Using Secure Shell to Connect to the University's Central UNIX Servers from a Macintosh (OS X) Computer

Terminal is a program that lets you log into your UD account on a computer connected to the Internet. Unlike a regular telnet client, Terminal establishes a secure connection between the computers by encrypting your password and other data.

How to Begin a Terminal Session

1. To connect to the University's main UNIX server, launch the Terminal application, usually located on your hard drive in the Applications/Utilities folder.
   
   
   
   
   
2. If you are using your own computer, and it is registered with UD, you will see a window similar to the one below showing your login name. After the $ prompt, type: ssh copland.udel.edu (or another server name if you wish to connect to a different host) and press RETURN.
   
   
   
   Note: If your name on your computer is different from your UDelNet ID, type the following at the $ prompt:
   
   ssh yourudelnetid@udel.edu
   
   and press RETURN.
   
3. Type your Unix password when prompted, and press RETURN.
4. You will also need to set the terminal type to have the Terminal application work correctly with the University's web servers. To do this:
   1. From the Terminal menu, select Preferences. You will see a window like the one below:

      

   2. Make sure the terminal type ($TERM) is set to vt100. If it is not, select vt100 from the pull-down menu. and close the window.
5. The first time you establish an SSH connection to a specific computer, you must accept the remote computer's key fingerprint in order to have a secure connection. Type: yes and press RETURN.
   
   
   
   
6. You can now work on the remote computer by typing UNIX commands and pressing the RETURN key after each command.
   
   Note: To delete a word when typing on the command line, simultaneously press the Control and W keys on the keyboard. This will delete the last word you typed.

Note:

• If you are using someone else's computer or working in a computing site, to log in type: ssh -l  yourudelnetid copland.udel.edu, and press RETURN.
  
  

• If you wish to connect to a different server, at the $ prompt, type: ssh -l  yourudelnetid <host server name> and press RETURN. Type in your UNIX password when prompted, and press RETURN.

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Printing from Secure Shell Sessions

Since Secure Shell establishes a connection to a remote UNIX server, you can print files and e-mail messages on the University's central printers using standard UNIX commands. If, however, you wish to print e-mail messages or files using a local printer (e.g., one directly connected to your computer), follow these steps:

1. If you are using Pine to read e-mail, use the Pine E (export) command to save the message to a file.

   Exit or suspend the Pine program.

2. Use the UNIX cat command to display the contents of the file you wish to print on your terminal screen. For example, if the file is named "katmessage", type this command at the UNI Xprompt then press the RETURN key to display the file:
   

    cat
   katmessage

3. If necessary, use the scrollbar to the right of the Secure Shell window to scroll backwards to the point in your session at which the beginning of the file is displayed.
   
4. Highlight the entire display of the file you wish to print.
   
5. With the text highlighted, select Print ... from the File menu and make any desired print selections.
   
6. Click Print to print the file or message.

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Ending your SSH session

To end your SSH session, follow these two steps:

1. At the UNIX server's prompt, type exit as shown below:

   

   Press the RETURN key. You are now logged out from the UNIX server.

2. Quit the SSH program by pressing COMMAND-Q. (Press the COMMAND or Apple key and the Q key simultaneously.)

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For further information about the University's central UNIX servers and about Pine and other UNIX programs, visit the IT Help Center's Web site (http://www.udel.edu/help).

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