yum的使用

1、制作yum源

umount /mount/cdrom

mount -o loop ***.iso /mnt

mount /dev/cdrom /mnt

mount /dev/cdrom /var/ftp/(pub)

/etc/init.d/vsftpd restart

2、编辑yum配置文件

vim /etc/yum.repos.d/rhel-debuginfo.repo

[rhel-debuginfo]
name=Red Hat Enterprise Linux $releasever - $basearch - Debug
baseurl=ftp://192.168.0.201/Server
enabled=1
gpgcheck=0

或

[rhel-debuginfo]
name=Red Hat Enterprise Linux $releasever - $basearch - Debug
baseurl=file:///mnt/Server
enabled=1
gpgcheck=0

3、使用yum命令

yum install mysql* -y

yum erase mysql(此命令非常危险，会卸载相依赖软件包)

yum list mysql 查看所有mysql软件包

yum clean all 清除yum缓存
yum grouplist  列出所有的软件包组

yum groupinstall +(上面列出的项目名称)  安装软件包组，等于安装系统时出现的软件包组的选项。安装系统是不是可以选择所安装的软件包吗，这里就是一样的设置。也可以用命令：system-config-packages

yum groupremove +(上面列出的项目名称) 卸载安装的软件包组

centos 的yum配置文件
[base]
name=CentOS-$releasever - Base
mirrorlist=
#baseurl=
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#released updates
[updates]
name=CentOS-$releasever - Updates
mirrorlist=
#baseurl=
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#packages used/produced in the build but not released
[addons]
name=CentOS-$releasever - Addons
mirrorlist=
#baseurl=
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
mirrorlist=
#baseurl=
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
mirrorlist=
#baseurl=
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib
mirrorlist=
#baseurl=
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5


[c5-media]
name=CentOS-$releasever - Media
baseurl=file:///media/CentOS/
        file:///media/cdrom/
        file:///media/cdrecorder/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5