1. 官网安装https://www.postgresql.org/download/linux/ubuntu/
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get -y install postgresql-13
2. 安装完毕
zhangjie@zhangjie:~$ sudo -i -u postgres ##超级用户 无密码
postgres@zhangjie:~$ psql ##进入
psql (13.2 (Ubuntu 13.2-1.pgdg20.04+1))
Type "help" for help.
postgres=#
修改postgres 数据库用户密码（默认无）
postgres=# alter user postgres with password 'zhangjie1234'
3.退出 postgresql
postgres=# \q
4. 退出postgres用户
postgres@zhangjie:~$ exit
4.其他
sudo /etc/init.d/postgresql start # 开启
sudo /etc/init.d/postgresql stop # 关闭
sudo /etc/init.d/postgresql restart # 重启
