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一般我们选择安装Centos的最小安装，然后我们在使用好多工具的时候就会报错！wget不会默认被安装。
解决方法：
1.【推荐使用】
[root@DB1 ~]# yum -y install wget
安装完毕即可。
2.
rpm 安装
rpm 下载源地址：http://mirrors.163.com/centos/6.2/os/x86_64/Packages/
下载wget的RPM包：http://mirrors.163.com/centos/6.2/os/x86_64/Packages/wget-1.12-1.4.el6.x86_64.rpm
rpm ivh wget-1.12-1.4.el6.x86_64.rpm 安装即可。
安装另一个SSH客户端：FileZilla。然后传到服务器上安装，这个比较费劲,所以推荐使用第一种方法进行安装！
不过如果yum包也没有安装的话，那就只能用第二种方法了！
[root@localhost /]# yum -y install wget
Loaded plugins: fastestmirror
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): base/7/x86_64/group_gz | 156 kB 00:00:00
(2/4): updates/7/x86_64/primary_db | 2.7 MB 00:00:01
(3/4): extras/7/x86_64/primary_db | 110 kB 00:00:01
(4/4): base/7/x86_64/primary_db | 5.7 MB 00:00:25
Determining fastest mirrors
* base: mirrors.btte.net
* extras: mirrors.cn99.com
* updates: mirrors.cn99.com
Resolving Dependencies
--> Running transaction check
---> Package wget.x86_64 0:1.14-15.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
============================================================================================================================================================================================================
Package Arch Version Repository Size
============================================================================================================================================================================================================
Installing:
wget x86_64 1.14-15.el7 base 547 k
Transaction Summary
============================================================================================================================================================================================================
Install 1 Package
Total download size: 547 k
Installed size: 2.0 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/base/packages/wget-1.14-15.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY ] 0.0 B/s | 144 kB --:--:-- ETA
Public key for wget-1.14-15.el7.x86_64.rpm is not installed
wget-1.14-15.el7.x86_64.rpm | 547 kB 00:00:00
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <[email protected]>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-3.1611.el7.centos.x86_64 (@anaconda)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : wget-1.14-15.el7.x86_64 1/1
Verifying : wget-1.14-15.el7.x86_64 1/1
Installed:
wget.x86_64 0:1.14-15.el7
Complete!
[root@localhost /]#当看到Complete!表示成功安装完成！