当我输入 sudo apt-get update 我得到这个输出
Hit:1 http://br.archive.ubuntu.com/ubuntu focal InRelease
Hit:2 https://repo.steampowered.com/steam stable InRelease
Get:3 http://br.archive.ubuntu.com/ubuntu focal-updates InRelease [111 kB]
Hit:4 http://dl.google.com/linux/chrome/deb stable InRelease
Get:5 http://br.archive.ubuntu.com/ubuntu focal-backports InRelease [98,3 kB]
Hit:6 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:7 http://ppa.launchpad.net/teejee2008/ppa/ubuntu focal InRelease
Get:8 http://br.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [318 kB]
Get:9 http://br.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [190 kB]
Get:10 http://br.archive.ubuntu.com/ubuntu focal-updates/main Translation-en [119 kB]
Get:11 http://br.archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [196 kB]
Get:11 http://br.archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [196 kB]
Get:11 http://br.archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [196 …