我需要为 Gnome 安装互联网速度监控此帖子说明当我尝试运行时，sudo apt-add-repository ppa:fixnix/netspeed我得到了这个：
so@so-notebook:~$ sudo apt-add-repository ppa:fixnix/netspeed
Network speed indicator for Unity.
More info: https://launchpad.net/~fixnix/+archive/ubuntu/netspeed
Press [ENTER] to continue or Ctrl-c to cancel adding it.
Err:1 http://ppa.launchpad.net/team-xbmc/ppa/ubuntu bionic InRelease
Connection failed [IP: 91.189.95.83 80]
Err:2 http://shaggytwodope.github.io/repo ./ InRelease
Connection failed [IP: 185.199.111.153 80]
Hit:3 http://archive.canonical.com/ubuntu bionic InRelease
Hit:4 http://apt.keepsolid.com/ubuntu bionic InRelease
Ign:5 http://us.archive.ubuntu.com/ubuntu saucy-updates InRelease
Hit:6 http://ppa.launchpad.net/alessandro-strada/ppa/ubuntu bionic InRelease
Hit:7 http://archive.canonical.com bionic InRelease
Err:8 http://us.archive.ubuntu.com/ubuntu saucy-updates Release
404 Not Found [IP: 91.189.91.26 80]
Get:9 http://mirror.us-tx.kamatera.com/ubuntu bionic InRelease [242 kB]
Get:10 https://mega.nz/linux/MEGAsync/xUbuntu_18.04 ./ InRelease [1,310 B]
Hit:11 http://ppa.launchpad.net/audio-recorder/ppa/ubuntu bionic InRelease
Get:12 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Err:13 http://ppa.launchpad.net/daniel-marynicz/filemanager-actions/ubuntu bionic InRelease
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Get:15 http://mirror.us-tx.kamatera.com/ubuntu bionic-updates InRelease [88.7 kB]
Err:16 http://ppa.launchpad.net/fixnix/netspeed/ubuntu bionic InRelease
Connection failed [IP: 91.189.95.83 80]
Ign:17 http://mirror.us-tx.kamatera.com/ubuntu bionic/universe Sources
Err:18 http://dl.google.com/linux/chrome/deb stable InRelease
Connection failed [IP: 216.58.208.78 80]
Ign:19 http://mirror.us-tx.kamatera.com/ubuntu bionic/restricted Sources
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Err:22 http://ppa.launchpad.net/freecad-maintainers/freecad-daily/ubuntu bionic InRelease
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Ign:24 http://mirror.us-tx.kamatera.com/ubuntu bionic/main Sources
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Err:27 http://ppa.launchpad.net/gezakovacs/pdfocr/ubuntu bionic InRelease
Connection failed [IP: 91.189.95.83 80]
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Err:45 http://ppa.launchpad.net/remmina-ppa-team/remmina-next/ubuntu bionic InRelease
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Err:47 http://ppa.launchpad.net/slgobinath/uget-chrome-wrapper/ubuntu bionic InRelease
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Err:49 http://ppa.launchpad.net/stebbins/handbrake-releases/ubuntu bionic InRelease
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Hit:50 http://ppa.launchpad.net/teejee2008/ppa/ubuntu bionic InRelease
Hit:51 http://ppa.launchpad.net/thierry-f/fork-michael-gruz/ubuntu bionic InRelease
Err:52 http://ppa.launchpad.net/tractor-team/tractor/ubuntu bionic InRelease
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Err:54 http://ppa.launchpad.net/ubuntuhandbook1/lives/ubuntu bionic InRelease
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Reading package lists... Done
E: The repository 'http://us.archive.ubuntu.com/ubuntu saucy-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
在该输出中，我看到有一些其他 ppa 无法在终端中访问，但是当我将 ppa 复制到 Firefox 浏览器中时，我发现我可以像这样连接到该 ppa：
。此外由于我国和 ISP 方面的审查，我可以访问许多 Ubuntu 服务器，但我不认为这可能是因为这个原因，所以我在这里询问。
更新：
我的操作系统版本是：
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04
Codename: bionic
和 ：
$ cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.3 LTS"
NAME="Ubuntu"
VERSION="18.04.3 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.3 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
谢谢。
答案1
我喜欢在没有 Python 开销的情况下做到这一点apt-add-repository。此外，它还能更好地了解实际发生的事情。
首先删除安装的内容apt-add-repository：
apt-add-repository --remove ppa:fixnix/netspeed
然后手动添加 apt 存储库：
echo "deb http://ppa.launchpad.net/fixnix/netspeed/ubuntu/ bionic main" | tee /etc/apt/sources.list.d/netspeed.list
添加 apt 密钥：
apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 1C043150AF3B453
做：
apt-get update
并且您应该看不到有关netspeed存储库的错误。
好了。安装你的软件包。