为了了解有关Ubuntu及其软件包的更多信息，我想删除所有非必需的软件包，以便可以在需要时安装所需的组件，并知道它们的作用。
我正在使用命令dpkg --clear-selections，apt-get dselect-upgrade为此。我还通过设置再次安装apt libstdc++6 (due to apt) install-info (due to grep)来稍微修改选择（以某种方式dpkg认为它们不是必需的，但是apt-get抱怨）。
可以吗，还是不好？如果可以，我该如何处理dpkg中状态为“ deinstall”的大量软件包？
另外，我在VPS模板上执行此操作，因此无法控制最初安装的软件包。
Answers:
使用以下命令，您可以获得按优先级分类的已安装软件包的列表：
dpkg-query -Wf '${Package;-40}${Priority}\n' | sort -b -k2,2 -k1,1
Debian策略手册中给出了优先级的描述。
在我的安装中，获得以下内容（我仅显示必需的，重要的和标准的软件包）：
apt important
aptitude important
apt-utils important
bsdmainutils important
cron important
debconf-i18n important
dmidecode important
gnupg important
gpgv important
groff-base important
info important
install-info important
iptables important
iputils-ping important
isc-dhcp-client important
isc-dhcp-common important
libapt-inst1.3 important
libapt-pkg4.11 important
libboost-iostreams1.46.1 important
libcwidget3 important
libept1 important
libgdbm3 important
libgdbm3 important
libgudev-1.0-0 important
libnewt0.52 important
libpcre3 important
libpipeline1 important
libpopt0 important
libreadline6 important
libssl1.0.0 important
libsysfs2 important
libusb-0.1-4 important
libxapian22 important
logrotate important
man-db important
manpages important
medibuntu-keyring important
nano important
netbase important
net-tools important
python important
readline-common important
rsyslog important
ubuntu-extras-keyring important
ubuntu-keyring important
vim-common important
vim-tiny important
wget important
whiptail important
adduser required
base-files required
base-passwd required
bash required
bsdutils required
busybox-initramfs required
coreutils required
cpio required
dash required
debconf required
debianutils required
diffutils required
dpkg required
e2fslibs required
e2fsprogs required
findutils required
gcc-4.6-base required
gcc-4.6-base required
grep required
gzip required
hostname required
ifupdown required
initscripts required
insserv required
iproute required
klibc-utils required
libacl1 required
libacl1 required
libattr1 required
libattr1 required
libblkid1 required
libbz2-1.0 required
libc6 required
libc6 required
libc-bin required
libcomerr2 required
libcomerr2 required
libdb5.1 required
libdbus-1-3 required
libdevmapper1.02.1 required
libdrm2 required
libdrm-intel1 required
libdrm-nouveau1a required
libdrm-radeon1 required
libffi6 required
libgcc1 required
libgcc1 required
libglib2.0-0 required
libklibc required
liblocale-gettext-perl required
liblzma2 required
libmount1 required
libncurses5 required
libncursesw5 required
libnih1 required
libnih-dbus1 required
libpam0g required
libpam-modules required
libpam-modules-bin required
libpam-runtime required
libpciaccess0 required
libpcre3 required
libplymouth2 required
libpng12-0 required
libselinux1 required
libselinux1 required
libslang2 required
libss2 required
libssl1.0.0 required
libstdc++6 required
libstdc++6 required
libtext-charwidth-perl required
libtext-iconv-perl required
libtext-wrapi18n-perl required
libtinfo5 required
libudev0 required
libuuid1 required
libuuid1 required
locales required
login required
lsb-base required
lzma required
makedev required
mawk required
module-init-tools required
mount required
mountall required
multiarch-support required
