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(*) Logging In and Out

The good old dumb terminal connected to the computer's serial port was once the only means of connecting to a UNIX system.

Later, the TELNET program became popular for connecting in a network. 

For security reasons, the TELNET facility could be disabled on your system and the SECURE SHELL(SSH) could be the only means of connecting to a remote UNIX box.

In that case, UNIX and LINUX users can use the SSH command if available.

Windows users may use PUTTY or any of the free SSH programs available on the Net.

If you are using a workstation or desktop PC running Linux, then you can log in directly.

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