自动挂载光驱或本地ISO并配置本地yum源

#!/bin/bash
# ============================================= 
# Author:      <qin>
# Create date: <‎2021‎-‎11‎-‎26‎>for redhat\Centos\openEuler，当前系统的ISO文件直接放在/opt/tool/目录下
# Update date: <2024-‎11‎-04‎>/dev/cdrom存在时优先使用之
# Description: <自动挂载光驱或本地ISO并配置本地yum源>
# 获取 GPGKEYFile 、 ISO 文件名时可能受 $OsDistribution 影响不正确，或许需要人工编辑/etc/yum.repos.d/*.repo文件
# =============================================

#获取系统发行版本
function getOsDistribution(){
    if [[ "$OSTYPE"="linux-gnu" ]]; then
        if [ -f /etc/neokylin-release ]; then
            OsDistribution="neokylin"  #--中标麒麟 
	    elif [ -f /etc/kylin-release ]; then
            OsDistribution="kylin"  #--kylin兼容版 
        elif [ -f /etc/centos-release ]; then
            OsDistribution="CentOS"
        elif [ -f /etc/redhat-release ]; then
            OsDistribution="Redhat"
        elif [ -f /etc/openEuler-release ]; then
            OsDistribution="openEuler"
        elif [ -f /etc/SuSE-release ]; then
            OsDistribution="Suse"
        elif [ -f /etc/arch-release ]; then
            OsDistribution="Arch"
        elif [ -f /etc/mandrake-release ]; then
            echo "Mandrake"
        elif [ -f /etc/debian_version ]; then
            OsDistribution="Ubuntu/Debian"
        else
            OsDistribution="Unknown Linux distribution"
        fi
    elif [[ "$OSTYPE"="darwin"* ]]; then
        OsDistribution="Mac OS (Darwin)"
    elif [[ "$OSTYPE"="freebsd"* ]]; then
        OsDistribution="FreeBSD"
    else
        OsDistribution="Unknown operating system"
    fi
}
getOsDistribution
echo $OsDistribution

#1.获取GPGKEYFile、ISO文件名
if [ "$OsDistribution" = "Unknown Linux distribution" ]
then
    echo "OsDistribution is not get!"
	exit
else  
    GPGKEYFile=$(ls -t /etc/pki/rpm-gpg/RPM-GPG-KEY-${OsDistribution}* | sed -n 1p)
    ISOFile=$(ls -t /opt/tool/${OsDistribution}*.iso | sed -n 1p)
	echo -e "        OS:\033[33m${OsDistribution}\033[0m"
	echo -e "GPGKEYFile:\033[33m${GPGKEYFile}\033[0m"
    echo -e "   ISOFile:\033[33m${ISOFile}\033[0m"
fi

#2.挂载cdrom|ISO
mkdir -p /mnt/${OsDistribution}/
if [ ! -d "/mnt/${OsDistribution}/Packages" ]; then
    if [ -b "/dev/cdrom" ]; then
        mount /dev/sr0 /mnt/${OsDistribution}/
    else 
        mount ${ISOFile} /mnt/${OsDistribution}/
    fi
fi

#3.备份repo
if [ ! -d "/etc/yum.repos.d/bak" ]; then
    cd /etc/yum.repos.d/
    mkdir bak
    mv *.repo ./bak/
fi

#4.配置repo
if [ ! -f "/etc/yum.repos.d/${OsDistribution}-media.repo" ]; then
    cat >/etc/yum.repos.d/${OsDistribution}-media.repo<<EOF
[mnt]
name=${OsDistribution}
baseurl=file:///mnt/${OsDistribution}/
enabled=1
gpgcheck=1
gpgkey=file://${GPGKEYFile}
EOF
fi

#5.刷新yum配置
yum clean all
yum makecache