If you are not aware yet, every Facebook account has a privacy option to block users based on their name or e-mail address. Once you block someone, you cut all ties with them, including friendship, comments, etc. They will not be able to interact with you nor be able to search for you on Facebook.

If your organisation has password aging policy set for your UNIX servers, there is a possibility that the root account may also get locked out due to the existence of an expiry date set in the /etc/shadow file. Once the root account is locked, all jobs (cron, etc) that require root privileges may start to fail. To unlock the root account on a SUN SPARC machine, you will need to:

You can change the Windows Domain User Account Password from the Command Line using the net command. This is applicable to Windows NT line of operating systems – NT 4, Windows 2000, Windows XP Pro, Windows Vista and so on.

Ubuntu Linux distribution, by default, disables the root account. To run a command with root privileges, sudo has to be used before the command.