have to update on a regular basis...why?

[Tom H]

On Sat, Mar 7, 2015 at 8:57 PM, Thufir <hawat.thufir at gmail.com> wrote:
>
> Quite frequently when I go to install a package it can't be found, but
> just running sudo apt-get update fixes that. Why the constant need to
> update? It's not like the package was suddenly added.

Either

1) You're running "apt-get clean" and deleting the cached list of
available packages

2) The package that you're installing has been updated and your cached
list of available packages has the incorrect version