I typed in terminal
Code:
sudo apt-get install gnome-shell
then it says some 54mb space will be used.
then issues a warning message:
Code:
WARNING: The following packages cannot be authenticated!
x11proto-core-dev libice-dev libsm-dev libxau-dev libxdmcp-dev
x11proto-input-dev x11proto-kb-dev xtrans-dev libpthread-stubs0
libpthread-stubs0-dev libxcb1-dev libx11-dev x11proto-xext-dev libxext-dev
x11proto-fixes-dev libxfixes-dev zlib1g-dev libfontconfig1-dev
x11proto-render-dev libxrender-dev libxft-dev libglib2.0-0
libgirepository1.0-0 gobject-introspection libcairo2
gobject-introspection-freedesktop gobject-introspection-glib-2.0
gobject-introspection-repository libdirectfb-extra libjpeg62-dev
libsysfs-dev libdirectfb-dev libpixman-1-dev libxcb-render0-dev
libxcb-render-util0-dev libcairo2-dev libglib2.0-dev mesa-common-dev
xbase-clients gjs mutter-common libmutter0 mutter gnome-shell
then after some attempts of fetching from repos, it gives error message like this:
Code:
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?