使用shell 检测操作系统版本信息

思路：

使用/etc/os-release中的信息，

同时调用uname -？得到内核信息

测试与ubuntu20和centos7.9

function checkOS() {
    echo "{"
    strList=''

    if [[ -e /etc/os-release ]]; then
        source /etc/os-release
        
        strList=${strList}""ID": "$ID", "
        strList=${strList}""VERSION_ID" : "$VERSION_ID", "
        strList=${strList}""NAME": "$NAME", "
        strList=${strList}""VERSION": "$VERSION","
        strList=${strList}""PRETTY_NAME": "$PRETTY_NAME", "    
    fi
     
   
     kernel_name=`uname -s`
     kernel_vers=`uname -v`
     kernel_real=`uname -r`
     kernel_arch=`uname -p`
     kernel_os=`uname -o`
     strList=${strList}""kernel": "$kernel_name", "
     strList=${strList}""kernel_ver": "$kernel_vers", "
     strList=${strList}""kernel_rel": "$kernel_real", "
     strList=${strList}""kernel_arch": "$kernel_arch", "
     strList=${strList}""kernel_os": "$kernel_os", "



    var=${strList%??}
    echo ${var}
    echo "}"
}

checkOS

ubuntu20.04结果

{
    "ID":"ubuntu",
    "VERSION_ID":"20.04",
    "NAME":"Ubuntu",
    "VERSION":"20.04.4 LTS (Focal Fossa)",
    "PRETTY_NAME":"Ubuntu 20.04.4 LTS",
    "kernel":"Linux",
    "kernel_ver":"#49~20.04.1-Ubuntu SMP Wed May 18 18:44:28 UTC 2022",
    "kernel_rel":"5.13.0-44-generic",
    "kernel_arch":"x86_64",
    "kernel_os":"GNU/Linux"
}

centos7.9 结果：

{
    "ID":"centos",
    "VERSION_ID":"7",
    "NAME":"CentOS Linux",
    "VERSION":"7 (Core)",
    "PRETTY_NAME":"CentOS Linux 7 (Core)",
    "kernel":"Linux",
    "kernel_ver":"#1 SMP Tue Nov 30 15:51:32 UTC 2021",
    "kernel_rel":"3.10.0-1160.49.1.el7.x86_64",
    "kernel_arch":"x86_64",
    "kernel_os":"GNU/Linux"
}