Change root password

Q. How do I change the root password on a linux ( unix ) operating system ?
R. What you need to do in order to change the root account password on a linux or unix machine is:
- open a terminal an login as root ( if the system permits loging in as root )
or
- open a terminal, login with your account and type “su” to become root.
Enter the ( old ) root password to login
then type “passwd” and it will prompt you for a new password.
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root@ibm:/# passwd
Changing password for root
Enter the new password (minimum of 5, maximum of 127 characters)
Please use a combination of upper and lower case letters and numbers.
New password: **********
Re-enter new password: **********

Password changed.
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This should be all.
P.S. The password should be rather complex, containing numbers and letters. However try to pic one that you will remember easily, but not known by everybody.
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