Remove optional ubuntu packages for speeding up release-upgrade
11035
Keep only essential packages
118543
How can I install a package without installing some dependencies?
157289
Why use apt-get upgrade instead of apt-get dist-upgrade?
3167
Could I remove apt with apt?
47808
"The following packages were automatically installed and are no longer required:" what to do?
1520
How to install software or upgrade from an old unsupported release?
84537
Using dpkg to install upgrade and dist-upgrade packages
135635
How to completely remove virtual packages?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
100963
How to only perform LTS upgrades?
64546
How to forbid a specific package to be installed?
67481
How to revert a do-release-upgrade?
31172
What's the equivalent of "add or remove programs" in Ubuntu?
131474
How to only install updates from a specific repository?
11166
"Require Installation Of Untrusted Packages" while upgrading with the update manager
121222
"Kept back" packages for update , want to uninstall unity?
110148
Why does `do-release-upgrade` skip a version?