1. What's grove
2. Using your keyboard
3. Connecting to grove
4. Your login name
5. Your password
6. Your Unix shell
7. Common grove commands

Grove is a cluster of Digital Alpha computers. Grove runs the Unix operating system. Unix is a multi-user computer operating system used on many computers in the world.

Grove is connected to the Internet and can be used for electronic mail and many network applications. The Internet address (host name) for grove is:

grove.ufl.edu

This address is part of your electronic mail address on grove and is grove's name when logging in using a telnet network connection.

Accounts on grove are available to all UF undergraduate and graduate students. You can open an account online, in CIRCA public labs (CSE 211), or in room E520 CSE. For online instructions, see the CIRCA handout Computer services available from CIRCA or call the UF Computing Help Desk at 392-HELP.

Proper use of this computer is your responsibility. Don't use this computer unless you have read the CIRCA handout Policies for use of CIRCA computers. CIRCA handouts are available in E520 CSE and on the CIRCA web site at URL: http://www.circa.ufl.edu.

Using your keyboard

Unix systems are case-sensitive so be sure to type commands, file names, and other input in the correct case. Nearly all commands in Unix are in lower case.

Use the control key (Ctrl) in combination with another key to send a special control character to the computer. The control key is like a shift key that is held down while another key is pressed. For example, to type Ctrl-U, press and hold the Ctrl key and press the U key.

Use the delete key (Del) to erase the last character you typed. On the VT220 terminals in E211 CSE, the delete key is the large key with an X just above the Return key. On other keyboards, the key may be labeled Del or Delete. On some microcomputers, the Backspace key may be equivalent to the delete key.

The erase, kill, and interrupt characters have special meaning to Unix systems. On CIRCA's Unix system, these characters are mapped to the keyboard as follows:

character	key	meaning
erase	del	Erase last character on screen
kill	Ctrl-U	Discard current input line
interrupt	Ctrl-C	Interrupts a command

Connecting to grove

You can connect to grove from CIRCA lab terminals, CIRCA lab microcomputers, other campus computers, and from off-campus locations using a modem. Follow these directions:

CIRCA lab terminals

From CIRCA terminals in E211 CSE, press the return key until you see Local> on the screen. Then type:

Local> connect grove

CIRCA lab microcomputers

From IBM PC microcomputers running Windows 95, double-click the grove icon on the desktop.

From IBM PC microcomputers running Windows 3.1, select the grove icon from the Internet Tools program group icon.

From Macintosh microcomputers, select grove by double-clicking the following in order: the file cabinet icon on your desktop, the Macintosh folder, the Applications folder, the Telnet folder, the Grove icon.

Using a Modem

You can use a Gatorlink Dialup or NERDC account to connect to grove. If you dial using PPP (Internet dialup) software, use telnet software on your microcomputer to connect to grove after getting an Internet dialup connection. Telnet software is built into Windows 95 computers (type telnet grove.ufl.edu after choosing Start, Run...). The UF Software CD contains Telnet software for Windows 3.11 and Macintosh.

PPP (Internet dialup) software is not necessary to access Grove. Use the software that came with your modem or other terminal emulation software, such as Terminal or HyperTerminal. To dial:

1. Set the following parameters in your modem software. You will have to find the menu in which you set them. Consult your modem software manual or look for the settings under menu items like communications or terminal settings:

   data bits = 8
parity = N (none)
stop bits = 1

2. Dial the number 846-1501.

3. Login using your Gatorlink or NERDC username and password.
4. At the NERDC-TSx> prompt type: telnet grove.ufl.edu

For more information about modem programs, refer to the CIRCA handout Using a Modem.

From other campus computers

Grove can be reached from any Internet-connected computer using the telnet command or telnet software.

You have a login name and a password that identifies you as a valid user of the computer. If you have a personal account, you chose the login name and password when you applied for the account. (If your account is created in E520 CSE, the initial password is the first letter of your last name followed by the last four digits of your Social Security Number.)

If you received an account from your instructor, the login name and password are on the card you received from your instructor.

After connecting, enter your login name and password when prompted by the computer.

If your login name is john, this will look like this:

login: john
Password:

Your password will not be displayed on the screen.

To log out, type this command and press Return:

logout

If you had your account created in E520 CSE, the first time you use you account, you must change your password. Be prepared to enter a new password when you use the account. Choose a password using the guidelines below.

Always logout of your account when you are finished working.

Your password

Your password can help protect your account from unauthorized use or damage and you from harassment. but only if it's hard to guess. It should also be something you can remember without writing down. Anything you come up with easily is probably too easy for computer criminals, too. In fact, to come up with a good password it's best to think about it some time before you actually do it. One way to make a password is to think up a sentence, and just use the first letter of each word, keeping the punctuation. For instance, "This is one good way to make a password" becomes "T=1gw2map." ("=" for is.) Of course, that particular password is now a terrible password, because it is in a public document.

You don't have to make your passwords from sentences. Any scheme that would force an attacker to make millions of guesses will do. Whatever way you choose to build your password, you should:

• Never tell anyone your password, or let them see you type it. Don't write it down or store it on a file in a computer.
  
• Use a password of at least ten characters.
  
• Don't use anything obviously connected to you, like your name, username, or ID number. Don't use a common word or phrase.
  
• Use a mixture of letters, symbols, and numbers. The password can contain any printable character.
  
• Change your password completely whenever you change it. If someone has learned an old password, they might guess at your new password.
  

More thorough guidelines are available at http://www.circa.ufl.edu/password. The password changer itself will try to protect you from bad passwords. You can change your password by typing:

passwd

Your Unix shell

The grove computer runs a Unix operating system. An introduction to Unix files and file commands is given in the CIRCA handout Quick Guide to Unix commands.

The shell is the program that accepts and acts on the commands you type at the keyboard. On grove, your account is set to use the T shell, tcsh. It is not possible to change your default shell from the T shell. If you want to use a different shell, you can execute that shell at the command line. For example, to run the Korn shell, type:

ksh

Common grove commands

All commands listed below should be typed after login at the unix shell prompt >. Extended Unix system help can be viewed by typing "man commandname". Grove specific information is available on the Grove web home page at http://grove.ufl.edu. To view the page, type "lynx" at the grove prompt.

Command	Description
pine*	recommended mail command, menu driven
lpr*	print command
lynx	fullscreen text-based World Wide Web browser
tin*	news reader
ph	on-line phone book, access to UF email directory
ftp*	Internet file transfer, often used to obtain public files
telnet*	allows you to login to another Internet computer
telegator*	connects to UF on-line registration system
websetup	sets up a personal Web page on your grove account
pico*	easy to use text editor, often used to make minor Web page modifications

* A CIRCA handout is available which addresses the topic.

A Grove Basics class is offered through the CIRCA Computer Training Program. Refer to the URL: http://www.circa.ufl.edu/circa/classes/classes.html or call the UF Computing Help Desk for more information.