Root password in Ubuntu?
Written on July 5, 2008 at 11:19 am by
mkyong
Ubuntu didn’t ask my password for root user during installation. So i guess as default Ubuntu has no password set for the root user. To gain root access , type followng command in shell.
sudo passwd
It will prompt to enter password that we set for the first user while installing Ubuntu. After that you are asked to type in the new root password twice. Finally, your root user has its own password.
This article was posted in Unix / Linux category.
Oracle Magazine - Free Magazine
Oracle Magazine contains technology strategy articles, sample code, tips, Oracle and partner news, how to articles for Java's developers and DBAs, and more.
Securing & Optimizing Linux: The Hacking Solution - Free Guide
A comprehensive collection of Linux security products and explanations in the most simple and structured manner on how to safely and easily configure and run many popular Linux-based applications and services.
The Windows 7 Guide: From Newbies to Pros - Free Guide
In this 46 page guide you will be introduced to Windows 7 and what it has to offer. This guide will go over the software compatible issues, you will learn about the new taskbar, how to use and customize Windows Aero, what Windows 7 Libraries are all about, what software is included in Windows 7, and how easy networking is with Windows 7 along with other topics.
All Java Tutorials
- Java Core Technology - Java RegEx, Java XML, Java I/O, Java Misc
- J2EE Frameworks - Hibernate, Spring 2.5, Spring MVC, Struts 1.x, Struts 2.x
- Build Tools - Maven, Archiva
- Unit Test - jUnit, TestNG
- Client Scripts - jQuery

I think the reason why Ubuntu does not ask for a root password during installation is that giving root a password creates a security weakness, in that if crackers know that they’re trying to crack a linux system, they will attack the root account first. If there’s no password for the root account, no one can log into the root account unless it’s through another administrative user account, which they will have to figure out the user name and password to.
By default, Ubuntu does not allow direct logging in to the root account.
thanks for the detail explanation ~