Réponses:
Cela devrait être aussi simple que de dire à apt que vous voulez supprimer Xorg et cela déclenchera la suppression de tous les paquets qui dépendent de X.
sudo apt-get remove xserver-xorg-core
Juste au cas où cela ne fonctionnerait pas, voici une liste de tout ce que ubuntu-desktop déclenche pour être installé sur mon installation nue d'ubuntu-server:
account-plugin-aim account-plugin-facebook account-plugin-flickr
account-plugin-google account-plugin-icons account-plugin-identica
account-plugin-jabber account-plugin-salut account-plugin-twitter
account-plugin-windows-live account-plugin-yahoo acl acpi-support acpid
activity-log-manager-common activity-log-manager-control-center
adium-theme-ubuntu aisleriot alsa-base alsa-utils anacron apg
app-install-data app-install-data-partner appmenu-gtk appmenu-gtk3
appmenu-qt apport apport-gtk apport-symptoms aptdaemon aptdaemon-data apturl
apturl-common aspell aspell-en at-spi2-core avahi-autoipd avahi-daemon
avahi-utils bamfdaemon baobab bc binutils bluez bluez-alsa bluez-cups
bluez-gstreamer branding-ubuntu brasero brasero-cdrkit brasero-common brltty
checkbox checkbox-qt colord compiz compiz-core compiz-gnome
compiz-plugins-default consolekit cpp cpp-4.7 cracklib-runtime
cryptsetup-bin cups cups-bsd cups-client cups-common cups-filters cups-ppdc
dbus-x11 dc dconf-gsettings-backend dconf-service dconf-tools deja-dup
desktop-file-utils dictionaries-common diffstat dmz-cursor-theme
dnsmasq-base doc-base duplicity dvd+rw-tools empathy empathy-common enchant
eog espeak-data evince evince-common evolution-data-server
evolution-data-server-common example-content file-roller firefox
firefox-globalmenu firefox-gnome-support folks-common fontconfig
fontconfig-config fonts-freefont-ttf fonts-kacst fonts-kacst-one
fonts-khmeros-core fonts-lao fonts-liberation fonts-lklug-sinhala
fonts-nanum fonts-opensymbol fonts-sil-abyssinica fonts-sil-padauk
fonts-takao-pgothic fonts-thai-tlwg fonts-tibetan-machine fonts-tlwg-garuda
fonts-tlwg-kinnari fonts-tlwg-loma fonts-tlwg-mono fonts-tlwg-norasi
fonts-tlwg-purisa fonts-tlwg-sawasdee fonts-tlwg-typewriter
fonts-tlwg-typist fonts-tlwg-typo fonts-tlwg-umpush fonts-tlwg-waree
foomatic-db-compressed-ppds foomatic-db-engine foomatic-filters freerdp-x11
gcalctool gcc gcc-4.7 gconf-service gconf-service-backend gconf2
gconf2-common gcr gdb gedit gedit-common genisoimage geoclue
geoclue-ubuntu-geoip gettext ghostscript ghostscript-cups ghostscript-x
gir1.2-accounts-1.0 gir1.2-appindicator3-0.1 gir1.2-atk-1.0 gir1.2-atspi-2.0
gir1.2-dbusmenu-glib-0.4 gir1.2-dee-1.0 gir1.2-freedesktop gir1.2-gdata-0.0
gir1.2-gdkpixbuf-2.0 gir1.2-gmenu-3.0 gir1.2-gnomebluetooth-1.0
gir1.2-gnomekeyring-1.0 gir1.2-goa-1.0 gir1.2-gst-plugins-base-0.10
gir1.2-gstreamer-0.10 gir1.2-gtk-3.0 gir1.2-gtksource-3.0 gir1.2-gudev-1.0
gir1.2-indicate-0.7 gir1.2-javascriptcoregtk-3.0 gir1.2-messagingmenu-1.0
gir1.2-notify-0.7 gir1.2-pango-1.0 gir1.2-peas-1.0 gir1.2-rb-3.0
gir1.2-signon-1.0 gir1.2-soup-2.4 gir1.2-syncmenu-0.1 gir1.2-totem-1.0
gir1.2-totem-plparser-1.0 gir1.2-ubuntuoneui-3.0 gir1.2-unity-5.0
gir1.2-vte-2.90 gir1.2-webkit-3.0 gir1.2-wnck-3.0 gksu glib-networking
