摘要：http://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000 a、编码 默认情况下，Python 3 源码文件以 UTF-8 编码，所有字符串都是 unicode 字符串，也可以为源码文件指定不同 阅读全文

摘要：1 find . -perm 664 2 3 Search for files which have read and write permission for their owner, and group, but which other users can read but not write 阅读全文