问题:
昨天我升级了发行版，今天我使用 apt-get 安装任何东西或者更新，我得到了一个错误：
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
就我所知，当一些新的配置/设置与旧的配置混淆时，这个错误就发生了。 所以我试图通过移动到文件夹 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 50unattended-upgrades.ucf-dist的文件出现了。 我的问题是，如果我使用 rm 50unattended-upgrades.ucf-dist，那么它是否会导致？ 我不敢在这里使用 rm，因为扩展是 ucf-dist。 我研究了互联网和 public 论坛，人们写关于使用 gconf-cleaner的文章，但没有尝试 ！
更新 1: 按照注释中的建议，我将输出 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 (e.g. 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 (e.g. 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. E.g."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";
回答 1:
请看这个的起源和目的的解释，ucf的分布式文件。 这意味着你可以忽略通知( 这就是 N: 前缀代表的含义) 或者删除所说的文件。
删除文件之前，请确保它不包含任何你可能仍然需要的软件包。 系统中当前处于活动状态的项进行比较：
diff/etc/apt/apt.conf.d/50unattended-upgrades.ucf-old/etc/apt/apt.conf.d/50unattended-upgrades
如果你确定不再需要任何内容，你可以忽略这里文件或者删除它。 若要删除文件运行，请执行下列操作：
sudo rm/etc/apt/apt.conf.d/50unattended-upgrades.ucf-dist
回答 2:
当升级到 16.04时，我还提示用户在升级安装过程中选择原始的( 由我修改) 文件或者软件包更新中包含的原始文件，当然我选择保留以前的。
我系统安装了文件 50unattended-upgrades.ucf-dist，在我快速查看文件的旧版本之后，我检查了它是否有任何改变，所以我只是删除了它。
如果你对当前版本的 50unattended-upgrades满意的话，你就可以摆脱它了。
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