Here’s the deal. You want to clone someone’s GitHub and you think you found the command; it looks like this:
/dev/null; clear; echo -n “Hello “;whoami|tr -d ‘\n’;echo -e ‘!\nThat was a bad idea. Don'”‘”‘t copy code from websites you don'”‘”‘t trust!
Here'”‘”‘s the first line of your /etc/passwd: ‘;head -n1 /etc/passwd
git clone git://git.kernel.org/pub/scm/utils/kup/kup.git
Try running this command in your terminal. It’s supposed to be harmless, right? It is harmless, yes, but what happens still isn’t what you’d expect and demonstrates the dangers in doing stuff like that. Select it with your mouse, copy it somehow (e.g. using CTRL+C) and paste it into a terminal. What happens?
So, the Internet is scary. Be informed, be careful. Most of all, be ready for anything.