When I run the command sudo apt-get update , I found an error on ubuntu 16.04 LTS
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How can I fix apt error "W: Target Packages ... is configured multiple times"?
64509
Can't update from official repositories [Error 409]
60784
relocation error using sudo apt
35931
Apt update error - "An error occurred during the signature verification" (Chrome)
93246
How to resolve conflicting distributions in apt-get
28650
`apt-get update` cannot find Ubuntu servers
154622
How do I resolve this installation error?
17208
What does this apt error message ("Download is performed unsandboxed as root...") mean?
103929
sudo apt upgrade error 18.04 (Broken Packages)
152823
PPAs will not install "sudo: add-apt-repository: command not found"
105770
Cannot use apt-get/dpkg -- Input/output error
22164
Problem with sudo apt get update: The repository cdrom... does not have a Release file
127668
"Unable to locate package sudo" when i try to install sudo on new Debian
44313
How to run "sudo apt-get update" through proxy in commandline?
44683
Problem with sudo apt update in Ubuntu 18.04: Post-Invoke-Success if /usr/bin/test -w /var/lib/command-not-found/
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sudo apt-get curl and sudo apt-get wget gives "Invalid operation"
47738
Error after sudo-ing "sudo: must be setuid root"