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sudo apt-get upgrade 错误

tag-icon • tag-icon apt package-management software-sources
sudo apt-get upgrade 错误

升级 Ubuntu 时出现此错误：

$ sudo apt-get upgrade
error Malformed line 1 in source list /etc/apt/sources.list (type) E: The list of sources could not be read

源列表中的第 1 行如下：

123#deb cdrom:[Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release amd64 (20170801)]/ xenial main restricted

答案1

将该行从：

123#deb cdrom:[Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release amd64 (20170801)]/ xenial main restricted

到：

#deb cdrom:[Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release amd64 (20170801)]/ xenial main restricted

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