四、請總結描述用戶和組管理類命令的使用方法並完成如下練習:
linux(1)、建立組distro,其GID爲2019;
shell(2)、建立用戶mandriva, 其ID號爲1005;基本組爲distro;
app(3)、建立用戶mageia,其ID號爲1100,家目錄爲/home/linux;
ide(4)、給用戶mageia添加密碼,密碼爲mageedu,並設置用戶密碼7天后過時
ui(5)、刪除mandriva,但保留其家目錄;加密
(6)、建立用戶slackware,其ID號爲2002,基本組爲distro,附加組peguin;
spa(7)、修改slackware的默認shell爲/bin/tcsh;
orm(8)、爲用戶slackware新增附加組admins;token
(1)
it
[root@C7-64-Mini ~]# groupadd -g 2019 distro
(2)
[root@C7-64-Mini ~]# useradd -u 1005 -g distro mandriva
[root@C7-64-Mini ~]# id mandriva
uid=1005(mandriva) gid=2019(distro) groups=2019(distro)
(3)
[root@C7-64-Mini ~]# useradd -u 1100 -d /home/linux mageia
[root@C7-64-Mini ~]# id mageia
uid=1100(mageia) gid=1100(mageia) groups=1100(mageia)
[root@C7-64-Mini ~]# ll /home/linux -d
drwx------. 2 mageia mageia 62 Nov 19 21:52 /home/linux
(4)
root@C7-64-Mini ~]# passwd mageia
Changing password for user mageia.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
[root@C7-64-Mini ~]# passwd -i +7 mageia
Adjusting aging data for user mageia.
passwd: Success
[root@C7-64-Mini ~]# cat /etc/shadow | grep mageia
mageia:$6$adlm2OGu$gcAIURRp2D4mqFyB5Rg180GHgY9gP6aWBL3j0kz6abniobGAXC26lX2xODzs1WWo.1pkOCJWm0suFgBzLc1wE.:18219:0:99999:7:7::
(5)
[root@C7-64-Mini ~]# userdel mandriva
[root@C7-64-Mini ~]# ll /home/mandriva -d
drwx------. 2 1005 distro 62 Nov 19 21:50 /home/mandriva
(6)
[root@C7-64-Mini ~]# groupadd peguin
[root@C7-64-Mini ~]# useradd -u 2002 -g distro -G peguin slackware
[root@C7-64-Mini ~]# id slackware
uid=2002(slackware) gid=2019(distro) groups=2019(distro),2020(peguin)
(7)
[root@C7-64-Mini ~]# usermod -s /bin/tcsh slackware
(8)
[root@C7-64-Mini ~]# useradd admins
[root@C7-64-Mini ~]# usermod -G admins slackware
[root@C7-64-Mini ~]# id slackware
uid=2002(slackware) gid=2019(distro) groups=2019(distro),2003(admins)
[root@C7-64-Mini ~]# usermod -G admins,peguin slackware
[root@C7-64-Mini ~]# id slackware
uid=2002(slackware) gid=2019(distro) groups=2019(distro),2020(peguin),2003(admins)