Highlight Your Shell Prompt When Working as Root

“A useful thing that some distros have started doing is setting
the color of your shell prompt differently if you’re logged in as
root. This gives you an additional visual cue that helps avoid
doing things as root when you don’t want to. If your distro doesn’t
do this for you, you can accomplish it by changing your .bashrc
files. To set the color of your shell prompt you set the shell
variable PS1.

“To make the prompt red when you’re running as root add this to

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