glib-networking-common glib-networking-services gnome-accessibility-themes
gnome-bluetooth gnome-contacts gnome-control-center
gnome-control-center-data gnome-control-center-signon gnome-desktop3-data
gnome-disk-utility gnome-font-viewer gnome-games-data gnome-icon-theme
gnome-icon-theme-symbolic gnome-keyring gnome-mahjongg gnome-media
gnome-menus gnome-online-accounts gnome-orca gnome-power-manager
gnome-screensaver gnome-screenshot gnome-session gnome-session-bin
gnome-session-canberra gnome-session-common gnome-settings-daemon
gnome-sudoku gnome-system-log gnome-system-monitor gnome-terminal
gnome-terminal-data gnome-user-guide gnome-user-share gnomine growisofs
gsettings-desktop-schemas gsfonts gstreamer0.10-alsa gstreamer0.10-gconf
gstreamer0.10-nice gstreamer0.10-plugins-base
gstreamer0.10-plugins-base-apps gstreamer0.10-plugins-good
gstreamer0.10-pulseaudio gstreamer0.10-tools gstreamer0.10-x gtk2-engines
gtk2-engines-murrine gtk3-engines-unico gucharmap guile-1.8-libs gvfs
gvfs-backends gvfs-bin gvfs-common gvfs-daemons gvfs-fuse gvfs-libs gwibber
gwibber-service gwibber-service-facebook gwibber-service-identica
gwibber-service-twitter hardening-includes hicolor-icon-theme hpijs hplip
hplip-data humanity-icon-theme hunspell-en-us hwdata ibus ibus-gtk ibus-gtk3
ibus-pinyin ibus-pinyin-db-android ibus-pinyin-db-open-phrase ibus-table
im-switch indicator-applet indicator-application indicator-appmenu
indicator-datetime indicator-messages indicator-power indicator-printers
indicator-session indicator-sound inputattach intel-gpu-tools
intltool-debian iputils-arping kerneloops-daemon landscape-client-ui-install
language-selector-gnome libaa1 libaccount-plugin-1.0-0 libaccounts-glib0
libaccounts-qt1 libappindicator1 libappindicator3-1 libapt-pkg-perl
libarchive-zip-perl libarchive12 libart-2.0-2 libasound2 libasound2-plugins
libaspell15 libasyncns0 libatasmart4 libatk-adaptor libatk-adaptor-data
libatk-bridge2.0-0 libatk1.0-0 libatk1.0-data libatkmm-1.6-1 libatspi2.0-0
libaudio2 libavahi-client3 libavahi-common-data libavahi-common3
libavahi-core7 libavahi-glib1 libavahi-gobject0 libavc1394-0 libbamf3-0
libbluetooth3 libboost-date-time1.49.0 libbrasero-media3-1 libbrlapi0.5
libburn4 libc-dev-bin libc6-dev libcaca0 libcairo-gobject2 libcairo-perl
libcairo2 libcairomm-1.0-1 libcamel-1.2-40 libcanberra-gtk-module
libcanberra-gtk0 libcanberra-gtk3-0 libcanberra-gtk3-module
libcanberra-pulse libcanberra0 libcap2 libcap2-bin libcdio-cdda1
libcdio-paranoia1 libcdio13 libcdparanoia0 libck-connector0 libclone-perl
libclutter-1.0-0 libclutter-1.0-common libclutter-gst-1.0-0
libclutter-gtk-1.0-0 libcmis-0.2-2 libcogl-common libcogl-pango0 libcogl9
libcolord1 libcompizconfig0 libcrack2 libcroco3 libcrypt-passwdmd5-perl
libcryptsetup4 libcups2 libcupscgi1 libcupsfilters1 libcupsimage2
libcupsmime1 libcupsppdc1 libcurl3 libcurl3-nss libdaemon0 libdatrie1
libdbusmenu-glib4 libdbusmenu-gtk3-4 libdbusmenu-gtk4 libdbusmenu-qt2
libdconf1 libdecoration0 libdee-1.0-4 libdevmapper-event1.02.1
libdigest-hmac-perl libdiscid0 libdjvulibre-text libdjvulibre21
libdmapsharing-3.0-2 libdotconf1.0 libdpkg-perl libdrm-nouveau2 libdv4
