html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video { margin: 0; padding: 0; border: 0 }
body { font-family: Helvetica, arial, freesans, clean, sans-serif; font-size: 14px; line-height: 1.6; color: #333; background-color: #fff; padding: 20px; max-width: 960px; margin: 0 auto }
body>*:first-child { margin-top: 0 !important }
body>*:last-child { margin-bottom: 0 !important }
p,blockquote,ul,ol,dl,table,pre { margin: 15px 0 }
h1,h2,h3,h4,h5,h6 { margin: 20px 0 10px; padding: 0; font-weight: bold }
h1 tt,h1 code,h2 tt,h2 code,h3 tt,h3 code,h4 tt,h4 code,h5 tt,h5 code,h6 tt,h6 code { font-size: inherit }
h1 { font-size: 28px; color: #000 }
h2 { font-size: 24px; border-bottom: 1px solid #ccc; color: #000 }
h3 { font-size: 18px }
h4 { font-size: 16px }
h5 { font-size: 14px }
h6 { color: #777; font-size: 14px }
body>h2:first-child,body>h1:first-child,body>h1:first-child+h2,body>h3:first-child,body>h4:first-child,body>h5:first-child,body>h6:first-child { margin-top: 0; padding-top: 0 }
a:first-child h1,a:first-child h2,a:first-child h3,a:first-child h4,a:first-child h5,a:first-child h6 { margin-top: 0; padding-top: 0 }
h1+p,h2+p,h3+p,h4+p,h5+p,h6+p { margin-top: 10px }
a { color: #4183C4; text-decoration: none }
a:hover { text-decoration: underline }
ul,ol { padding-left: 30px }
ul li>:first-child,ol li>:first-child,ul li ul:first-of-type,ol li ol:first-of-type,ul li ol:first-of-type,ol li ul:first-of-type { margin-top: 0px }
ul ul,ul ol,ol ol,ol ul { margin-bottom: 0 }
dl { padding: 0 }
dl dt { font-size: 14px; font-weight: bold; font-style: italic; padding: 0; margin: 15px 0 5px }
dl dt:first-child { padding: 0 }
dl dt>:first-child { margin-top: 0px }
dl dt>:last-child { margin-bottom: 0px }
dl dd { margin: 0 0 15px; padding: 0 15px }
dl dd>:first-child { margin-top: 0px }
dl dd>:last-child { margin-bottom: 0px }
pre,code,tt { font-size: 12px; font-family: Consolas, "Liberation Mono", Courier, monospace }
code,tt { margin: 0 0px; padding: 0px 0px; white-space: nowrap; border: 1px solid #eaeaea; background-color: #f8f8f8 }
pre>code { margin: 0; padding: 0; white-space: pre; border: none; background: transparent }
pre { background-color: #f8f8f8; border: 1px solid #ccc; font-size: 13px; line-height: 19px; overflow: auto; padding: 6px 10px }
pre code,pre tt { background-color: transparent; border: none }
kbd { background-color: #DDDDDD; background-image: linear-gradient(#F1F1F1, #DDDDDD); background-repeat: repeat-x; border-color: #DDDDDD #CCCCCC #CCCCCC #DDDDDD; border-style: solid; border-width: 1px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; line-height: 10px; padding: 1px 4px }
blockquote { border-left: 4px solid #DDD; padding: 0 15px; color: #777 }
blockquote>:first-child { margin-top: 0px }
blockquote>:last-child { margin-bottom: 0px }
hr { clear: both; margin: 15px 0; height: 0px; overflow: hidden; border: none; background: transparent; border-bottom: 4px solid #ddd; padding: 0 }
table th { font-weight: bold }
table th,table td { border: 1px solid #ccc; padding: 6px 13px }
table tr { border-top: 1px solid #ccc; background-color: #fff }
table tr:nth-child(2n) { background-color: #f8f8f8 }
img { max-width: 100% }

作业一：RPM命令

1. 挂载光盘文件到/media 目录

   mount -t auto /dev/cdrom /media

2. 进去/media目录下的Packages目录

   cd /media/Packages

   

3. 查看系统已安装的所有rpm包

   rpm -qa

   

4. 查看系统是否安装dhcp软件包

   rpm -qa | grep dhcp

   

5. 安装dhcp软件包

   rpm -ivh dhclient-4.2.5-47.el7.centos.x86_64.rpm

   

6. 查看dhcp软件包的信息

   rpm -qip dhclient-4.2.5-47.el7.centos.x86_64.rpm
   

   

7. 看dhcp软件包中所包含的所有文件

   rpm -qlp dhclient-4.2.5-47.el7.centos.x86_64.rpm

   

8. 查看/bin/ls文件是由哪个软件包产生

   rpm -qf /bin/ls

   

9. 卸载dhcp软件包

   rpm -e dhclient-4.2.5-47.el7.centos.x86_64 --nodeps

作业二：yum命令

0.利用本地IOS镜像rpm包制作yum源

mkdir /etc/backup
mv /etc/yum.repos.d/* /etc/backup/      //备份yum配置
cat  /etc/yum.repos.d/myyum.repo        //创建自己的配置文件
[cx2c]
name=myyumsource
baseurl=file:///cx2c
gpgcheck=0

cp  /media/Packages/* /cx2c/           //copy IOS镜像里的rpm包
mkdir /cx2c/repoodata && cp -R /media/repodata/* /cx2c/repodata/
yum clean all                          //清除yum缓存
yum repolist

yum list 查看添加源成功

1. 自定义yum仓库：createrepo

   安装createrepo命令

   yum install createrepo
   

   创建源的存放路径

   mkdir /yum/centos/7/x86_64
   

   从搜狐镜像站下载rpm软件包

   wget -r -c -nH http://mirrors.sohu.com/centos/7/os/x86_64/
   

   初始化repodata信息

   createrepo -p -d -o   /yum/centos/7/x86_64/centos/7/os/x86_64  /yum/centos/7/x86_64/centos/7/os/x86_64
   

   增加Local.repo源配置文件

   cd /etc/yum.repos.d/
   cat Local.repo
   [cx2c]
   name=cx2c
   baseurl=file:///yum/centos/7/x86_64/centos/$releasever/os/$basearch/
   enable=0
   gpgcheck=0
   gpgkey=
   

   查看本地yum源是否增加成功 ::成功！

   yum repolist
   

   

2. 自定义repo文件

   见上文

3. 安装卸载httpd软件包：

   yum install https
   yum –y remove httpd
   

   

   

4. 使用yum安装组件‘KDE 桌面‘

   yum groupinstall ‘KDE Plasma Workspace‘          //本机最小化安装所以先略过这步
   

   

5. 掌握使用yum删除组件‘KDE 桌面‘

   yum –y groupremov  ‘KDE Plasma Workspace‘
   

6. 掌握清除yum缓存

   yum clean all
   

7. 使用yum查找软件包

   yum search zlib-*
   

作业三：源码安装python

// readline-devel python shell里 方向键可用
// 机器默认是2.7，安装完之后需要把python命令链接到3.6 

yum -y install zlib zlib-devel gcc readline-devel
wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tar.xz
xz -d Python-3.6.1.tar.xz
tar -xvf Python-3.6.1.tar
cd Python-3.6.1/
./configure
make all
make install
rm /bin/python
ln -s /usr/local/bin/python3.6 /bin/python

作业四：samba服务

略