查看Linux系统版本的方法 && checkOsVersion.sh

首先介绍一下常用的查看Linux系统版本的几种方法

方法1

#  lsb_release   -a

LSB Version:    :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch

Distributor ID: CentOS

Description:    CentOS Linux release 7.1.1503 (Core) 

Release:        7.1.1503

Codename:       Core

方法2

#  cat /proc/version

Linux version 3.10.0-229.el7.x86_64 ([email protected]) (gcc version 4.8.2 20140120 (Red Hat 4.8.2-16) (GCC) ) #1 SMP Fri Mar 6 11:36:42 UTC 2015

方法3

#  uname -a

Linux jfvm 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

方法4

#  cat /etc/redhat-release 

CentOS Linux release 7.1.1503 (Core) 

方法5

#  rpm -qa | grep centos-release

centos-release-7-2.1511.el7.centos.2.10.x86_64

#  rpm -qa | grep redhat-release

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编写shell脚本检查当前Linux系统版本

方法1：

#!/bin/sh

#os=`uname -r | gawk -F. '{print $4}'`

#if [ "$os" != "el7" ];then

#echo $(date "+%Y-%m-%d %H:%M:%S")   "Donnot support linux system ${os}"

#exit 1

#fi

该方法存在缺陷， 只能检查这种：

Linux test 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

而下面这种就无法正确检查：

Linux test 3.10.0-229.28.2.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

改进检查方法，直接正则检查：

#!/bin/sh

os=`uname -r`

os_check_reg=".*el7.*"

if [[ ! "$os" =~ $os_check_reg ]]; then

  echo $(date "+%Y-%m-%d %H:%M:%S")   "not support linux system ${os}"

else

  echo "ok, support system!"

exit 1

fi