I'm really new about linux so this question is pretty dumb i know. Sorry for that.
I checked the user and group and some of users' uid and gid are different so I just wanna make them synchronized.
tail -6 /etc/passwd
mysql:x:993:1000::/path
apache:x:1000:1001::/path
user1:x:1001:1002::/path
I'm wondering that it's not the matter if I synchronized uid and gid. Thanks :)