我只是想知道我如何做到上述。这是我/etc/apt/apt.conf.d/50unattended-upgrades目前的样子：
// Automatically upgrade packages from these (origin:archive) pairs
//
// Note that in Ubuntu security updates may pull in new dependencies
// from non-security sources (e.g. chromium). By allowing the release
// pocket these get automatically pulled in.
Unattended-Upgrade::Allowed-Origins {
"${distro_id}:${distro_codename}";
"${distro_id}:${distro_codename}-security";
// Extended Security Maintenance; doesn't necessarily exist for
// every release and this system may not have it installed, but if
// available, the policy for updates is such that unattended-upgrades
// should also install from here by default.
// "${distro_id}ESM:${distro_codename}";
"${distro_id}:${distro_codename}-updates";
// "${distro_id}:${distro_codename}-proposed";
// "${distro_id}:${distro_codename}-backports";
};
// Python regular expressions, matching packages to exclude from upgrading
Unattended-Upgrade::Package-Blacklist {
// The following matches all packages starting with linux-
// "linux-";
// Use $ to explicitely define the end of a package name. Without
// the $, "libc6" would match all of them.
// "libc6$";
// "libc6-dev$";
// "libc6-i686$";
// Special characters need escaping
// "libstdc\+\+6$";
// The following matches packages like xen-system-amd64, xen-utils-4.1,
// xenstore-utils and libxenstore3.0
// "(lib)?xen(store)?";
// For more information about Python regular expressions, see
// https://docs.python.org/3/howto/regex.html
};
// This option controls whether the development release of Ubuntu will be
// upgraded automatically. Valid values are "true", "false", and "auto".
Unattended-Upgrade::DevRelease "auto";
// 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 "true";
// Split the upgrade into the smallest possible chunks so that
// they can be interrupted with SIGTERM. 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 updates when the machine is shutting down
// instead of doing it in the background while the machine is running.
// This will (obviously) make shutdown slower.
// Unattended-upgrades increases logind's InhibitDelayMaxSec to 30s.
// This allows more time for unattended-upgrades to shut down gracefully
// or even install a few packages in InstallOnShutdown mode, but is still a
// big step back from the 30 minutes allowed for InstallOnShutdown previously.
// Users enabling InstallOnShutdown mode are advised to increase
// InhibitDelayMaxSec even further, possibly to 30 minutes.
//Unattended-Upgrade::InstallOnShutdown "false";
// 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. "[email protected]"
Unattended-Upgrade::Mail "redacted";
// 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";
// Remove unused automatically installed kernel-related packages
// (kernel images, kernel headers and kernel version locked tools).
Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";
// Do automatic removal of newly unused dependencies after the upgrade
Unattended-Upgrade::Remove-New-Unused-Dependencies "true";
// Do automatic removal of unused packages after the upgrade
// (equivalent to apt-get autoremove)
Unattended-Upgrade::Remove-Unused-Dependencies "true";
// Automatically reboot *WITHOUT CONFIRMATION* if
// the file /var/run/reboot-required is found after the upgrade
Unattended-Upgrade::Automatic-Reboot "true";
// Automatically reboot even if there are users currently logged in
// when Unattended-Upgrade::Automatic-Reboot is set to true
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";
// Enable logging to syslog. Default is False
Unattended-Upgrade::SyslogEnable "true";
// Specify syslog facility. Default is daemon
// Unattended-Upgrade::SyslogFacility "daemon";
// Download and install upgrades only on AC power
// (i.e. skip or gracefully stop updates on battery)
Unattended-Upgrade::OnlyOnACPower "true";
// Download and install upgrades only on non-metered connection
// (i.e. skip or gracefully stop updates on a metered connection)
Unattended-Upgrade::Skip-Updates-On-Metered-Connections "true";
// Verbose logging
Unattended-Upgrade::Verbose "true";
// Print debugging information both in unattended-upgrades and
// in unattended-upgrade-shutdown
Unattended-Upgrade::Debug "true";
编辑：我有太多的来源，无法在这里全部列出，但其中一行的示例是：
deb [arch=amd64] http://repository.veeam.com/backup/linux/agent/dpkg/debian/public stable veeam
只需将该字符串添加到Unattended-Upgrade::Allowed-Origins列表中即可实现该包的无人值守升级吗？
答案1
顺便说一句，关于这个问题的更深入的讨论是在这个答案
从https://github.com/mvo5/unattended-upgrades/blob/master/README.md#setup：
Allowed-Origins是形式为的简单模式列表"<origin>:<archive>";。
...以及究竟用什么来替代<origin>和<archive>可以从各自的o=...和a=...输出中推断出来：
sudo apt-cache policy | grep 'o=[^,]*.a=[^,]*'
例如。
release o=jenkins.io ,a=binary ,c= release o=Docker ,a=xenial ,l=Docker CE,c=stable,b=amd64 release v=16.04, o=Ubuntu ,a=xenial-security ,n=xenial,l=Ubuntu,c=universe,b=amd64 release v=16.04, o=Ubuntu ,a=xenial-security ,n=xenial,l=Ubuntu,c=main,b=amd64 release v=16.04, o=Ubuntu ,a=xenial-updates ,n=xenial,l=Ubuntu,c=universe,b=amd64 release v=16.04, o=Ubuntu ,a=xenial-updates ,n=xenial,l=Ubuntu,c=main,b=amd64 release v=16.04, o=Ubuntu ,a=xenial ,n=xenial,l=Ubuntu,c=universe,b=amd64 release v=16.04, o=Ubuntu ,a=xenial ,n=xenial,l=Ubuntu,c=main,b=amd64
（添加空格来模拟的grep输出突出显示）
由此得出的结论是，如果你愿意将以下内容添加"*:*";到Unattended-Upgrade::Allowed-Origins { ... }列表中，那么全部（取决于他们的优先事项) 列出的源sudo apt-cache policy将进行无人值守升级。