Troubleshooting of updation during installation of ns2 in ubuntu
1520
How to install software or upgrade from an old unsupported release?
158145
A software update is required to use this startup disk - does not update
47843
Upgraded to Chrome 61.0.3163 via ppa on Ubuntu 16.04 but it won't launch because NSS out of date
2670
Why is "No new release found" when upgrading from a LTS to the next?
755
What should I do to force the root filesystem check (and optionally a fix) at boot?
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
151656
Installing from source. How to resolve dependencies without destroying the package manager
120131
How can I recover from a "AMD-Action:downloadProduct:SP" during installation of macOS?
77147
node.js conflicts: /sbin/node vs /usr/bin/node
120229
Understanding various update and upgrade commands
133
How can I fix a 404 Error when using a PPA or updating my package lists?
117798
How to replace package install of nginx with compiled from source?
44846
Package 'upstart' has no installation candidate
52350
How should I fix my Homebrew installation after upgrading OS X?
72603
Unsupported major.minor version 52.0
93942
How to fix "Failed to download repository information" error while updating?
5820
How to fix the “Unable to calculate upgrade” issue from command line when upgrading from 12.04 to 14.04?