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passwd testgroup <==给这个群组一个密码吧!
Changing the password for group testgroup
New Password:
Re-enter new password:
# 输入两次密码就对了!
[root@study ~]# gpasswd -A vbird1 testgroup <==加入群组管理员为 vbird1
[root@study ~]# grep testgroup /etc/group /etc/gshadow
/etc/group:testgroup:x:1503: /etc/gshadow:testgroup:$6$MnmChP3D$mrUn.Vo.buDjObMm8F2emTkvGSeuWikhRzaKHxpJ...:vbird1:
# 很有趣吧!此时 vbird1 则拥有 testgroup 的主控权喔!身份有点像板主啦!
范例二:以 vbird1 登入系统，并且让他加入 vbird1, vbird3 成为 testgroup 成员
[vbird1@study ~]$ id
uid=1003(vbird1) gid=1004(vbird1) groups=1004(vbird1) ...
# 看得出来，vbird1 尚未加入 testgroup 群组喔!
[vbird1@study ~]$ gpasswd -a vbird1 testgroup
[vbird1@study ~]$ gpasswd -a vbird3 testgroup
[vbird1@study ~]$ grep testgroup /etc/group
testgroup:x:1503:vbird1,vbird3
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