Your system administrator will have to assign you a username and password. Then, find the address of the system to log into and supply the correct credentials. Use telnet or even better, an SSH client to log in.
No difference, really. Unix is an OS (Operating System)
unix.
UNIX is a command-based OS. In contrast, Windows is a menu-based OS.
kernel is everything in unix os
Why do you believe this is necessary? What OS are you talking about?
LINUX and UNIX are vendor independent OS
Hewlett-Packard Unix. It is a series of computers that runs the Unix OS. Most people recognize the HP as a computer company in the acronym. This their version with the Unix OS.
Unix is a specification. Mac OS X is a certified implementation of Unix. This like asking "What is the difference between a turtle and a red-eared slider."
Windows, Unix, Mac OS
Yes.
It is a UNIX made.
Mac-OS=Disk operating system==Linux OS==Windows OS==Unix OS=