本文阅读量次

1. Ubuntu 的基本使用¶

1.1 dpkg 的使用¶

1.1.1 查看本地都安装了哪些¶

dpkg -l

1.2 HowTo¶

1.2.1 查找软件有哪些版本¶

apt-cache policy libpq5 libpq-dev

libpq5:
  Installed: 16.4-0ubuntu0.24.04.2
  Candidate: 17.0-1.pgdg24.04+1
  Version table:
     17.0-1.pgdg24.04+1 500
        500 https://apt.postgresql.org/pub/repos/apt noble-pgdg/main amd64 Packages
 *** 16.4-0ubuntu0.24.04.2 500
        500 http://mirrors.tencentyun.com/ubuntu noble-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     16.2-1ubuntu4 500
        500 http://mirrors.tencentyun.com/ubuntu noble/main amd64 Packages
libpq-dev:
  Installed: 16.4-0ubuntu0.24.04.2
  Candidate: 17.0-1.pgdg24.04+1
  Version table:
     17.0-1.pgdg24.04+1 500
        500 https://apt.postgresql.org/pub/repos/apt noble-pgdg/main amd64 Packages
 *** 16.4-0ubuntu0.24.04.2 500
        500 http://mirrors.tencentyun.com/ubuntu noble-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     16.2-1ubuntu4 500
        500 http://mirrors.tencentyun.com/ubuntu noble/main amd64 Packages

也可以通过在线站点查找: https://packages.ubuntu.com/ ⧉

1.2.2 安装特定版本¶

基于上边已经找出来的版本，apt install 时增加版本号即可

apt install libpq-dev=16.4-0ubuntu0.24.04.2

1.2.3 安装卸载 Postgrel¶