ncurses-base required
ncurses-bin required
passwd required
perl-base required
plymouth required
procps required
python2.7-minimal required
python-minimal required
sed required
sensible-utils required
sysvinit-utils required
sysv-rc required
tar required
tzdata required
udev required
upstart required
ureadahead required
util-linux required
xz-utils required
zlib1g required
zlib1g required
at standard
bash-completion standard
bc standard
bind9-host standard
dc standard
dnsutils standard
file standard
ftp standard
gettext-base standard
less standard
libbind9-60 standard
libcap2 standard
libdb5.1 standard
libdns69 standard
libedit2 standard
libevent-2.0-5 standard
libgc1c2 standard
libgcrypt11 standard
libgcrypt11 standard
libgnutls26 standard
libgnutls26 standard
libgpg-error0 standard
libgpg-error0 standard
libgpm2 standard
libgssapi-krb5-2 standard
libgssapi-krb5-2 standard
libidn11 standard
libidn11 standard
libisc62 standard
libk5crypto3 standard
libk5crypto3 standard
libkeyutils1 standard
libkeyutils1 standard
libkrb5-3 standard
libkrb5-3 standard
libkrb5support0 standard
libkrb5support0 standard
libldap-2.4-2 standard
libldap-2.4-2 standard
liblockfile1 standard
liblwres60 standard
libmagic1 standard
libpci3 standard
libsasl2-2 standard
libsasl2-2 standard
libsqlite3-0 standard
libsqlite3-0 standard
libtasn1-3 standard
libtasn1-3 standard
libxml2 standard
lsof standard
m4 standard
make standard
mime-support standard
mlocate standard
openssh-client standard
patch standard
pciutils standard
perl standard
perl-modules standard
python-apt standard
python-central standard
telnet standard
time standard
ucf standard
wamerican standard
whois standard
该基本系统被定义为仅含有系统需要和重要的软件包。
标记为标准的软件包并不是操作系统所必需的，但是如果您错过它们，则会遇到麻烦。
因此，要删除所有不需要的软件包（optional和extra），可以执行以下命令：
sudo apt-get --simulate purge $(dpkg-query -Wf '${Package;-40}${Priority}\n' |
awk '$2 ~ /optional|extra/ { print $1 }')
我添加了--simulate安全性选项，然后查看apt提示。
奇怪的是，它要求也删除了一些必需的程序包：e2fsprogs，util-linux，hostname和upstart，所以需要重新安装这些程序包。我会提前下载软件包（apt-get download <packages>），以避免以后出现网络问题。
另请注意，要使Wifi正常工作，您可能需要一些可选或额外的包装，请在上述步骤中将其删除。
实际上，在来自不同提供商的大量ubuntu VPS上……我发现原始方法（如下）非常脆弱。在某些系统上，它们将不会重新启动，因为以下方法将删除KVM类型虚拟化上的内核（而openvz则大多数情况下起作用）。我寻找的不是替代每次破解都修补补丁的方法，而是寻找一种替代方法。
一种似乎（到目前为止）更好的方法如下：
# just in case we are retrying and apt is in a bad state
dpkg --configure -a
# DEBIAN_FRONTEND=noninteractive is useful for scripting.
# prevents getting prompts that will hang our script.
# ubuntu-minimal is a meta package that depends on the packages
# in ubuntu-minimal install.
# Need aptitude to autoremove everything we don't depend on.
DEBIAN_FRONTEND=noninteractive \
apt-get --assume-yes install aptitude ubuntu-minimal
# mark all packages as automatically installed except
# ubuntu-minimal, kernel, systemd and openssh.
# For some reason systemd isn't part of ubuntu-minimal.
# Any dependencies of these four packages will be kept.
# All others that aren't dependencies will be removed since
# we have told apt they are automatically installed
# (ie we don't care about them unless we need them as a dep)
DEBIAN_FRONTEND=noninteractive \
aptitude --assume-yes markauto \
'~i!?name(ubuntu-minimal~|linux-generic~|systemd~|openssh-server)'
