sudo apt-get update does not run
24355
Got NODATA issue: 'NODATA' (does the network require authentication?)
12368
A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
144214
Debian 8 apt-get update showing 404 Not Found
80899
"no public key available" on apt-get update
39732
How to fix apt-get install / update not working on my Kali Linux
131429
Why can't sudo find a command after I added it to PATH?
117623
Why do I need root-privileges to update my package manager's package list?
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages
144036
sudo apt-get curl and sudo apt-get wget gives "Invalid operation"
43917
What is the difference between apt-get update and upgrade?
127895
403 Forbidden error in sudo apt-get upgrade ubuntu 17.4
94793
How do you run update-grub?
103929
sudo apt upgrade error 18.04 (Broken Packages)
3693
How to make a package manager wait if another instance of APT is running?
16578
How to upgrade a single package using apt-get?
1512
Make apt-get (or aptitude) run with -y but not prompt for replacement of configuration files?
28650
`apt-get update` cannot find Ubuntu servers