sudo lockout can not access updates or, add packages
82
How do I reset a lost administrative password?
73973
After typing "apt-get update" terminal says Could not open lock file
44313
How to run "sudo apt-get update" through proxy in commandline?
66222
'sudo' not working after changing the permissions of '/usr' directory
30068
Update: Failed to lock /var/cache/apt/archives/lock
13760
How do I grant sudo privileges to an existing user?
80078
How can I fix broken sudo - sudo: parse error in /etc/sudoers near line 23?
130128
npm installed packages are not accessible
47738
Error after sudo-ing "sudo: must be setuid root"
136771
Why is sudoers NOPASSWD option not working?
103004
What environment do I get with sudo?
146117
Update locked within terminal
117623
Why do I need root-privileges to update my package manager's package list?
91611
Unable to use package manager due to "exclusive lock" error
62855
sudo add-apt-repository throws an exception
76241
"no public key available" while upgrading using update-manager
10360
Error message "sudo: unable to resolve host (none)"