Why need to sudo?

[hajime]

Hello, my MacBook Pro has three user accounts. I am the main user with Administration rights. How come under xterm, whenever I try to do something (changing names, moving files to /usr/local or subfolders, I need to add "sudo" before the commands?

 

[sjinsjca]

It's basically a way to say, "I've thought twice about what I'm about to ask you to do."

 

[Intell]

It's similar to Windows User Account Control feature. It's there to prevent an unauthorized malicious software from harming your system.

 

[hajime]

Thank you.