IPADDR: 172.25.x.100(X 在这里指您的工作站编号)

NETMASK: 255.255.255.0

GATEWAY: 172.25.x.254

DNS: 172.25.254.254

yum源地址为：ftp://172.25.x.250/pub/rhel7.0

1.

在进行考试之前,请先重置根用户密码为 examwestos

2.

更改主机名称为 station.domainX.example.com(X 在这里指您的工作站编号)

[root@desktop Desktop]# hostnamectl set-hostname station.domain49.example.com

3

新建组,名称为 sysadms,指定其 GID 为 600

[root@station Desktop]# groupadd -g 600 sysadms

4

新建用户 tommy,指定 UID 为 2013,配置该用户密码为 redhat

[root@station Desktop]# useradd -u 2013 tommy

[root@station Desktop]# passwd tommy

Changing password for user tommy.

New password:

BAD PASSWORD: The password is shorter than 8 characters

Retype new password:

passwd: all authentication tokens updated successfully.

5

新建用户 Jimmy,,并且禁止该用户交互式登录,配置该用户密码为 redhat

[root@station Desktop]# useradd -s /sbin/nologin Jimmy

[root@station Desktop]# passwd Jimmy

Changing password for user Jimmy.

New password:

BAD PASSWORD: The password is shorter than 8 characters

Retype new password:

passwd: all authentication tokens updated successfully.

6

新建用户 natasha,harry, 并将这两个用户加入到 sysadms 组当中,作为从属组,如果需要,则将用户密码配置为 redhat

[root@station Desktop]# useradd -G sysadms natasha

[root@station Desktop]# useradd -G sysadms harry

[root@station Desktop]# id harry

uid=2016(harry) gid=2016(harry) groups=2016(harry),600(sysadms)

[root@station Desktop]# id natasha

uid=2015(natasha) gid=2015(natasha) groups=2015(natasha),600(sysadms)

7

在/home 目录中创建目录 materials,配置该目录的所属组为 sysadms,要求隶属于 sysadms 组当中的成员对该目录有读写权限,在sysadms目录当中创建的文件或者文件夹,其所属组也

自动继承 sysadms 的所属组

[root@station Desktop]# mkdir /home/materials/

[root@station Desktop]# chgrp sysadms /home/materials/

[root@station Desktop]# chmod g+s /home/materials/

[root@station Desktop]# ll -d /home/materials/

drwxr-sr-x. 2 root sysadms 6 Nov  2 21:59 /home/materials/

拷贝/etc/fstab 文件到/var/tmp 目录中,设置以下需求

[root@station Desktop]# cp /etc/fstab /var/tmp/

使 harry 用户对该文件无任何权限

[root@station Desktop]# setfacl -m u:harry:0 /var/tmp/

使 natasha 对该文件有完全控制权限

[root@station Desktop]# setfacl -m u:natasha:7 /var/tmp/

配置文件所属用户为 root

[root@station Desktop]# chown root /var/tmp/

配置文件所属组为 root

[root@station Desktop]# chgrp root /var/tmp/

其他所有用户对文件拥有读权限

[root@station Desktop]# chmod o+r /var/tmp/

其他所有用户对文件没有执行权限

[root@station Desktop]# chmod o-x /var/tmp/

[root@station Desktop]# getfacl /var/tmp/

getfacl: Removing leading ‘/‘ from absolute path names

# file: var/tmp/

# owner: root

# group: root

# flags: --t

user::rwx

user:natasha:rwx

user:harry:---

group::rwx

mask::rwx

other::rw-

9

设置 NTP 客户端,与172.25.x.254进行时间同步

客户端：

[root@station Desktop]# vim /etc/chrony.conf

[root@station Desktop]#  systemctl stop firewalld

[root@station Desktop]# systemctl disable firewalld

[root@station Desktop]# systemctl restart chronyd.service

服务器：

[root@foundation49 ~]# vim /etc/chrony.conf

[root@foundation49 ~]# systemctl stop firewalld

[root@foundation49 ~]# systemctl disable firewalld

[root@foundation49 ~]# systemctl restart chronyd.service

测试：

[root@station Desktop]# chronyc sources -v

210 Number of sources = 1

10

找出用户组mail 拥有的文件,并且将它们放到/root/findresults 目录中

[root@station Desktop]# find / -group mail

find: ‘/proc/3257’: No such file or directory

find: ‘/proc/3275/task/3275/fd/6’: No such file or directory

find: ‘/proc/3275/task/3275/fdinfo/6’: No such file or directory

find: ‘/proc/3275/fd/6’: No such file or directory

find: ‘/proc/3275/fdinfo/6’: No such file or directory

/var/spool/mail

/var/spool/mail/rpc

/var/spool/mail/student

/var/spool/mail/shengchan

/var/spool/mail/caiwu

/var/spool/mail/jishu

/var/spool/mail/tom

/var/spool/mail/leo

/var/spool/mail/admin

/var/spool/mail/mi

/var/spool/mail/iphone

/var/spool/mail/huawei

/var/spool/mail/root

/var/spool/mail/tommy

/var/spool/mail/Jimmy

/var/spool/mail/natasha

/var/spool/mail/harry

11

[root@station Desktop]# cp -r /var/spool/mail/ /root/findresults

在文件/usr/share/mime/packages/freedesktop.org.xml 中查找所有包含 ich 的行,将找

出的行按照先后顺序拷贝到/root/lines

文件中,/root/lines 文件不包含空格,并且其中行的内容是源文件/usr/share/mime/packages/freedesktop.org.xml 原始行的准确副本

[root@station Desktop]# grep ‘ich‘ /usr/share/mime/packages/freedesktop.org.xml > /root/lines

[root@station Desktop]# vim /root/lines

本文出自 “12147236” 博客，请务必保留此出处http://12157236.blog.51cto.com/12147236/1869134

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