libebackend-1.2-5 libebook-1.2-14 libecal-1.2-15 libedata-book-1.2-15
libedata-cal-1.2-18 libedataserver-1.2-17 libemail-valid-perl libenchant1c2a
libespeak1 libevdocument3-4 libevview3-3 libexempi3 libexif12 libexiv2-12
libexttextcat-1.0-0 libexttextcat-data libfarstream-0.1-0
libfile-basedir-perl libfile-copy-recursive-perl libfile-desktopentry-perl
libfile-fcntllock-perl libfile-mimeinfo-perl libflac8 libfolks-eds25
libfolks-telepathy25 libfolks25 libfontconfig1 libfontembed1 libfontenc1
libframe6 libfreerdp-plugins-standard libfreerdp1 libfs6 libgail-3-0
libgail-common libgail18 libgck-1-0 libgconf-2-4 libgcr-3-1 libgcr-3-common
libgd2-xpm libgdata-common libgdata13 libgdk-pixbuf2.0-0
libgdk-pixbuf2.0-common libgee2 libgeis1 libgeoclue0 libgettextpo0
libgexiv2-1 libgksu2-0 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa
libglew1.8 libglewmx1.8 libglib-perl libglib2.0-0 libglib2.0-bin
libglib2.0-data libglibmm-2.4-1c2a libglu1-mesa libgmime-2.6-0 libgmp10
libgnome-bluetooth11 libgnome-control-center1 libgnome-desktop-3-4
libgnome-keyring-common libgnome-keyring0 libgnome-media-profiles-3.0-0
libgnome-menu-3-0 libgnome-menu2 libgnomekbd-common libgnomekbd8
libgoa-1.0-0 libgoa-1.0-common libgomp1 libgpgme11 libgphoto2-2
libgphoto2-l10n libgphoto2-port0 libgpod-common libgpod4 libgrail5 libgrip0
libgs9 libgs9-common libgssdp-1.0-3 libgstreamer-plugins-base0.10-0
libgstreamer0.10-0 libgtk-3-0 libgtk-3-bin libgtk-3-common libgtk2-perl
libgtk2.0-0 libgtk2.0-bin libgtk2.0-common libgtkmm-3.0-1
libgtksourceview-3.0-0 libgtksourceview-3.0-common libgtkspell-3-0
libgtop2-7 libgtop2-common libgucharmap-2-90-7 libgudev-1.0-0 libgupnp-1.0-4
libgupnp-igd-1.0-4 libgusb2 libgutenprint2 libgweather-3-1
libgweather-common libgwibber-gtk3 libgwibber3 libgxps2 libhpmud0
libhunspell-1.3-0 libhyphen0 libibus-1.0-0 libical0 libice6 libicu48
libido3-0.1-0 libiec61883-0 libieee1284-3 libijs-0.35 libimobiledevice3
libindicate5 libindicator3-7 libindicator7 libio-pty-perl
libio-socket-inet6-perl libipc-run-perl libisofs6 libitm1 libiw30
libjack-jackd2-0 libjasper1 libjavascriptcoregtk-3.0-0 libjbig0 libjbig2dec0
libjpeg-turbo8 libjpeg8 libjs-jquery libjson-glib-1.0-0 libjson0 libjte1
libkpathsea6 liblcms1 liblcms2-2 liblightdm-gobject-1-0 liblircclient0
libllvm3.1 liblouis-data liblouis2 libltdl7 liblua5.1-0 liblvm2app2.2
libmailtools-perl libmeanwhile1 libmessaging-menu0 libmetacity-private0a
libmhash2 libminiupnpc8 libmission-control-plugins0 libmng1 libmpc2 libmpfr4
libmtdev1 libmtp-common libmtp-runtime libmtp9 libmusicbrainz5-0 libmx-1.0-2
libmx-bin libmx-common libmysqlclient18 libmythes-1.2-0 libnatpmp1
libnautilus-extension1a libneon27-gnutls libnet-dns-perl
libnet-domain-tld-perl libnet-ip-perl libnetfilter-conntrack3 libnettle4
libnice10 libnl-route-3-200 libnm-glib-vpn1 libnm-glib4 libnm-gtk-common
libnm-gtk0 libnm-util2 libnotify-bin libnotify4 libnspr4 libnss-mdns libnss3
libnux-3.0-0 libnux-3.0-common liboauth0 libogg0 libopencc1 libopenobex1
liborc-0.4-0 libpackagekit-glib2-14 libpam-cap libpam-ck-connector
libpam-freerdp libpam-gnome-keyring libpam-xdg-support libpanel-applet-4-0
libpango-perl libpango1.0-0 libpangomm-1.4-1 libpaper-utils libpaper1
