Update yum.md
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@ -57,7 +57,7 @@ deplist:显示rpm软件包的所有依赖关系。
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**安装**
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```
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```bash
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yum install #全部安装
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yum install package1 #安装指定的安装包package1
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yum groupinsall group1 #安装程序组group1
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@ -65,7 +65,7 @@ yum groupinsall group1 #安装程序组group1
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**更新和升级**
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```
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```bash
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yum update #全部更新
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yum update package1 #更新指定程序包package1
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yum check-update #检查可更新的程序
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@ -88,7 +88,7 @@ yum groupinfo group1 #显示程序组group1信息yum search string 根据关
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**删除程序**
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```
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```bash
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yum remove | erase package1 #删除程序包package1
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yum groupremove group1 #删除程序组group1
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yum deplist package1 #查看程序package1依赖情况
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@ -96,7 +96,7 @@ yum deplist package1 #查看程序package1依赖情况
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**清除缓存**
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```
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```bash
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yum clean packages #清除缓存目录下的软件包
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yum clean headers #清除缓存目录下的 headers
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yum clean oldheaders #清除缓存目录下旧的 headers
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