10/21.22 练习题

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复习部分:

1、查看80天以前的日期，重定向到文件/mnt/datafile，并查看80天以后的日期，追加到文件/mnt/datafile。

2、配置vim的配置文件，使其拥有以下功能：显示行号、鼠标可以操纵光标位置。

vim /etc/virmc //修改vim的配置文件

3、新建用户redhat，用户说明为“redhat User”，并设置密码为redhat，该用户首次登陆需修改密码。

[root@foudation7 ~]# useradd redhat //创建用户

[root@foudation7 ~]# password redhat //设置密码

bash: password: command not found...

[root@foudation7 ~]# passwd redhat

Changing password for user redhat.

New password:

BAD PASSWORD: The password is shorter than 8 characters

Retype new password:

passwd: all authentication tokens updated successfully.

[root@foudation7 ~]# usermod -c "redhat User" redhat //设置用户说明“redhat User”

[root@foudation7 ~]# chage -d 0 redhat //修改使得首次登陆需要修改秘密

[kiosk@foudation7 ~]$ su - redhatsystemctl restart network

Password:

You are required to change your password immediately (root enforced) //提示修改密码

Changing password for redhat.

(current) UNIX password:

4、给redhat用户授权，可无密码创建用户westos，指定uid=1008，gid=1008，但不能删除westos用户。

[root@foudation7 ~]$ hostname //查询我本台主机的名字

[root@foudation7 ~]# visudo //编写配置文件

redhat foudation7.example.com=(root) NOPASSWD:/usr/sbin/useradd//在配置文件中写入这个内容允许redhat以root用户身份执行useradd命令并且不需要密码

[root@foudation7 ~]# groupadd 1008 //创建组

[root@foudation7 ~]# su - redhat //切换到redhat用户用户

[redhat@foudation7 ~]# sudo useradd westos -u 1008 -g 1008// 创建用户westos，指定uid=1008，gid=1008

5、找出cpu使用量排在前五的pid，并重定向到文件/mnt/pidfile中。

[root@foudation7 ~]# ps ax -o %cpu,pid --sort -%cpu| head -6 |grep PID -v

1.1 2914

0.7 2382

0.6 3550

0.3 3599

0.2 3102

[root@foudation7 ~]# ps ax -o pid --sort -%cpu| head -6 >>/mnt/pidfile

6、打包压缩/mnt下的文件为tar.gz格式，并无密码发送到真机kiosk用户的桌面，不忽略链接文件。

1.tar cvf /mnt/mnt.tar /mnt/ //将/mnt/的东西打包压缩放到/mnt/下名字为mnt.tar

2.[kiosk@foudation7 ~]$ ssh-keygen //为kiosk用户生成key认证方式

Generating public/private rsa key pair.

Enter file in which to save the key (/home/kiosk/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/kiosk/.ssh/id_rsa.

Your public key has been saved in /home/kiosk/.ssh/id_rsa.pub.

The key fingerprint is:

2d:18:ca:59:0c:da:4f:3a:18:48:87:4c:a8:5c:18:3c kiosk@foudation7.example.com

The key's randomart image is:

+--[ RSA 2048]----+

|=++.. |

|oE.+ o |

|+ = . = |

|.. + B o . |

| . * o S . |

| . . |

| |

+-----------------+

[kiosk@foudation7 ~]$ cd /home/kiosk/.ssh/

[kiosk@foudation7 .ssh]$ ls

authorized_keys id_rsa id_rsa.pub known_hosts

[kiosk@foudation7 .ssh]$ scp id_rsa root@172.25.254.24：/root/.ssh/ //把钥匙发给desktop

[kiosk@foudation7 .ssh]$ ssh-copy-id -i id_rsa.pub kiosk@172.25.254.7 //添加锁

在desktop里面 rsync -l /mnt/mnt.tar kiosk@172.25.254.7:/home/kiosk/Desktop //无密码发送到真机kiosk用户的桌面，不忽略链接文件

此次作业：

1、在server主机系统中创建set-ip-tool命令要求如下

*)会自动显示ifconfig命令的输出

*)系统ip被设定为：172.25.254.X

*)系统网关被设定为：172.25.254.250

*)系统dns被设定为：172.25.254.250

cd /bin/ //切换到bin目录下

vim set-ip-tool //编写一个set-ip-tool

实现效果如上

2、在虚拟机上安装Ubuntu操作系统，Redhat操作系统;

