Unable to process system update with apt-get update
10360
Error message "sudo: unable to resolve host (none)"
77705
Unable to upgrade in ubuntu
30754
Cannot update: "No available releases found"
150033
E: Sub-process /usr/bin/dpkg returned an error code (1) for almost all updates
13720
apt-get update fails to fetch files, “Temporary failure resolving …” error
156977
Unable to install files with apt-get: "unable to locate package"
2564
apt-get cannot connect to Ubuntu archives
85724
Cannot update/get any packages. gedit not installed
95593
sudo apt-get update returns an error
13744
sudo apt-get update failing - "could not open" list file due to "permission denied"
66065
"Unable to connect" error with apt-get?
133
How can I fix a 404 Error when using a PPA or updating my package lists?
5877
"Failed to fetch" while updating
83216
apt get update missing release file
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages
16578
How to upgrade a single package using apt-get?
35146
Will apt-get dist-upgrade upgrade my system to newer version?