Getting errors in update in ubuntu 16.04
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How do I fix the GPG error "NO_PUBKEY"?
6105
What is the easiest way to resolve apt-get BADSIG GPG errors?
23096
How to remove obsolete packages after failed release upgrade via do-release-upgrade on Ubuntu?
9322
Software Updater Issue 16.04
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Why am I getting authentication errors for packages from an Ubuntu repository?
13107
How to install updates via command line?
63176
How can I update to Ubuntu 21.04?
115648
dpkg exit with error "cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory", how to fix it?
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E: Sub-process /usr/bin/dpkg returned an error code (1) for almost all updates
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
157229
QGIS 2.18.5 update breaks on Ubuntu 16.04
84803
sudo apt get update gives error - The package cache file is corrupted
29212
Error while updating debug log trace flag
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Ubuntu 19.04 problems install upgrades
105708
Drupal failed after update
136237
After update, get "error: file not found." followed by "grub rescue> _"
16428
Upgrade to the latest PHP version in ubuntu 16.04