查看/etc/issue文件：

$cat /etc/issue
Linux Mint 19.1 Tessa \n \l

使用hostnamectllinux命令：

$hostnamectl 
   Static hostname: onitroad
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 82929df7ee394b73b81252fe3b4e5020
           Boot ID: e5ea25b82b234fdcb098c323c78ec740
    Virtualization: oracle
  Operating System: Linux Mint 19.1
            Kernel: Linux 4.15.0-20-generic
      Architecture: x86-64

查看 MintLinux特有文件“/etc/linuxmint/Info”：

$cat /etc/linuxmint/info
RELEASE=19.1
CODENAME=tessa
EDITION="Cinnamon"
DESCRIPTION="Linux Mint 19.1 Tessa"
DESKTOP=Gnome
TOOLKIT=GTK
NEW_FEATURES_URL=https://www.linuxmint.com/rel_tessa_cinnamon_whatsnew.php
RELEASE_NOTES_URL=https://www.linuxmint.com/rel_tessa_cinnamon.php
USER_GUIDE_URL=https://www.linuxmint.com/documentation.php
GRUB_TITLE=Linux Mint 19.1 Cinnamon

使用lsb_release命令获取版本信息：

$lsb_release -crid
Distributor ID: LinuxMint
Description:    Linux Mint 19.1 Tessa
Release:        19.1
Codename:       tessa

查看“/etc/lsb-selife”和“/etc/OS-redise”，也可以获取有关计算机上安装的Linux Mint版本的信息。