linux怎么看系统版本

1、uname －a （Linux查看版本当前操作系统内核信息）

Linux localhost.localdomain 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 athlon i386 GNU/Linux

2、cat /proc/version （Linux查看当前操作系统版本信息）

Linux version 2.4.20-8 (bhcompile@porky.devel.redhat.com)
(gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #1 Thu Mar 13 17:54:28 EST 2003

3、cat /etc/issue

Red Hat Enterprise Linux AS release 4 (Nahant Update 8)
Kernel /r on an /m

RedHat系列查看：

1、cat /etc/redhat-release

Red Hat Enterprise Linux AS release 4 (Nahant Update 8)

2、lsb_release -a

LSB Version: :core-3.0-ia32:core-3.0-noarch:graphics-3.0-ia32:graphics-3.0-noarch
Distributor ID: RedHatEnterpriseAS
Description: Red Hat Enterprise Linux AS release 4 (Nahant Update 8)
Release: 4
Codename: NahantUpdate8

Debian系列查看：

1、cat /etc/debian_version

9.0

2、cat /etc/os-release

PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

3、hostnamectl

   Static hostname: debian
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 6866ec1d654b4a2ea52d591dc0146d82
           Boot ID: 51bfbc1e197b4d378e95073da0df0288
    Virtualization: xen
  Operating System: Debian GNU/Linux 9 (stretch)
            Kernel: Linux 4.9.0-1-amd64
      Architecture: x86-64

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