我在尝试安装 Skype 时收到以下错误
Failed to download repository information
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E:The repository 'http://archive.ubuntu.com/ubuntu yakkety Release' does not have a Release file.
W:Updating from such a repository can't be done securely, and is therefore disabled by default.
W:See apt-secure(8) manpage for repository creation and user configuration details.
E:The repository 'http://security.ubuntu.com/ubuntu yakkety-security Release' does no longer have a Release file.
W:Updating from such a repository can't be done securely, and is therefore disabled by default.
W:See apt-secure(8) manpage for repository creation and user configuration details.
E:The repository 'http://in.archive.ubuntu.com/ubuntu yakkety Release' does no longer have a Release file.
W:Updating from such a repository can't be done securely, and is therefore disabled by default.
W:See apt-secure(8) manpage for repository creation and user configuration details.
E:The repository 'http://in.archive.ubuntu.com/ubuntu yakkety-backports Release' does no longer have a Release file.
W:Updating from such a repository can't be done securely, and is therefore disabled by default.
W:See apt-secure(8) manpage for repository creation and user configuration details.
E:The repository 'http://in.archive.ubuntu.com/ubuntu yakkety-updates Release' does no longer have a Release file.
答案1
您正在使用 Ubuntu Yakkety Yak (16.10)，它已不再受支持且已达到 EOL（使用寿命结束）标准。
您需要升级到较新的 Ubuntu 版本。由于 Ubuntu 16.10 将升级到 17.04（也是 EOL），因此您需要升级到 17.10。
您可以通过执行 来实现sudo do-release-upgrade。