Workaround to Hash sum mismatch in apt-get update behind firewall
4853
Trouble downloading packages list due to a "Hash sum mismatch" error
4248
How to fix apt: Signature by key uses weak digest algorithm (SHA1)?
64509
Can't update from official repositories [Error 409]
103264
Best way to cache apt downloads on a LAN?
34720
What is the difference in command-line "sudo apt-get update" and using Synaptic or Auto-updater?
115896
How can I install the $0 applications from the Ubuntu Software Center with apt-get?
34069
Why am I getting authentication errors for packages from an Ubuntu repository?
44313
How to run "sudo apt-get update" through proxy in commandline?
113145
What does 'apt-get install update' do?
49149
How do I solve "Unable to fetch some archives, maybe run apt-get update or try with --fix-missing" error?
20710
Apt update fails at chrome stable main: "File has unexpected size (1103 != 1104). Mirror sync in progress?"
65019
apt looking for i386 files, even though architecture is amd64
75879
How do I get add-apt-repository to work through a proxy?
9896
How do I get and modify the source code of packages installed through apt-get?
8722
How to make apt recognize an installed tar package?
12368
A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
122742
Why does apt-get install a newer dependency than supported by the specified package