# purge all removed packages that were not purged.
# removes leftover config/cruft.
DEBIAN_FRONTEND=noninteractive \
aptitude --assume-yes purge '~c'
到目前为止，这在我对openvz和kvm类型虚拟化的测试中都非常有效。我将其用作第一步“引导”，以最小化映像，然后运行配置管理以所需方式设置VPS。我通常会在此步骤之后和配置管理之前进行重新启动，以确保我们没有破坏任何东西。
我没有进行apt清理或自动清理，因为我的配置管理将安装软件包，因此无论如何我都必须再次运行apt-get update。如果您试图在磁盘空间方面构建最小的映像，那么当然您可以做更多的事情。
如果在最小化后丢失DNS解析，还有一个提示...在Ubuntu 16.04上，安装ubuntu-minimal已安装的resolvconf，由于某种原因之前未安装过。该软件包（安装后）将确保将/etc/resolv.conf设置为动态生成，并且包括将其转换为符号链接。如果您的VPS具有静态网络配置（即，在/ etc / network / interfaces中静态配置的接口/ IP和在/etc/resolv.conf中静态配置的DNS），那么这将破坏您的dns分辨率。也就是说，您将能够ping 8.8.8.8，但不能google.com（未知主机）。我有几个VPS提供商以这种方式配置VPS，而不是通过dhcp提供IP / DNS。要解决此问题，我在上述最小化之前添加了一个检查，如下所示：
if [ ! -L "/etc/resolv.conf" ]; then
mkdir -p /etc/resolvconf/resolv.conf.d/
cp /etc/resolv.conf /etc/resolvconf/resolv.conf.d/tail
fi
基本上：如果当前的/etc/resolv.conf不是符号链接，则假定我们具有来自VPS提供程序的静态配置。将文件复制到用于resolvconf的特殊“ tail”文件中。“ tail”文件是一个特殊的文件，resolvconf将附加到它生成的/etc/resolv.conf中。这样可以确保您不会丢失内置在VPS中的静态DNS配置。
跟随@enzotib的答案...
奇怪的是，必需/重要/基本包将具有可选/额外的依赖关系。会认为，如果那些是硬性依赖关系（与推荐或建议相反），那么那些依赖关系也将被设置为依赖于它们的软件包的最高优先级。
在Ubuntu 16.04上，尝试@enzotib的方法时，在删除列表中出现了很多重要的软件包（apt，sudo，passwd，adduser）。恶意黑客使用脚本逐个清除了可选/额外软件包列表，以查看哪些可选/额外软件包清除触发了删除必需或重要软件包的操作。
例如：就我而言，清除可选软件包libaudit1将清除许多重要内容。
root@ro01:~# apt-get purge libaudit1
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
anacron bind9-host build-essential cpp cpp-5 dpkg-dev fakeroot g++ g++-5 gcc
gcc-5 gcc-5-base initramfs-tools-bin libalgorithm-diff-perl
libalgorithm-diff-xs-perl libalgorithm-merge-perl libapt-pkg5.0 libasan2
libatomic1 libbind9-140 libc-dev-bin libc6 libc6-dev libcc1-0 libcilkrts5
libdns162 libdpkg-perl libfakeroot libfile-fcntllock-perl libgcc-5-dev
libgomp1 libisc160 libisccc140 libisccfg140 libisl15 libitm1 liblsan0
liblwres141 libmpc3 libmpx0 libquadmath0 libstdc++-5-dev libstdc++6 libtsan0
libubsan0 libudev1 linux-libc-dev logrotate manpages-dev samba-common
Suggested packages:
default-mta | mail-transport-agent powermgmt-base cpp-doc gcc-5-locales
debian-keyring g++-multilib g++-5-multilib gcc-5-doc libstdc++6-5-dbg
gcc-multilib autoconf automake libtool flex bison gdb gcc-doc gcc-5-multilib
libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan2-dbg
liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libmpx0-dbg
libquadmath0-dbg glibc-doc libstdc++-5-doc mailx
Recommended packages:
cron | cron-daemon rsyslog | system-log-daemon apt samba-common-bin
The following packages will be REMOVED:
adduser* apache2* apache2-bin* apache2-utils* apt* apt-utils* aptitude*
bind9* bsd-mailx* cron* dbus* dmsetup* fetchmail* ifupdown* initramfs-tools*
