N：忽略目录’/etc/apt/apt.conf.d/’中的’50unattended-upgrades.ucf-dist’文件，因为它的文件扩展名无效
昨天我升级了发行版，今天当我使用apt-get安装任何东西或更新时，我收到一个错误：
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
据我所知，当一些新的配置/设置与旧配置/设置混合时会发生此错误。 所以我尝试通过移动到文件夹ls -l /etc/apt/apt.conf.d/来调试它
total 52 -rw-r--r-- 1 root root 82 May 19 07:59 00CDMountPoint -rw-r--r-- 1 root root 40 May 19 07:59 00trustcdrom -rw-r--r-- 1 root root 769 Sep 2 23:56 01autoremove -r--r--r-- 1 root root 1936 Sep 25 11:56 01autoremove-kernels -rw-r--r-- 1 root root 628 Jan 4 2015 01autoremove-postgresql -rw-r--r-- 1 root root 202 Sep 13 02:17 20listchanges -rw-r--r-- 1 root root 1040 Dec 9 2014 20packagekit -rw-r--r-- 1 root root 1438 Sep 16 16:46 50appstream -rw-r--r-- 1 root root 3945 Jun 29 2015 50unattended-upgrades -rw-r--r-- 1 root root 4072 Sep 24 19:57 50unattended-upgrades.ucf-dist -rw-r--r-- 1 root root 182 Mar 19 2015 70debconf -rw-r--r-- 1 root root 142 Oct 6 2014 80debtags
看起来像文件50unattended-upgrades.ucf-dist存在。 现在我的问题是，如果我使用rm 50unattended-upgrades.ucf-dist那么它会导致任何死亡事件吗？ 我有点害怕在这里使用rm，因为扩展名为ucf-dist 。 我在互联网和公共论坛上进行了研究，人们正在写关于使用gconf-cleaner ，但还没试过！
更新1：正如评论中所建议的那样，我将cat 50unattended-upgrades.ucf-dist的输出
// Unattended-Upgrade::Origins-Pattern controls which packages are // upgraded. // // Lines below have the format format is "keyword=value,...". A // package will be upgraded only if the values in its metadata match // all the supplied keywords in a line. (In other words, omitted // keywords are wild cards.) The keywords originate from the Release // file, but several aliases are accepted. The accepted keywords are: // a,archive,suite (eg, "stable") // c,component (eg, "main", "crontrib", "non-free") // l,label (eg, "Debian", "Debian-Security") // o,origin (eg, "Debian", "Unofficial Multimedia Packages") // n,codename (eg, "jessie", "jessie-updates") // site (eg, "http.debian.net") // The available values on the system are printed by the command // "apt-cache policy", and can be debugged by running // "unattended-upgrades -d" and looking at the log file. // // Within lines unattended-upgrades allows 2 macros whose values are // derived from /etc/debian_version: // ${distro_id} Installed origin. // ${distro_codename} Installed codename (eg, "jessie") Unattended-Upgrade::Origins-Pattern { // Codename based matching: // This will follow the migration of a release through different // archives (eg from testing to stable and later oldstable). // "o=Debian,n=jessie"; // "o=Debian,n=jessie-updates"; // "o=Debian,n=jessie-proposed-updates"; // "o=Debian,n=jessie,l=Debian-Security"; // Archive or Suite based matching: // Note that this will silently match a different release after // migration to the specified archive (eg testing becomes the // new stable). // "o=Debian,a=stable"; // "o=Debian,a=stable-updates"; // "o=Debian,a=proposed-updates"; "origin=Debian,codename=${distro_codename},label=Debian-Security"; }; // List of packages to not update (regexp are supported) Unattended-Upgrade::Package-Blacklist { // "vim"; // "libc6"; // "libc6-dev"; // "libc6-i686"; }; // This option allows you to control if on a unclean dpkg exit // unattended-upgrades will automatically run // dpkg --force-confold --configure -a // The default is true, to ensure updates keep getting installed //Unattended-Upgrade::AutoFixInterruptedDpkg "false"; // Split the upgrade into the smallest possible chunks so that // they can be interrupted with SIGUSR1. This makes the upgrade // a bit slower but it has the benefit that shutdown while a upgrade // is running is possible (with a small delay) //Unattended-Upgrade::MinimalSteps "true"; // Install all unattended-upgrades when the machine is shuting down // instead of doing it in the background while the machine is running // This will (obviously) make shutdown slower //Unattended-Upgrade::InstallOnShutdown "true"; // Send email to this address for problems or packages upgrades // If empty or unset then no email is sent, make sure that you // have a working mail setup on your system. A package that provides // 'mailx' must be installed. Eg "user@example.com" //Unattended-Upgrade::Mail "root"; // Set this value to "true" to get emails only on errors. Default // is to always send a mail if Unattended-Upgrade::Mail is set //Unattended-Upgrade::MailOnlyOnError "true"; // Do automatic removal of new unused dependencies after the upgrade // (equivalent to apt-get autoremove) //Unattended-Upgrade::Remove-Unused-Dependencies "false"; // Automatically reboot *WITHOUT CONFIRMATION* if // the file /var/run/reboot-required is found after the upgrade //Unattended-Upgrade::Automatic-Reboot "false"; // Automatically reboot even if there are users currently logged in. //Unattended-Upgrade::Automatic-Reboot-WithUsers "true"; // If automatic reboot is enabled and needed, reboot at the specific // time instead of immediately // Default: "now" //Unattended-Upgrade::Automatic-Reboot-Time "02:00"; // Use apt bandwidth limit feature, this example limits the download // speed to 70kb/sec //Acquire::http::Dl-Limit "70";
请参阅.ucf-dist文件的来源和目的的这种解释 。 这意味着您可以忽略通知（这是N:前缀代表的含义）或删除所述文件。
在删除文件之前，请确保它不包含您可能仍需要的任何软件包。 将其与系统上当前处于活动状态的那个进行比较：
diff /etc/apt/apt.conf.d/50unattended-upgrades.ucf-old /etc/apt/apt.conf.d/50unattended-upgrades
如果您确定不再需要任何内容，则可以忽略此文件或将其删除。 要删除文件运行：
sudo rm /etc/apt/apt.conf.d/50unattended-upgrades.ucf-dist
当我从14.04升级到16.04时，这也发生在我身上，在升级安装期间，我被提示在原始（由我修改） 50unattended-upgrades文件或包更新中包含的原始文件之间进行选择，我当然选择保留前任的。
在安装之后，我的系统中出现了未调用的文件50unattended-upgrades.ucf-dist ，在我快速浏览一下以检查文件的旧版本是否有任何重大更改后，很明显没有任何文件差异，所以我只是删除它。
最重要的是，如果您对当前版本的50个无人值守升级感到满意，可以摆脱它。