Redhat系统

(1)打开虚拟机管理器

（2）选择本地镜像

（3）选择本地镜像位置

（4）设置内存大小

（5）名称

（6）开始安装

（7）设置语言，选择最小化安装，手动配置分区

ubuntu系统

（1）打开虚拟机管理器

（2）选择镜像

3、搭建第三方yum仓库，可用yum安装google(自行上网搜软件包)，wps-office软件。

[root@foundation90 software]# ls

google-chrome-stable_current_x86_64.rpm wps-office-9.1.0.4961-1.a18p1.x86_64.rpm

[root@foundation90 software]# createrepo -v /software/ ##扫描第三方库

Spawning worker 0 with 1 pkgs

Spawning worker 1 with 1 pkgs

Spawning worker 2 with 0 pkgs

Spawning worker 3 with 0 pkgs

Worker 0: reading google-chrome-stable_current_x86_64.rpm

Worker 1: reading wps-office-9.1.0.4961-1.a18p1.x86_64.rpm

Workers Finished

Saving Primary metadata

Saving file lists metadata

Saving other metadata

Generating sqlite DBs

Starting other db creation: Wed Oct 25 10:30:25 2017

Ending other db creation: Wed Oct 25 10:30:25 2017

Starting filelists db creation: Wed Oct 25 10:30:25 2017

Ending filelists db creation: Wed Oct 25 10:30:25 2017

Starting primary db creation: Wed Oct 25 10:30:25 2017

Ending primary db creation: Wed Oct 25 10:30:26 2017

Sqlite DBs complete

[root@foundation90 software]# ls

google-chrome-stable_current_x86_64.rpm repodata wps-office-9.1.0.4961-1.a18p1.x86_64.rpm ##repodata 成功

[root@foundation90 software]# vim /etc/yum.repos.d/software.repo ##编写第三方repo文件

[root@foundation90 software]# cat /etc/yum.repos.d/software.repo

[westos]

name=westos

baseurl=file:///software

gpgcheck=0

[root@foundation90 software]# yum clean all ##清理yum缓存

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

Cleaning repos: rhel-dvd smplayer westos

Cleaning up everything

[root@foundation90 software]# yum repolist

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

rhel-dvd | 4.1 kB 00:00:00

smplayer | 2.9 kB 00:00:00

westos | 2.9 kB 00:00:00

(1/4): westos/primary_db | 5.0 kB 00:00:00

(2/4): rhel-dvd/group_gz | 136 kB 00:00:00

(3/4): smplayer/primary_db | 23 kB 00:00:00

(4/4): rhel-dvd/primary_db | 3.6 MB 00:00:00

repo id repo name status

rhel-dvd westos 4,620

smplayer smplayer 30

westos westos 2

repolist: 4,652 ##可以看到westos库，代表扫描到软件包

[root@foundation90 software]# yum search google

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

================================================================ N/S matched: google =================================================================

google-chrome-stable.x86_64 : Google Chrome

[root@foundation90 software]# yum search wps

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

================================================================== N/S matched: wps ==================================================================

wps-office.x86_64 : WPS Office Suite

Name and summary matches only, use "search all" for everything.

[root@foundation90 software]# yum install wps-office.x86_64 ##安装wps软件包

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

Resolving Dependencies

--> Running transaction check

---> Package wps-office.x86_64 0:9.1.0.4961-1.a18p1 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

======================================================================================================================================================

Package Arch Version Repository Size

======================================================================================================================================================

Installing:

wps-office x86_64 9.1.0.4961-1.a18p1 westos 64 M

Transaction Summary

======================================================================================================================================================

Install 1 Package

Total download size: 64 M

Installed size: 274 M

Is this ok [y/d/N]: y

Downloading packages:

Running transaction check

Running transaction test

Transaction test succeeded

Running transaction

Installing : wps-office-9.1.0.4961-1.a18p1.x86_64 1/1

Verifying : wps-office-9.1.0.4961-1.a18p1.x86_64 1/1

Installed:

wps-office.x86_64 0:9.1.0.4961-1.a18p1

Complete!

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