Installing updates
1520
How to install software or upgrade from an old unsupported release?
90822
How can I install just security updates from the command line?
24165
Upgrade to version newer than repositories
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
55310
Attempting to Install MSU hotfixes results in "Searching for updates on this computer..." to last forever
135383
Unable to update my system Ubuntu13.04: Getting message - requires installation of untrusted packages
72082
Is using Software Updater the same thing as running apt-get update and apt-get upgrade?
109539
How can I perform an offline upgrade using Ubiquity on the installation disc?
102559
How to install package from newer distribution?
99687
update-alternatives --install says it needs link name path priority?
77062
Updates stopped and fix-broken install is broken
56491
How do I stop Windows from installing applications on update?
94793
How do you run update-grub?
32829
One single command to update everything in Ubuntu?
120161
Ubuntu 19.04 problems install upgrades
118978
Not all updates can be installed: partial upgrade
127852
How do I update a program installed from a manually-downloaded deb package?