How Do I Log Into the Command Line?

At times it becomes necessary to administer your SEAS account from the unix command line. To access this interface, you must connect through one of several methods listed below.

From a Windows Lab

Once logged onto a CETS lab Windows computer, click the "Secure CRT" icon on the desktop, and select "eniac" as where you want to connect to. Log on with your user name and password. Your user name is the first part of your email address, i.e. username@seas.upenn.edu.

For additional help in the labs, visit one of the CETS help desks located in Levine Room 164, or search here in Answers for more specific questions. Once you are finished exploring the unix environment, type "exit" to log out.

WARNING: Closing the session while a program is running in the unix environment can lead to lost data. Try to use "exit" whenever possible.

Mac OS

  1. Open the Terminal application, which is in the Applications > Utilities folder.
  2. At the command prompt, enter
    % ssh user@eniac.seas.upenn.edu
    "User" is your SEAS username.

Linux or Unix

Open a console window and enter

% ssh user@eniac.seas.upenn.edu
at the command prompt. "User" is your SEAS username.

For detailed information on using ssh, see "What is SSH?"

From Another Windows Computer

SecureCRT
Van Dyke Technologies' SecureCRT is a secure SSH client provided for free to all Penn students and faculty by ISC. To download the client, visit http://www.upenn.edu/computing/product/specs/securecrt.html. After installing the client, follow these steps to connect:
  1. Double-click on the SecureCRT icon on the desktop.
  2. When the program opens, a list of hosts will be presented. Double-click on "eniac.seas.upenn.edu".
  3. The first time you connect to a server, a dialogue box will appear asking whether or not you would like to accept the new host key. Click on the button marked "Accept & Save".
  4. Enter your user name and password when prompted. Your username is the first part of your email address, i.e. username@eniac.seas.upenn.edu.
These instructions will place you at the unix command prompt. When you're finished, you can exit SecureCRT by simply typing "exit".

WARNING: Closing the session while a program is running in the unix environment can lead to lost data. Try to use "exit" whenever possible.
 

Running GUI applications on Eniac

You can use X11 forwarding or VNC to run GUI applications on Eniac.

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