一，npm升级自身

root@lhdpc:/usr/local/source# npm -v
6.14.13

root@lhdpc:/usr/local/source# npm install -g npm
/usr/local/soft/node-v14.17.1-linux-x64/bin/npm -> /usr/local/soft/node-v14.17.1-linux-x64/lib/node_modules/npm/bin/npm-cli.js
/usr/local/soft/node-v14.17.1-linux-x64/bin/npx -> /usr/local/soft/node-v14.17.1-linux-x64/lib/node_modules/npm/bin/npx-cli.js
+ npm@7.21.0
added 67 packages from 26 contributors, removed 246 packages and updated 189 packages in 91.916s

root@lhdpc:/usr/local/source# npm -v
7.21.0

说明：刘宏缔的架构森林是一个专注架构的博客，地址：https://www.cnblogs.com/architectforest

         对应的源码可以访问这里获取： https://github.com/liuhongdi/
         或: https://gitee.com/liuhongdi

说明：作者:刘宏缔 邮箱: 371125307@qq.com

二，npm升级@vue/cli

root@lhdpc:~#  npm update -g @vue/cli

三，查看node的版本:

root@lhdpc:/usr/local/source# node -v
v14.17.1 

四，查看linux的版本

liuhongdi@lhdpc:~$ more /etc/os-release 
NAME="Ubuntu"
VERSION="21.04 (Hirsute Hippo)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 21.04"
VERSION_ID="21.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=hirsute
UBUNTU_CODENAME=hirsute