libpcsclite1 libpeas-1.0-0 libpeas-common libperl5.14 libpixman-1-0
libplist1 libpolkit-agent-1-0 libpolkit-backend-1-0 libpoppler-glib8
libpoppler28 libportaudio2 libprotobuf7 libprotoc7 libproxy1
libproxy1-plugin-gsettings libproxy1-plugin-networkmanager libpth20
libpulse-mainloop-glib0 libpulse0 libpulsedsp libpurple-bin libpurple0
libpwquality1 libpython3.2 libqjson0 libqpdf8 libqt4-dbus libqt4-declarative
libqt4-designer libqt4-help libqt4-network libqt4-script libqt4-scripttools
libqt4-sql libqt4-sql-mysql libqt4-sql-sqlite libqt4-svg libqt4-test
libqt4-xml libqt4-xmlpatterns libqtassistantclient4 libqtcore4 libqtgui4
libqtwebkit4 libquadmath0 libquvi-scripts libquvi7 libraptor2-0 librasqal3
libraw1394-11 libraw5 librdf0 libreoffice-base-core libreoffice-calc
libreoffice-common libreoffice-core libreoffice-draw libreoffice-emailmerge
libreoffice-gnome libreoffice-gtk libreoffice-help-en-us libreoffice-impress
libreoffice-math libreoffice-ogltrans libreoffice-pdfimport
libreoffice-presentation-minimizer libreoffice-presenter-console
libreoffice-style-human libreoffice-style-tango libreoffice-writer
librest-0.7-0 librhythmbox-core6 librsvg2-2 librsvg2-common librsync1
libsamplerate0 libsane libsane-common libsane-hpaio libsecret-1-0
libsecret-common libsensors4 libsgutils2-2 libshout3 libsignon-extension1
libsignon-glib1 libsignon-plugins-common1 libsignon-qt1 libsm6 libsmbclient
libsndfile1 libsnmp-base libsnmp15 libsocket6-perl libsonic0
libsoup-gnome2.4-1 libsoup2.4-1 libspectre1 libspeechd2 libspeex1
libspeexdsp1 libssh-4 libstartup-notification0 libsync-menu1
libsyncdaemon-1.0-1 libsysfs2 libt1-5 libtag1-vanilla libtag1c2a libtalloc2
libtdb1 libtelepathy-farstream2 libtelepathy-glib0 libtelepathy-logger2
libthai-data libthai0 libtheora0 libtiff5 libtimezonemap1
libtotem-plparser17 libtotem0 libtxc-dxtn-s2tc0 libubuntuoneui-3.0-1
libudisks2-0 libufe-xidgetter0 libunistring0 libunity-core-6.0-5
libunity-misc4 libunity-protocol-private0 libunity-webapps0 libunity9
libupower-glib1 liburi-perl libusbmuxd2 libutempter0 libuuid-perl libv4l-0
libv4lconvert0 libvisual-0.4-0 libvisual-0.4-plugins libvncserver0
libvorbis0a libvorbisenc2 libvorbisfile3 libvte-2.90-9 libvte-2.90-common
libwacom-common libwacom2 libwavpack1 libwbclient0 libwebkitgtk-3.0-0
libwebkitgtk-3.0-common libwhoopsie0 libwmf0.2-7 libwmf0.2-7-gtk libwnck-3-0
libwnck-3-common libwnck-common libwnck22 libwpd-0.9-9 libwpg-0.2-2
libwps-0.2-2 libx11-xcb1 libx86-1 libxatracker1 libxaw7 libxcb-dri2-0
libxcb-glx0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb-util0
libxcomposite1 libxcursor1 libxdamage1 libxfixes3 libxfont1 libxft2 libxi6
libxinerama1 libxkbfile1 libxklavier16 libxml2 libxmu6 libxp6 libxpm4
libxrandr2 libxrender1 libxres1 libxslt1.1 libxt6 libxtst6 libxv1 libxvmc1
libxxf86dga1 libxxf86vm1 libyajl2 libyaml-tiny-perl libyelp0
libzeitgeist-1.0-1 libzephyr4 light-themes lightdm
lightdm-remote-session-freerdp lightdm-remote-session-uccsconfigure lintian
linux-libc-dev linux-sound-base make manpages-dev mcp-account-manager-uoa
media-player-info metacity-common mobile-broadband-provider-info
modemmanager mousetweaks mscompress mtools mysql-common nautilus
