我在从本地 apt-repo 安装软件包时遇到了一些问题。我按照以下指南设置了 apt repo，它似乎运行正常。当我运行 update-debs 命令和 apt-get update 时，它似乎将附加软件包添加到 Packages.gz 文件中。
https://help.ubuntu.com/community/Repositories/Personal
问题是，当我尝试安装该软件包时，系统提示我找不到该软件包。如果我运行apt-cache search $package_name
我收到的具体错误信息是E: Unable to locate package
附加信息
apt-get update 的输出
ops@ops-repo:~$ sudo apt-get update
Ign file: ./ InRelease
Ign file: ./ Release.gpg
Ign file: ./ Release
Ign http://mirrors.linode.com trusty InRelease
Ign http://mirrors.linode.com trusty-updates InRelease
Ign file: ./ Translation-en_US
Ign http://mirrors.linode.com trusty-backports InRelease
Ign file: ./ Translation-en
Hit http://mirrors.linode.com trusty Release.gpg
Hit http://mirrors.linode.com trusty-updates Release.gpg
Hit http://mirrors.linode.com trusty-backports Release.gpg
Hit http://mirrors.linode.com trusty Release
Hit http://mirrors.linode.com trusty-updates Release
Hit http://mirrors.linode.com trusty-backports Release
Hit http://mirrors.linode.com trusty/main Sources
Hit http://mirrors.linode.com trusty/restricted Sources
Hit http://mirrors.linode.com trusty/universe Sources
Hit http://mirrors.linode.com trusty/multiverse Sources
Hit http://mirrors.linode.com trusty/main amd64 Packages
Hit http://mirrors.linode.com trusty/restricted amd64 Packages
Hit http://mirrors.linode.com trusty/universe amd64 Packages
Hit http://mirrors.linode.com trusty/multiverse amd64 Packages
Hit http://mirrors.linode.com trusty/main i386 Packages
Hit http://mirrors.linode.com trusty/restricted i386 Packages
Ign http://security.ubuntu.com trusty-security InRelease
Hit http://mirrors.linode.com trusty/universe i386 Packages
Hit http://mirrors.linode.com trusty/multiverse i386 Packages
Hit http://mirrors.linode.com trusty/main Translation-en
Hit http://mirrors.linode.com trusty/multiverse Translation-en
Hit http://mirrors.linode.com trusty/restricted Translation-en
Hit http://mirrors.linode.com trusty/universe Translation-en
Hit http://security.ubuntu.com trusty-security Release.gpg
Hit http://mirrors.linode.com trusty-updates/main Sources
Hit http://mirrors.linode.com trusty-updates/restricted Sources
Hit http://mirrors.linode.com trusty-updates/universe Sources
Hit http://mirrors.linode.com trusty-updates/multiverse Sources
Hit http://mirrors.linode.com trusty-updates/main amd64 Packages
Hit http://mirrors.linode.com trusty-updates/restricted amd64 Packages
Hit http://mirrors.linode.com trusty-updates/universe amd64 Packages
Hit http://mirrors.linode.com trusty-updates/multiverse amd64 Packages
Hit http://mirrors.linode.com trusty-updates/main i386 Packages
Hit http://security.ubuntu.com trusty-security Release
Hit http://mirrors.linode.com trusty-updates/restricted i386 Packages
Hit http://mirrors.linode.com trusty-updates/universe i386 Packages
Hit http://mirrors.linode.com trusty-updates/multiverse i386 Packages
Hit http://mirrors.linode.com trusty-updates/main Translation-en
Hit http://mirrors.linode.com trusty-updates/multiverse Translation-en
Hit http://mirrors.linode.com trusty-updates/restricted Translation-en
Hit http://mirrors.linode.com trusty-updates/universe Translation-en
Hit http://mirrors.linode.com trusty-backports/main Sources
Hit http://mirrors.linode.com trusty-backports/restricted Sources
Hit http://mirrors.linode.com trusty-backports/universe Sources
Hit http://mirrors.linode.com trusty-backports/multiverse Sources
Hit http://mirrors.linode.com trusty-backports/main amd64 Packages
Hit http://mirrors.linode.com trusty-backports/restricted amd64 Packages
Hit http://mirrors.linode.com trusty-backports/universe amd64 Packages
Hit http://mirrors.linode.com trusty-backports/multiverse amd64 Packages
Hit http://mirrors.linode.com trusty-backports/main i386 Packages
Hit http://mirrors.linode.com trusty-backports/restricted i386 Packages
Hit http://mirrors.linode.com trusty-backports/universe i386 Packages
Hit http://security.ubuntu.com trusty-security/main Sources
Hit http://mirrors.linode.com trusty-backports/multiverse i386 Packages
Hit http://mirrors.linode.com trusty-backports/main Translation-en
Hit http://mirrors.linode.com trusty-backports/multiverse Translation-en
Hit http://mirrors.linode.com trusty-backports/restricted Translation-en
Hit http://mirrors.linode.com trusty-backports/universe Translation-en
Ign http://mirrors.linode.com trusty/main Translation-en_US
Hit http://security.ubuntu.com trusty-security/restricted Sources
Ign http://mirrors.linode.com trusty/multiverse Translation-en_US
Ign http://mirrors.linode.com trusty/restricted Translation-en_US
Ign http://mirrors.linode.com trusty/universe Translation-en_US
Hit http://security.ubuntu.com trusty-security/universe Sources
Hit http://security.ubuntu.com trusty-security/multiverse Sources
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages
Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages
Hit http://security.ubuntu.com trusty-security/main i386 Packages
Hit http://security.ubuntu.com trusty-security/restricted i386 Packages
Hit http://security.ubuntu.com trusty-security/universe i386 Packages
Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages
Hit http://security.ubuntu.com trusty-security/main Translation-en
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Reading package lists... Done
我添加了一个ops.list目录，其中/etc/apt/sources.d/包含以下行：
deb file:/usr/local/debs ./
我相信这就是 apt-get update 顶部谈到时所引用的内容Ign file:。
答案1
我经历过类似的事情，最后发现安装软件包可以正常工作，即使apt-cache policy package说它不可用，并抛出了您报告的错误消息，但是用 而N:不是E:。 （但是，apt-cache search package为我返回空输出，而不是错误消息。）
运行strace后apt-cache发现，它只打开了其中的一部分文件/var/lib/apt/lists——具体来说，它似乎绕过了我的私人仓库，可能是因为它的文件名有点搞笑（myserver.internal_%7etripleee_repo_Packages）。