正则表达式非结束字linux终端

Question

我有这段代码

grep -P "(?<=|^)some [a-z]+s\b" file.txt

它匹配以-s结尾的所有单词，但如果我写这个

grep -P "(?<=|^)some [a-z]+[^s]\b" file.txt

如果我有：

some girls

some girl

some guys

some guy

some apples

some apple

我想找到“一些女孩”，“一些苹果”和“一些男人”

Answer 1

我认为你只想在下一个文件中带有女孩的行：

something wrong
some girl I know
some girl knows some boys 
some boys know nothing

最后一个字母不应该是s：

grep -P 'some [a-z]+[a-rt-z]\b'