nautilus-data nautilus-sendto nautilus-sendto-empathy nautilus-share
network-manager network-manager-gnome network-manager-pptp
network-manager-pptp-gnome notification-daemon notify-osd notify-osd-icons
nux-tools obex-data-server obexd-client onboard oneconf openprinting-ppds
overlay-scrollbar overlay-scrollbar-gtk2 overlay-scrollbar-gtk3 patch
patchutils pcmciautils perl perl-base perl-modules pinyin-database
pkg-config plymouth-label plymouth-theme-ubuntu-logo pm-utils policykit-1
policykit-1-gnome policykit-desktop-privileges poppler-data poppler-utils
pptp-linux printer-driver-c2esp printer-driver-foo2zjs
printer-driver-gutenprint printer-driver-hpcups printer-driver-hpijs
printer-driver-min12xxw printer-driver-pnm2ppa printer-driver-postscript-hp
printer-driver-ptouch printer-driver-pxljr printer-driver-sag-gdi
printer-driver-splix protobuf-compiler pulseaudio
pulseaudio-module-bluetooth pulseaudio-module-gconf pulseaudio-module-x11
pulseaudio-utils python-appindicator python-apport python-aptdaemon
python-aptdaemon.gtk3widgets python-cairo python-configglue python-cups
python-cupshelpers python-dbus python-dbus-dev python-debtagshw python-defer
python-dirspec python-gconf python-gi python-gi-cairo python-gnomekeyring
python-gnupginterface python-gobject python-gobject-2 python-gst0.10
python-gtk2 python-httplib2 python-ibus python-imaging python-libxml2
python-lxml python-mako python-markupsafe python-notify python-oauth
python-openssl python-pam python-pexpect python-piston-mini-client
python-pkg-resources python-problem-report python-protobuf python-pycurl
python-pyinotify python-qt4 python-qt4-dbus python-renderpm python-reportlab
python-reportlab-accel python-serial python-simplejson python-sip
python-smbc python-twisted-bin python-twisted-core python-twisted-names
python-twisted-web python-ubuntu-sso-client python-ubuntuone-client
python-ubuntuone-control-panel python-ubuntuone-storageprotocol python-uno
python-xdg python-zeitgeist python-zope.interface python3-apport
python3-aptdaemon python3-aptdaemon.gtk3widgets python3-aptdaemon.pkcompat
python3-brlapi python3-cairo python3-crypto python3-defer
python3-distupgrade python3-gi-cairo python3-httplib2 python3-louis
python3-lxml python3-oauthlib python3-pkg-resources python3-problem-report
python3-pyatspi2 python3-pycurl python3-software-properties python3-speechd
python3-update-manager python3-virtkey python3-xdg python3-xkit python3.2
python3.2-minimal qdbus qpdf qt-at-spi radeontool remmina remmina-common
remmina-plugin-rdp remmina-plugin-vnc remote-login-service rfkill rhythmbox
rhythmbox-data rhythmbox-mozilla rhythmbox-plugin-cdrecorder
rhythmbox-plugin-magnatune rhythmbox-plugin-zeitgeist rhythmbox-plugins
rhythmbox-ubuntuone rtkit samba-common samba-common-bin sane-utils seahorse
session-migration sessioninstaller sgml-base shared-mime-info shotwell
signon-keyring-extension signon-plugin-oauth2 signon-plugin-password
signon-ui signond simple-scan smbclient sni-qt software-center
software-center-aptdaemon-plugins software-properties-common
software-properties-gtk sound-theme-freedesktop speech-dispatcher
ssh-askpass-gnome ssl-cert syslinux syslinux-common syslinux-legacy
