What does `!!` mean in `sudo !!`?
107980
Run same command again but as root
50931
What is the difference between #!/bin/sh and #!/bin/bash?
103008
What does !$ mean?
42571
How do I run a sudo command in Emacs?
47477
What is "!!" in C?
138013
How do the internals of sudo work?
98451
Why can't I echo the characters #! in a string in bash?
122144
'+' and 's' in permission strings
154567
difference between null != something and something != null
81334
What's exactly the point of the sudo command, in terms of security?
143770
Why does !! inside an alias not work?
15805
How to avoid being prompted for a password by sudo?
12875
Understanding the exclamation mark (!) in bash
15469
Difference between ! vs !! vs * in /etc/shadow
11604
su vs sudo -s vs sudo -i vs sudo bash
82077
Why is the root directory denoted by a / sign?
4746
How to solve "permission denied" when using sudo with redirection in Bash?