===== - yum修改为国内镜像源 =====
CentoS 6 停止维护更新日期 2020 年 11 月 30 日 \\ 
CentOS 7 停止维护更新日期 2024 年 6 月 30 日  \\ 
CentOS 8 停止维护更新日期 2029 年 5 月 31 日 \\ 


<code bash>
cd /etc/yum.repos.d
mv CentOS-Base.repo CentOS-Base.repo.bak 
wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo  
#wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo  
#wget -O CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
#wget -O CentOS-Base.repo http://mirrors.163.com/.help/CentOS6-Base-163.repo

yum clean all 
yum makecache
</code> 



清华大学源： \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.5/isos/i386/ \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/isos/  \\ 


清华大学的源更全:  \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos/  \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-altarch/ \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-vault/   \\ 


repodata 路径举例： \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/os/i386/repodata/ \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/os/x86_64/repodata/ \\ 

阿里云镜像： \\ 
http://mirrors.aliyun.com/centos-vault/6.10/


==== - repo file ====

目前centos6停止更新了，使用国内镜像的repo也是有问题的，建议直接使用本地iso文件yum源的方式来 yum install。

<file bash  CentOS-Base.repo.tsinghua>
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the 
# remarked out baseurl= line instead.
#
#

[base]
name=CentOS-6.10 - Base
#mirrorlist=http://mirrorlist.centos.org/?release=6.10&arch=$basearch&repo=os&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#released updates 
[updates]
name=CentOS-6.10 - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=6.10&arch=$basearch&repo=updates&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful
[extras]
name=CentOS-6.10 - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=6.10&arch=$basearch&repo=extras&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.10 - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=6.10&arch=$basearch&repo=centosplus&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/centosplus/$basearch/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#contrib - packages by Centos Users
[contrib]
name=CentOS-6.10 - Contrib
#mirrorlist=http://mirrorlist.centos.org/?release=6.10&arch=$basearch&repo=contrib&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/contrib/$basearch/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
</file>



https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/os/i386/repodata/ \\ 
https://mirrors.tuna.tsinghua.edu.cn/centos-vault/6.10/os/x86_64/repodata/ \\ 


===== - 使用iso文件搭建本地源 =====

1. 使用如下命令新建挂载点并挂载

<code bash>
sudo mkdir /media/iso
sudo mkdir /media/dvd1
sudo mkdir /media/dvd2
sudo mv  /home/user/CentOS-6.5-x86_64-bin-DVD1.iso   /media/iso
sudo mv  /home/user/CentOS-6.5-x86_64-bin-DVD2.iso   /media/iso
#挂载centos安装盘(两个iso)
sudo mount -o loop /media/iso/CentOS-6.5-x86_64-bin-DVD1.iso  /media/dvd1/
sudo mount -o loop /media/iso/CentOS-6.5-x86_64-bin-DVD2.iso  /media/dvd2/

</code>

<color #ed1c24>注：如果刚刚装好的系统，nfs功能可能是没有安装的，即不能通过NFS网络文件系统挂载远程的ISO文件，此时只能使用光盘。如果是虚拟机安装，那么直接在虚拟机设置里加载光盘iso文件，即可，它一般会自动mount iso。如果是物理实体机，可能就真的需要一个光驱了。。。。</color>

2. 修改yum源配置，把CentOS-Base.repo文件备份
<code>
cd /etc/yum.repos.d/
####   将除CentOS-Media.repo之外的其它repo文件全部mv成.bak文件备份，全部使用本地iso源。

mv CentOS-Base.repo CentOS-Base.repo.bak
...
</code>

<code>
文件：CentOS-Media.repo
#修改如下内容
enabled=1
#将baseurl中的路径修改为 file://media/dvd1和file://media/dvd2
#保存退出

baseurl=file:///media/dvd1/    #根据实际mount目录修改
      file:///media/dvd2/
gpgckeck=1
enabled=1   #此处要enable=1使能
</code>

3. 清空yum已存在的所有源信息,重新生成缓存
<code>
yum clean all;  yum makecache

</code>

4. 查看本地源的所有软件
<code>
yum list 
</code>




===== - yum EPEL源 =====

EPEL的全称叫 Extra Packages for Enterprise Linux 。EPEL是由 Fedora 社区打造，为 RHEL 及衍生发行版如 CentOS、Scientific Linux 等提供高质量软件包的项目。装上了 EPEL之后，就相当于添加了一个第三方源。

以安装xfce为例：
<code>
根据系统版本打开相应的链接：
CentOS 5 32位：http://download.fedoraproject.org/pub/epel/5/i386/
CentOS 5 64位：http://download.fedoraproject.org/pub/epel/5/x86_64/
CentOS 6 32位：http://download.fedoraproject.org/pub/epel/6/i386/
CentOS 6 64位：http://download.fedoraproject.org/pub/epel/6/x86_64/
查找“epel”，应该会找到一个“epel-release-X-X.noarch.rpm”的软件包。下载，安装之。

$ wget http://download.Fedoraproject.org/pub/epel/6/x86_64/epel-release-6-5.noarch.rpm
$ sudo rpm -ivh epel-release-6-5.noarch.rpm
$ sudo yum search xfce
$ sudo yum groupinfo xfce
$ sudo yum groupinstall xfce
$ sudo yum groupinstall Fonts    （可选安装）
然后用xfce4-session就可以启动了，比如加到.vnc的xstartup里。

</code>


https://computingforgeeks.com/create-local-centos-7-centos-6-mirrors/
===== - yum install list =====

<code bash>

yum install -y tree
yum install -y gvim

yum install -y rpcbind nfs-utils

yum install -y autoconf
yum install -y zlib
yum install -y zlib-devel

yum install -y glibc.i686
yum install -y zlib.i686 


yum install -y libstdc++.so.6

yum install -y gcc
yum install -y gcc-c++

yum install -y inkscape*

yum install -y dos2unix

yum install -y asciidoc*
yum install -y lib64tcl*
yum install -y libstdc*

yum install -y ncurses-libs*

yum install -y xterm*

yum install -y xmlto*

yum install -y redhat-lsb*
yum install -y perl-ExtUtils-CBuilder perl-ExtUtils-MakeMaker
yum install -y tk zlib-devel openssl-devel perl cpio expat-devel gettext-devel

yum install -y git*

yum install -y ntfs-3g

yum install -y libtiff libtiff-devel libtiff*
yum install -y *libmng*
yum install -y *libcrypt*
yum install -y *libgpg*
yum install -y *libbsd*


yum install -y ksh
yum install -y lightdm

yum install -y libXScrnSaver

yum install -y libX11*
yum install -y libmx*
yum install -y libXrandr*


</code>




===== - 其它软件升级 =====

tcl需要重新安装tcl8.6版本，-- 8.5版本不支持
<code tcl>format "b" 3</code>


===== - 其它 =====

1、在64系统里执行32位程序如果出现/lib/ld-linux.so.2: bad ELF interpreter: No such file or directory，安装下glic即可

sudo yum install -y glibc.i686

2、error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory

sudo yum install -y zlib.i686 

{{tag> yum}}