Ubuntu 13.04 users switching without password
88156
Can I set my user account to have no password?
74011
allow sudo to another user without password
49872
Possible to reset Keychain password without knowing the old password?
142930
What is the default password for Ubuntu 12.04?
14589
Execute sudo without Password?
52627
Change default user for authentication
92301
Is it possible to shutdown remote Computers without inputing the password?
102006
Run a shell script as another user that has no password
77610
how to reset a lost admin password?
156896
Is it possible to create an Admin Password Key to conveniently login?
152745
Set a password that's not linked to my Microsoft account?
97085
How can I make shutdown not require admin password?
145864
How do I get Ubuntu to ask me for a password at login again?
101530
How do I set up SSH so I don't have to type my password?
125001
Best way for a 'forgot password' implementation?
14551
How do I remove Ubuntu's password requirement?
151034
SSH: completly disabling password authentication