initramfs-tools-core* initscripts* libapr1* libaprutil1*
libaprutil1-dbd-sqlite3* libaprutil1-ldap* libaudit1* libblkid1*
libcryptsetup4* libfdisk1* libmount1* libpam-modules* libpam-modules-bin*
libpam-runtime* libpam0g* libsemanage1* libuuid1* libxapian22v5* login*
mlocate* mount* mountall* openssh-client* openssh-server*
openssh-sftp-server* passwd* plymouth* postfix* procps* python-samba*
rpcbind* rsyslog* samba* samba-common-bin* samba-libs* sasl2-bin* screen*
ssl-cert* sudo* systemd* systemd-sysv* udev* util-linux* uuid-runtime* wget*
The following NEW packages will be installed:
anacron build-essential cpp cpp-5 dpkg-dev fakeroot g++ g++-5 gcc gcc-5
libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl
libasan2 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libdpkg-perl
libfakeroot libfile-fcntllock-perl libgcc-5-dev libisl15 libitm1 liblsan0
libmpc3 libmpx0 libquadmath0 libstdc++-5-dev libtsan0 libubsan0
linux-libc-dev manpages-dev
The following packages will be upgraded:
bind9-host gcc-5-base initramfs-tools-bin libapt-pkg5.0 libbind9-140 libc6
libdns162 libgomp1 libisc160 libisccc140 libisccfg140 liblwres141 libstdc++6
libudev1 logrotate samba-common
WARNING: The following essential packages will be removed.
This should NOT be done unless you know exactly what you are doing!
apt adduser (due to apt) login libaudit1 (due to login)
libpam0g (due to login) libpam-runtime (due to login)
libpam-modules (due to login) mount libblkid1 (due to mount)
libmount1 (due to mount) util-linux libfdisk1 (due to util-linux)
libuuid1 (due to util-linux)
16 upgraded, 34 newly installed, 60 to remove and 124 not upgraded.
Need to get 41.1 MB of archives.
After this operation, 12.4 MB of additional disk space will be used.
You are about to do something potentially harmful.
To continue type in the phrase 'Yes, do as I say!'
?] Abort.
同样有趣的是，aptitude why并apt-cache rdepends显示出如此不同的结果。
root@ro01:~# dpkg-query -Wf '${Package;-40}${Priority}\n' | sort -b -k2,2 -k1,1 | grep 'libaudit1'
libaudit1 optional
root@ro01:~# aptitude why libaudit1
i sudo Depends libaudit1 (>= 1:2.2.1)
root@ro01:~# dpkg-query -Wf '${Package;-40}${Priority}\n' | sort -b -k2,2 -k1,1 | grep 'sudo '
sudo optional
root@ro01:~# aptitude why sudo
i mountall Depends plymouth
p plymouth Recommends plymouth-theme-ubuntu-text | plymouth-theme
p mythbuntu-default-settings Provides plymouth-theme
p mythbuntu-default-settings Recommends lightdm
p lightdm Recommends xserver-xorg
p xserver-xorg Recommends xserver-xorg-video-all | xorg-driver-video
p nvidia-384 Provides xorg-driver-video
p nvidia-384 Depends dkms
p dkms Recommends menu | sudo
apt-cache rdepends 显示更多...
