1. centos安装python3(blog+tar解包)
2. yum upgrade (两个文件配置)
3. python-virtualenv 安装及操作
virtualenv wechat_con --python=3.6
source ./bin/activate
deactivate
4. nginx
systemctl start nginx.service
systemctl stop nginx.service
systemctl status nginx.service
nginx端口被占用服务打开失败
ps -e | grep nginx
kill -9 占用服务ID
5. 包管理
yum install package_name
yum remove package_name
yum list installed
pip install package
pip uninstall package
pip list