有時，我們需要下載一個rpm包，只是下載下來，拷貝給其他機器使用，前面也介紹過yum安裝rpm包的時候，首先得下載這個rpm包然後再去安裝，所以使用yum完全可以做到只下載而不安裝。

（1）首先要安裝 yum-downloadonly

[[email protected] ~]# yum install -y yum-plugin-downloadonly.noarch

如果你的CentOS是5.x版本，則需要安裝yum-downloadonly.noarch這個包。

（2）下載一個rpm包而不安裝

[[email protected] ~]# yum install 包名 -y --downloadonly

這樣雖然下載了，但是並沒有保存到我們想要的目錄下，那麽如何指定目錄呢？

（3）下載到指定目錄

[[email protected]~]#yum install 包名 -y --downloadonly --downloaddir=/usr/local/src

下載一個rpm包：

[[email protected] ~]# yum install -y yum-presto.noarch --downloadonly --downloaddir=/usr/local/src/ Loaded plugins: downloadonly, fastestmirror, security Loading mirror speeds from cached hostfile * base: mirrors.btte.net * extras: mirrors.btte.net * updates: mirrors.btte.net Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package yum-presto.noarch 0:0.6.2-1.el6 will be installed --> Processing Dependency: deltarpm >= 3.4-2 for package: yum-presto-0.6.2-1.el6.noarch --> Running transaction check ---> Package deltarpm.i686 0:3.5-0.5.20090913git.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: yum-presto noarch 0.6.2-1.el6 base 32 k Installing for dependencies: deltarpm i686 3.5-0.5.20090913git.el6 base 73 k Transaction Summary ================================================================================ Install 2 Package(s) Total download size: 105 k Installed size: 257 k Downloading Packages: -------------------------------------------------------------------------------- Total 43 MB/s | 105 kB 00:00 exiting because --downloadonly specified [[email protected]