Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
以下命令将突出显示 4 a 而不是 3 a。我只想匹配不超过3个a。我使用的正则表达式有什么问题吗?
pcregrep --color 'a{0,3}' <<< aaaabbb