1) 新建用户natasha,uid为1000,gid为555,备注信息为“master” ?
1.通过vim /etc/passwd 的命令,直接在另一个用户信息下,修改成natasha的用户信息,
因为在home目录下没有natasha的目录,新建natasha目录,
2.通过vim /etc/shadow 的命令,进入用户的密码信息下, 修改用户名,密码不用改动
3.通过vim /etc/group 的命令,进入组信息,修改gid号,与前面已经修改的/etc/passwd的一致,
4.通过vim /etc/gshadow 的命令,进入组密码,组密码不用改动,
5.添加其他隐藏的文件,通过复制/etc/skel/下的4个文件,到natasha,
2) 修改natasha用户的家目录为/Natasha?
3) 查看用户信息配置文件的最后一行
4) 为natasha用户设置密码“123”
命令echo “123” | passwd –stdin natasha
5) 查看用户密码配置文件的最后一行
6) 将natasha用户账户锁定,解锁
8) 新建组police,gid为999
进入/etc/group,通过vim /etc/group,进行修改
9. 新建组police,gid为999
通过vim /etc/group,xijian
查看组配置文件的最后一行
10) 将natasha用户加入police组
usermod -G police natasha
11.修改police组的组名为jingcha
group -n jingcha police
12.删除natasha用户,连家目录和邮箱一起删除
userdel -r natasha
13.删除jingcha组
groupdel -r jingcha
14.在用户的主目录下创建目录test,进入test创建空文件file1
mkdir test
touch file1
15.以长格式形式显示文件信息,注意文件的权限和所属用户和组
16.为文件file1设置权限,使其他用户可以对此文件进行写操作。
chmod o=w file1
17.取消同组用户对文件file1的读取权限,并查看设置结果。
18.用数字表示法为文件file设置权限,所有者可读、可写、可执行,所属组用户和其他用户只具有读和执行的权限。设置完成后查看设置结果
19.用数字形式更改文件file1的权限,使所有者只能读取此文件。其他任何用户都没有权限。查看设置结果。
20.回到上层目录,查看test的权限
21.为其他用户添加对此目录的写权限
chmod o+w test
22.以操作文件的方式,新建一个用户alex
mkdir /home/alex
cp -r /etc/skel /.[!.]*/home/alex
touch /var/spool/mail/alex
chown -R alex:alex /home/alex
23. 新建目录/test/dir,属主为tom,数组为group1,/test目录的权限为777
mkdir test/dir
useradd tom1
groupadd group1
chmod 777 /test
24.新建用户jack,切换到jack用户下,验证jack用户对dir目录的rwx权限(开启另外一个终端,依次修改dir目录的others权限)
useradd jack
su – jack
切换到Jack用户,
25.将jack加入group1组,验证jack用户对dir目录的rwx权限(开启另外一个终端,依次修改dir目录的group权限)
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