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## 7.6 yum更換國內源
**恢復備份：**
```
[[email protected] yum.repos.d]# cp ../yum.repos.d.bak/* .
```
**下載yum源：**
```
[[email protected] yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
```
**改名：**
```
[[email protected] yum.repos.d]# mv CentOS7-Base-163.repo ./CentOS-Base.repo
```
**清除緩存：**
```
[[email protected] yum.repos.d]# yum clean all
```
**重新生成緩存：**
```
[[email protected] yum.repos.d]# yum install zsh
```
***
## 7.7 yum下載rpm包
**安裝擴展源：**
```
[[email protected] ~]# yum install -y epel-release
```
**使用yum下載rpm包：**
**僅下載不安裝：**
```
[[email protected] yum.repos.d]# yum install zsh --downloadonly
```
**查詢rpm包是否安裝：**
```
[[email protected] yum.repos.d]# rpm -q zsh
```
**指定下載路徑：**
```
[[email protected] yum.repos.d]# yum install zsh --downloadonly --downloaddir=/tmp/
```
**將已安裝的軟件下載到指定目錄：**
```
[[email protected] yum.repos.d]# yum reinstall vim-enhanced --downloadonly --downloaddir=/tmp/
```
***
## 7.8 源碼包安裝(上)
> 將源碼包放在 /usr/local/src目錄中
**下載apache:**
```
[[email protected] src]# wget http://mirrors.cnnic.cn/apache/httpd/httpd-2.2.32.tar.gz
```
**解壓：**
```
[[email protected] src]# tar -zxvf httpd-2.2.32.tar.gz
```
**安裝apache:**
```
[[email protected] httpd-2.2.32]# ./configure --prefix=/usr/local/apache2
```
**查看上一條命令運行是否正確：**
```
[[email protected] httpd-2.2.32]# echo $?
1
```
* 非0表示上一條命令運行錯誤
> checking for gcc... no表示gcc編譯器不存在
```
[[email protected] httpd-2.2.32]# make
```
**擴展:**
> 1. 配置yum源優先級 http://www.aminglinux.com/bbs/thread-7168-1-1.html
> 2. 把源碼包打包成rpm包 http://www.linuxidc.com/Linux/2012-09/70096.htm
## 7.9 源碼包安裝(下)
```
[[email protected] httpd-2.2.32]# make install
```
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