root@ro01:~# apt-cache rdepends libaudit1
libaudit1
Reverse Depends:
sudo
systemd
openssh-server
libaudit-dev
xwayland-hwe-16.04
xserver-xephyr-hwe-16.04
xmir-hwe-16.04
sudo-ldap
xserver-xorg-core-hwe-16.04
systemd
sudo
libvirt0
dbus-1-dbg
dbus
xwayland-hwe-16.04
xwayland
xvfb
xserver-xephyr-hwe-16.04
xserver-xephyr
xnest
xmir-hwe-16.04
xmir
xdmx
sudo-ldap
python3-audit
python-audit
nscd
linux-oem-tools-4.13.0-1024
linux-oem-tools-4.13.0-1022
linux-oem-tools-4.13.0-1021
linux-oem-tools-4.13.0-1020
linux-oem-tools-4.13.0-1019
linux-oem-tools-4.13.0-1017
linux-oem-tools-4.13.0-1015
linux-oem-tools-4.13.0-1012
linux-oem-tools-4.13.0-1010
linux-oem-tools-4.13.0-1008
linux-kvm-tools-4.4.0-1004
linux-gke-tools-4.4.0-1034
linux-gke-tools-4.4.0-1033
linux-gke-tools-4.4.0-1032
linux-gke-tools-4.4.0-1031
linux-gke-tools-4.4.0-1028
linux-gke-tools-4.4.0-1027
linux-gke-tools-4.4.0-1026
linux-gke-tools-4.4.0-1024
linux-gke-tools-4.4.0-1022
linux-gke-tools-4.4.0-1018
linux-gke-tools-4.4.0-1016
linux-gke-tools-4.4.0-1014
linux-gke-tools-4.4.0-1013
linux-gke-tools-4.4.0-1012
linux-gke-tools-4.4.0-1010
linux-gke-tools-4.4.0-1009
linux-gke-tools-4.4.0-1008
linux-gke-tools-4.4.0-1006
linux-gke-tools-4.4.0-1005
linux-gke-tools-4.4.0-1003
linux-gcp-tools-4.13.0-1013
linux-gcp-tools-4.13.0-1012
linux-gcp-tools-4.13.0-1011
linux-gcp-tools-4.13.0-1008
linux-gcp-tools-4.13.0-1007
linux-gcp-tools-4.13.0-1006
linux-gcp-tools-4.13.0-1002
linux-gcp-tools-4.10.0-1009
linux-gcp-tools-4.10.0-1008
linux-gcp-tools-4.10.0-1007
linux-gcp-tools-4.10.0-1006
linux-gcp-tools-4.10.0-1004
linux-euclid-tools-4.4.0-9026
linux-euclid-tools-4.4.0-9025
linux-euclid-tools-4.4.0-9023
linux-euclid-tools-4.4.0-9022
linux-euclid-tools-4.4.0-9021
linux-euclid-tools-4.4.0-9020
linux-euclid-tools-4.4.0-9019
linux-azure-edge-tools-4.15.0-1005
linux-azure-edge-tools-4.14.0-1003
linux-azure-edge-tools-4.13.0-1005
linux-azure-edge-tools-4.13.0-1003
linux-aws-tools-4.4.0-1012
linux-aws-tools-4.4.0-1011
linux-aws-tools-4.4.0-1009
linux-aws-tools-4.4.0-1007
linux-aws-tools-4.4.0-1004
linux-aws-tools-4.4.0-1003
linux-aws-tools-4.4.0-1001
gdm3
xserver-xorg-core-hwe-16.04
xserver-xorg-core
util-linux
systemd
sudo
passwd
openssh-server
login
linux-tools-4.4.0-98
linux-tools-4.4.0-97
linux-tools-4.4.0-96
linux-tools-4.4.0-93
linux-tools-4.4.0-92
linux-tools-4.4.0-91
linux-tools-4.4.0-89
linux-tools-4.4.0-87
linux-tools-4.4.0-83
linux-tools-4.4.0-81
linux-tools-4.4.0-79
linux-tools-4.4.0-78
linux-tools-4.4.0-77
linux-tools-4.4.0-75
linux-tools-4.4.0-72
linux-tools-4.4.0-71
linux-tools-4.4.0-70
linux-tools-4.4.0-67
linux-tools-4.4.0-66
linux-tools-4.4.0-64
linux-tools-4.4.0-63
linux-tools-4.4.0-62
linux-tools-4.4.0-59
linux-tools-4.4.0-57
linux-tools-4.4.0-53
linux-tools-4.4.0-51