system-config-printer-common system-config-printer-gnome
system-config-printer-udev telepathy-gabble telepathy-haze telepathy-idle
telepathy-indicator telepathy-logger telepathy-mission-control-5
telepathy-salut thin-client-config-agent thunderbird thunderbird-globalmenu
thunderbird-gnome-support toshset totem totem-common totem-mozilla
totem-plugins transmission-common transmission-gtk ttf-dejavu-core
ttf-indic-fonts-core ttf-punjabi-fonts ttf-ubuntu-font-family
ttf-wqy-microhei ubuntu-artwork ubuntu-docs ubuntu-drivers-common
ubuntu-extras-keyring ubuntu-mono ubuntu-release-upgrader-core
ubuntu-release-upgrader-gtk ubuntu-settings ubuntu-sounds ubuntu-sso-client
ubuntu-sso-client-qt ubuntu-system-service ubuntu-wallpapers
ubuntu-wallpapers-quantal ubuntuone-client ubuntuone-client-gnome
ubuntuone-control-panel ubuntuone-control-panel-qt ubuntuone-couch udisks
udisks2 unattended-upgrades unity unity-asset-pool unity-common
unity-greeter unity-lens-applications unity-lens-files unity-lens-gwibber
unity-lens-music unity-lens-photos unity-lens-shopping unity-lens-video
unity-scope-gdocs unity-scope-musicstores unity-scope-video-remote
unity-services unity-webapps-common unity-webapps-service uno-libs3 unzip
update-inetd update-manager update-manager-core update-notifier
update-notifier-common upower ure usb-creator-common usb-creator-gtk
usb-modeswitch usb-modeswitch-data usbmuxd vbetool vino wamerican whoopsie
wireless-tools wodim wpasupplicant x11-apps x11-common x11-session-utils
x11-utils x11-xfs-utils x11-xkb-utils x11-xserver-utils xbitmaps
xcursor-themes xdg-user-dirs xdg-user-dirs-gtk xdg-utils xdiagnose
xfonts-base xfonts-encodings xfonts-mathml xfonts-scalable xfonts-utils
xinit xinput xml-core xorg xorg-docs-core xserver-common xserver-xorg
xserver-xorg-core xserver-xorg-input-all xserver-xorg-input-evdev
xserver-xorg-input-mouse xserver-xorg-input-synaptics
xserver-xorg-input-vmmouse xserver-xorg-input-wacom xserver-xorg-video-all
xserver-xorg-video-ati xserver-xorg-video-cirrus xserver-xorg-video-fbdev
xserver-xorg-video-intel xserver-xorg-video-mach64 xserver-xorg-video-mga
xserver-xorg-video-modesetting xserver-xorg-video-neomagic
xserver-xorg-video-nouveau xserver-xorg-video-openchrome
xserver-xorg-video-qxl xserver-xorg-video-r128 xserver-xorg-video-radeon
xserver-xorg-video-s3 xserver-xorg-video-savage
xserver-xorg-video-siliconmotion xserver-xorg-video-sis
xserver-xorg-video-sisusb xserver-xorg-video-tdfx xserver-xorg-video-trident
xserver-xorg-video-vesa xserver-xorg-video-vmware xterm xul-ext-ubufox
xul-ext-unity xul-ext-websites-integration yelp yelp-xsl zeitgeist
zeitgeist-core zeitgeist-datahub zenity zenity-common zip
Vous pouvez copier et coller cela dans une ligne de commande apt-get remove.
A écrit un script simple pour supprimer ces packages.
#!/bin/bash
for line in $(cat pkgdel.txt)
do
apt-get remove $line -y
donepkgdel.txtforsera extrêmement lente car elle exécutera la commande une fois pour chaque argument. Heureusement, les packages sont toujours nommés sainement afaik, mais s'ils ne l'étaient pas, les extensions de shell et le fractionnement de mots provoqueraient également un comportement inattendu