问:如何修复 apt-get update 错误镜像同步正在进行中?
我在 debian 10 上安装 postgresql-client.9.4 时遇到了困难。 printf "deb http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main" > /etc/apt/sources.list.d/pgdg.list wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - apt-get update && apt-get ins...