linux-tools-4.4.0-47
linux-tools-4.4.0-45
linux-tools-4.4.0-43
linux-tools-4.4.0-42
linux-tools-4.4.0-38
linux-tools-4.4.0-36
linux-tools-4.4.0-34
linux-tools-4.4.0-31
linux-tools-4.4.0-28
linux-tools-4.4.0-24
linux-tools-4.4.0-22
linux-tools-4.4.0-122
linux-tools-4.4.0-121
linux-tools-4.4.0-119
linux-tools-4.4.0-116
linux-tools-4.4.0-112
linux-tools-4.4.0-109
linux-tools-4.4.0-108
linux-tools-4.4.0-104
linux-tools-4.4.0-103
linux-tools-4.4.0-101
linux-kvm-tools-4.4.0-1021
linux-kvm-tools-4.4.0-1020
linux-kvm-tools-4.4.0-1019
linux-kvm-tools-4.4.0-1017
linux-kvm-tools-4.4.0-1015
linux-kvm-tools-4.4.0-1013
linux-kvm-tools-4.4.0-1012
linux-kvm-tools-4.4.0-1010
linux-kvm-tools-4.4.0-1009
linux-kvm-tools-4.4.0-1008
linux-kvm-tools-4.4.0-1007
linux-hwe-tools-4.8.0-58
linux-hwe-tools-4.8.0-56
linux-hwe-tools-4.8.0-54
linux-hwe-tools-4.8.0-53
linux-hwe-tools-4.8.0-52
linux-hwe-tools-4.8.0-51
linux-hwe-tools-4.8.0-49
linux-hwe-tools-4.8.0-46
linux-hwe-tools-4.8.0-45
linux-hwe-tools-4.8.0-44
linux-hwe-tools-4.8.0-42
linux-hwe-tools-4.8.0-41
linux-hwe-tools-4.8.0-39
linux-hwe-tools-4.8.0-36
linux-hwe-tools-4.13.0-39
linux-hwe-tools-4.13.0-38
linux-hwe-tools-4.13.0-37
linux-hwe-tools-4.13.0-36
linux-hwe-tools-4.13.0-32
linux-hwe-tools-4.13.0-31
linux-hwe-tools-4.13.0-26
linux-hwe-tools-4.10.0-42
linux-hwe-tools-4.10.0-40
linux-hwe-tools-4.10.0-38
linux-hwe-tools-4.10.0-37
linux-hwe-tools-4.10.0-35
linux-hwe-tools-4.10.0-33
linux-hwe-tools-4.10.0-32
linux-hwe-tools-4.10.0-30
linux-hwe-tools-4.10.0-28
linux-hwe-tools-4.10.0-27
linux-hwe-edge-tools-4.8.0-34
linux-hwe-edge-tools-4.15.0-15
linux-hwe-edge-tools-4.15.0-13
linux-hwe-edge-tools-4.13.0-25
linux-hwe-edge-tools-4.13.0-21
linux-hwe-edge-tools-4.13.0-19
linux-hwe-edge-tools-4.13.0-17
linux-hwe-edge-tools-4.13.0-16
linux-hwe-edge-tools-4.11.0-14
linux-hwe-edge-tools-4.11.0-13
linux-hwe-edge-tools-4.10.0-26
linux-hwe-edge-tools-4.10.0-24
linux-hwe-edge-tools-4.10.0-22
linux-hwe-edge-tools-4.10.0-21
linux-hwe-edge-tools-4.10.0-20
linux-hwe-edge-tools-4.10.0-19
linux-hwe-edge-tools-4.10.0-14
linux-azure-tools-4.13.0-1014
linux-azure-tools-4.13.0-1012
linux-azure-tools-4.13.0-1011
linux-azure-tools-4.13.0-1009
linux-azure-tools-4.13.0-1007
linux-azure-tools-4.13.0-1006
linux-azure-tools-4.13.0-1005
linux-azure-tools-4.11.0-1016
linux-azure-tools-4.11.0-1015
linux-azure-tools-4.11.0-1014
linux-azure-tools-4.11.0-1013
linux-azure-tools-4.11.0-1011
linux-azure-tools-4.11.0-1009
linux-aws-tools-4.4.0-1055
linux-aws-tools-4.4.0-1054
linux-aws-tools-4.4.0-1052
linux-aws-tools-4.4.0-1050
linux-aws-tools-4.4.0-1049
linux-aws-tools-4.4.0-1048
linux-aws-tools-4.4.0-1047
linux-aws-tools-4.4.0-1044
linux-aws-tools-4.4.0-1043
linux-aws-tools-4.4.0-1041
linux-aws-tools-4.4.0-1039
