isn't the usage of sudo quite unnecessary? people say it increases security...but how?...we are adding the sudo user to sudo group and ultimately the command is run with root power...a sudo user can do anything a root user can do, because he is the one who knows root password..then what is the use for sudo except for typing four more letters before every command..if i am right, this helps only in repetetive stress injuries in fingers and hand.. lets just admit it... sudo is just unnecessary show off.. its better to root

CodePudding user response：

When I was young I helped with a project to replace the roof of an elderly woman's house. I spent most of the day walking around the roof carrying a nail gun. As a safety feature, the nail gun would not fire unless you both pressed the trigger and depressed the tip of the muzzle. When using the nail gun, I would hold the trigger, and bump the tip at each location where I wanted a nail. When I was done, I took my finger off the trigger. Sometimes, I only needed to nail one spot, so I would place the tip, and pull the trigger to fire a single nail.

In the course of that day, I accidentally bumped the tip into someone's hand, and into someone else's knee. If I had been holding the trigger, I probably would have sent both of them to the hospital.

If you are doing lots of things that need root privilege, you can log in as root. If you just need to do a couple of things, sudo can be useful as well. Just watch out that you don't send a server to the hospital.