这篇文章将为大家详细讲解有关Linux如何在线安装软件，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

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Linux在线安装相关命令：

yum install：全部安装
yum install <程序包>：安装指定的程序包
yum groupinsall <程序组>：安装程序组
yum -y update：升级所有包，改变软件设置和系统设置，系统版本、内核都升级
yum -y upgrade：升级所有包，不改变软件设置和系统设置，系统版本升级，内核不升级
yum update <程序包>：更新指定的程序包
yum check-update：检查可更新的程序
yum upgrade <程序包>：升级指定的程序包
yum info <程序包>：显示程序包的信息
yum list：显示所有已经安装和可以安装的程序包
yum list <程序包>：显示指定程序包安装情况
yum groupinfo <程序组>：显示程序组的信息
yum search <关键字>：根据关键字查找程序包
yum remove/erase <程序包>：删除程序包
yum groupremove <程序组>：删除程序组
yum deplist <程序包>：查看程序包依赖情况
yum clean <程序包>：清除缓存目录中的程序包
yum clean headers：清除缓存目录下的rpm头文件

-------------------测试网络

[root@bogon bin]# ping www.baidu.com
PING www.a.shifen.com (163.177.151.110) 56(84) bytes of data.
64 bytes from 163.177.151.110: icmp_seq=1 ttl=128 time=8.34 ms
64 bytes from 163.177.151.110: icmp_seq=2 ttl=128 time=9.35 ms
64 bytes from 163.177.151.110: icmp_seq=3 ttl=128 time=9.18 ms
64 bytes from 163.177.151.110: icmp_seq=4 ttl=128 time=8.55 ms
64 bytes from 163.177.151.110: icmp_seq=5 ttl=128 time=8.74 ms
64 bytes from 163.177.151.110: icmp_seq=6 ttl=128 time=10.0 ms
64 bytes from 163.177.151.110: icmp_seq=7 ttl=128 time=9.00 ms
64 bytes from 163.177.151.110: icmp_seq=8 ttl=128 time=10.7 ms
64 bytes from 163.177.151.110: icmp_seq=9 ttl=128 time=12.3 ms
64 bytes from 163.177.151.110: icmp_seq=10 ttl=128 time=9.10 ms
64 bytes from 163.177.151.110: icmp_seq=11 ttl=128 time=59.8 ms
64 bytes from 163.177.151.110: icmp_seq=12 ttl=128 time=10.7 ms
64 bytes from 163.177.151.110: icmp_seq=13 ttl=128 time=10.7 ms

-------------------收搜gcc

[root@bogon ~]# yum search gcc
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: centos.ustc.edu.cn
 * extras: centos.ustc.edu.cn
 * updates: centos.ustc.edu.cn
===================================== N/S Matched: gcc ======================================
gcc-c++.x86_64 : C++ support for GCC
gcc-gnat.x86_64 : Ada 95 support for GCC
gcc-java.x86_64 : Java support for GCC
gcc-objc.x86_64 : Objective-C support for GCC
gcc-objc++.x86_64 : Objective-C++ support for GCC
libgcc.x86_64 : GCC version 4.4 shared support library
libgcc.i686 : GCC version 4.4 shared support library
compat-gcc-34.x86_64 : Compatibility GNU Compiler Collection
compat-gcc-34-c++.x86_64 : C++ support for compatibility compiler
compat-gcc-34-g77.x86_64 : Fortran 77 support for compatibility compiler
gcc.x86_64 : Various compilers (C, C++, Objective-C, Java, ...)
gcc-gfortran.x86_64 : Fortran support
libgcj.i686 : Java runtime library for gcc
libgcj.x86_64 : Java runtime library for gcc
libgcj-devel.i686 : Libraries for Java development using GCC
libgcj-devel.x86_64 : Libraries for Java development using GCC
libgcj-src.x86_64 : Java library sources from GCC4 preview
libgomp.x86_64 : GCC OpenMP v3.0 shared support library
libgomp.i686 : GCC OpenMP v3.0 shared support library
libmudflap.i686 : GCC mudflap shared support library
libmudflap.x86_64 : GCC mudflap shared support library
libmudflap-devel.i686 : GCC mudflap support
libmudflap-devel.x86_64 : GCC mudflap support
libquadmath.x86_64 : GCC __float128 shared support library
Name and summary matches only, use "search all" for everything.
[root@bogon ~]# 

-------------------------gcc安装

[root@bogon ~]# yum -y install gcc
...
Complete!

------------------------查看gcc安装情况

[root@bogon ~]# yum list gcc
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: centos.ustc.edu.cn
 * extras: centos.ustc.edu.cn
 * updates: centos.ustc.edu.cn
Installed Packages
gcc.x86_64                  4.4.7-18.el6                @base
[root@bogon ~]# 

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