings in bash
提问by georgiana_e
I have two strings containing lines of information. I want to obtain the lines that are different in the two strings. Example: String1:
我有两个包含信息行的字符串。我想获得两个字符串中不同的行。示例：字符串 1：
"This is line1
This is line2
This is line3"
String2:
字符串2：
"This is line1
This is linex
This is line2"
Result expected:
预期结果：
diff string1 string2 is:
"This is line3"
diff string2 string1 is:
"This is linex"
回答by devnull
You could use comm:
你可以使用comm：
$ str1="This is line1
> This is line2
> This is line3"
$ str2="This is line1
> This is linex
> This is line2"
$ comm -23 <(echo "$str1" | sort) <(echo "$str2" | sort)
This is line3
$ comm -23 <(echo "$str2" | sort) <(echo "$str1" | sort)
This is linex
回答by kenichi
You could do smth like what you want namely with diff
你可以随心所欲 diff
$ str1="This is line1\nThis is line2\nThis is line3"; str2="This is line1\nThis is linex\nThis is line2";
$
$ diff -y -W 30 --suppress-common-lines <(echo -e $str1) <(echo -e $str2)
> This is linex
This is line3 <
Inspired by this question&answers: Bash string difference
受此问题和答案的启发：Bash 字符串差异
