Ubuntu apt-get sources blocked by internet provider
19361
Can't update because the word prox* is blocked
133
How can I fix a 404 Error when using a PPA or updating my package lists?
21789
What does 'Ign' , `Get` or 'Hit' mean when running an apt-get update?
18476
Can't download anything due to proxy
62412
How to install from unknown sources on AT&T?
130904
Install programs without an internet connection on Debian
143861
How to get all URLs for packages that would be installed for `apt install ` command
94986
Connection Refused while apt-get update ubuntu 18.04 over proxy
20072
apt-get 403 Forbidden
69275
I installed a program by getting its source code, and then running `sudo make install`; how to make `apt-get` know about it?
12054
How do I deal with "unauthenticated sources" errors in the Software Center?
24603
apt-get upgrade gives "403 forbidden" error
135985
Apt-get saying "Unable to correct problems, you have held broken packages."
66065
"Unable to connect" error with apt-get?
10985
Using an APT proxy for downloads during installation
140893
Error when using apt-get update
21184
Running "sudo apt-get update" returns connection errors