CentOS 6 Learning Yum Usage Chapter

CentOS installed in the virtual machine follow the old boy's tutorial install CentOS 6 pick the necessary components, the next step will need to install a few of the Yum tools for operations, But the default installation of CentOS repo source is mirror.centos.org, this server in foreign countries, in order to install the package after the speed and unnecessary update failure, I habitually will be converted to domestic netease or Zhong Ke source.

The premise is that the virtual machine can access the external network, network configuration This article does not elaborate

First, modify the Yum source to mirrors.163.com

1. Enter the folder where the source configuration is stored (I will not back up the original source, directly deleted)

Cd/etc/yum.repos.dfind./! -name "*media.repo" |xargs RM-RF

2. Create a 163.repo file under/ETC/YUM.REPOS.D

Cat >163.repo << eof[base]name=centos-6-x86_64-base-163.combaseurl=http://mirrors.163.com/centos/6/os/ x86_64/enabled=1gpgcheck=0gpgkey= [updates]name=centos-6-x86_64-updates-163.combaseurl=http://mirrors.163.com/ centos/6/updates/x86_64/enabled=1gpgcheck=0gpgkey= [extras]name=centos-6-x86_64-extras-163.combaseurl=http:// Mirrors.163.com/centos/6/extras/x86_64/enabled=1gpgcheck=0gpgkey=eof

Used to use CentOS6.2 to find direct

wget Http://mirrors.163.com/.help/CentOS6-Base-163.repo

Found useless, because the address recorded in this file is http://mirrors.163.com/centos/$releasever/os/$basearch/

The system seemed to have no releasever and Basearch 2 variables, so above I simply wrote Dead version and system architecture number.

Note: The latest version of CentOS 6 at the time of writing this blog is 6.7

HTTP://MIRRORS.163.COM/CENTOS/6.7/OS/X86_64/should be http://mirrors.163.com/centos/6/os/x86_64/'s soft connection.

And when the release of 6.8 version, 6.7 to 6.1 directory of files are removed, only one large version of the package is only one directory is the latest fix bug package, so here Releasever directly write dead 6 the best.

3. Generate cache

Yum Makecache

Note: If you are directly modifying the other source, the source address is changed. This can result in:/var/cache/yum inside the cache of entries and the actual source address is not the same, causing the problem can not be updated. Therefore, it is necessary to understand the old data on this machine after the source is modified.

Use the Yum clean All command.

Yum Clean [Packages|headers|all]

• Packages: will be removed from the downloaded software file

• Headers: Delete the downloaded software file header

• All: Delete all cached data

Second, install the old boy recommended several operations and maintenance kits

Yum Install tree Nmap sysstat lrzsz dos2unix-y perform yum update if you need to update patches

Comments:

TREE #查看目录结构工具;

NMAP #扫描工具;

SYSSTAT #检测系统性能效率的工具, such as CPU utilization, hard disk, network throughput data, etc.;

Lrzsz #上传下载工具;

Dos2unix #将DOS文本转换成LINUX格式;

This article is from the "Smilepad" blog, make sure to keep this source http://smilepad.blog.51cto.com/6094369/1767907

CentOS 6 Learning Yum Usage Chapter