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Direct login refers to the short process of either logging in
via the workstation console of one of the computers (i.e. Carl in room
T145) or inevitably one of the intermediate steps in logging in via any
other method (unless you have `.rhosts' or `.netrc' set
up---more on that later). At some point, you will see a login window in
the center of the screen. Simply enter in your username, press
RET, type in your password, and press RET again:
Username: username
Password:
Note that, while your username is echoed on the screen as you type, your password is not. This helps keep your password secure; however, if you have fumble-fingers, the computer may reject your password and you will have to go through the entire process again. To log out, you may simply type logout (on VAX and UNIX systems), exit (UNIX only), or CTL-d (UNIX) at the prompt. Note that xdm is slightly different.
The X Display Manager is a program used to log into the Unix
Cluster from an X terminal.. (Be sure to see Windows
for more detailed information on the X-Window system.) The xdm displays
a menu on your screen that gives you a choice of machines (i.e. Suntsu,
Carl, Lyman) to connect to. Double click with the mouse button on the
one you want, and a screen will pop up with a Login: and
Password: prompt. Logging out of individual xdm windows
are the same as direct login `logout'; to end the entire session, you
must press ALT-SFT-CTL-RET or drag down the center mouse button to
`Other......' and select `Exit XWindows.'
Note---the xdm runs a file in your home directory known as
`.xsession' to set up the windows and initial clients. However, if
you have an error in your file, you may never get logged in properly to
correct it. If this happens, type the F1 key instead of RET
after your password. Then the xdm skips your `.xsession' and runs a
default version which puts up only one window. Then you can proceed to
correct the problem. (See XStart, and
See Customizing, for more information about
initialization files.)
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