以下哪条命令可以把组DomainAdmins改名为DomainUsers?
A. groupmod -n DomainAdmins DomainUsers
B. groupchg DomainAdmins DomainUsers
C. chgroup DomainAdmins DomainUsers
D. group -N DomainAdmins DomainUsers
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以下哪条命令可以从Linux中删除一个组?
A. groupdm
B. grouprm
C. groupdel
D. delgroup
哪个文件保存了组账户的加密密码?
A. /etc/group
B. /etc/gshadow
C. /etc/gsecure
D. /etc/group.conf
文件/etc/shadow中一行内容如下，数字15853的含义是?il:*:15853:0:99999:7:::
A. The UID of the mail user
B. The number of files owned by mail
C. The date of the last password change (since 1/1/1970)
D. The number of days until the account expires
以下哪个配置文件包含与创建用户和组有关的信息，例如UID和GID的最小值和最大值等?
A. /etc/groupinfo
B. /etc/login.defs
C. /etc/login.info
D. /etc/loginlist
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