Ubuntu 之旅 —— 解决sudo: source: command not found错误2022-10-08 21:37:39 $ sudo -s # source /etc/profile 上一篇：示sudo: cd: command not found下一篇：Python pip安装时You are using pip version 9.0.1, however version 18.0 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command.