linux-aws-tools-4.4.0-1038
linux-aws-tools-4.4.0-1037
linux-aws-tools-4.4.0-1035
linux-aws-tools-4.4.0-1032
linux-aws-tools-4.4.0-1031
linux-aws-tools-4.4.0-1030
linux-aws-tools-4.4.0-1028
linux-aws-tools-4.4.0-1026
linux-aws-tools-4.4.0-1022
linux-aws-tools-4.4.0-1020
linux-aws-tools-4.4.0-1018
linux-aws-tools-4.4.0-1017
linux-aws-tools-4.4.0-1016
linux-aws-tools-4.4.0-1013
libvirt0
libpam0g
libpam-modules-bin
libpam-modules
libauparse0
libauparse0
libauparse0
libaudit-common
libaudit-common
libaudit-common
dbus-1-dbg
dbus
auditd
xwayland
xvfb
xserver-xephyr
xnest
xmir
xdmx
ubuntu-core-libs
sudo-ldap
python3-audit
python-audit
policycoreutils
nscd
gdm3
aide-dynamic
xserver-xorg-core
systemd
sudo
passwd
openssh-server
login
linux-tools-4.4.0-21
libvirt0
libsemanage1
libpam0g
libpam-modules-bin
libpam-modules
libauparse0
libauparse0
libauparse0
libaudit-dev
libaudit-common
dbus
dbus-1-dbg
auditd
root@ro01:~#
找到了更多有问题的软件包...
当apt-get purge一个一个地运行软件包时，我不再收到有关删除重要软件包并浏览已删除内容列表的警告，我看到不再删除诸如adduser和apt之类的重要内容。但是，当apt-get purge一次运行所有软件包时……警告仍然存在，尽管单独删除软件包时apt仍然不在，但apt和其他内容仍在删除列表中。不知道。
最后，我只是排除了所有库和其他一些软件包，以避免删除我关心的任何内容。
root@ro01:~# apt-get purge $(dpkg-query -Wf \
'${Package;-40}${Priority}\n' | \
awk '$2 ~ /optional|extra/ { print $1 }' | \
grep -vE 'lib|gawk|openssh|insserv|quota|sudo')
Reading package lists... Done
Building dependency tree... Done
The following packages will be REMOVED:
apache2* apache2-bin* apache2-data* apache2-doc* apache2-utils* bind9* bind9utils* binutils* bsd-mailx* busybox-initramfs* ca-certificates* cifs-utils* console-data* db-util* db5.3-util* debconf-utils* dh-python*
dialog* distro-info-data* dmsetup* dselect* ed* expat* fetchmail* finger* fontconfig* fontconfig-config* fonts-dejavu* fonts-dejavu-core* fonts-dejavu-extra* fonts-freefont-ttf* gettext* initramfs-tools*
initramfs-tools-bin* initramfs-tools-core* iputils-arping* iputils-tracepath* ldap-utils* libfontconfig1* linux-base* lsb-release* lynx* lynx-common* make* makedev* memtester* mktemp* module-init-tools* mountall*
mtools* odbcinst* odbcinst1debian2* openssl* openssl-blacklist* plymouth* postfix* procinfo* psmisc* psutils* pwgen* python-crypto* python-dnspython* python-ldb* python-samba* python-talloc* python-tdb* python3*
python3-minimal* python3.5* python3.5-minimal* rsync* samba* samba-common* samba-common-bin* samba-libs* sasl2-bin* sharutils* snmp* ssl-cert* syslinux* tcpdump* tcsh* tdb-tools* tofrodos* ttf-dejavu* ttf-dejavu-core*
ttf-dejavu-extra* ttf-freefont* unixodbc* unzip* update-inetd* uuid-runtime* vim* vim-runtime* wide-dhcpv6-client* xinetd*
0 upgraded, 0 newly installed, 96 to remove and 0 not upgraded.
After this operation, 195 MB disk space will be freed.
Do you want to continue? [Y/n] Y