Why can't I type my password after using a sudo command?
825
Nothing shows up in the terminal when I type my password
130030
Run a specific sudo command without a password in Ubuntu 13.10
135243
Why can't I login on the remote computer without a password after using SSH-KEYGEN command?
7987
Why is there a big delay after entering a wrong password?
3716
How do I add myself back as a sudo user?
27658
How to get GUI sudo password prompt without command line?
122621
Allowing a user to use sudo without a password
116001
Why does the root user need sudo permission?
78141
Sudo vs root; any actual differences?
130082
How to change root password in ubuntu?
47414
Can't login even with password Linux ubuntu
138013
How do the internals of sudo work?
18926
Type 'sudo' is not known in source list
45541
How to fix sudo after "chmod -R 777 /usr/bin"?
47119
Sudo comes up with an error, cannot run anything as root
54429
Why can't I sudo some commands? (e.g., vim)
139274
What's the difference between 'sudo [command]' and 'sudo sh [command]?