To run the SPSS program for statistical analysis, our
class will rely on Northwestern's "hardin" and "seldon"
computers, which run the "UNIX" operating system in a
"distributed computing environment" (DCE).
- The names (hardin and seldon) come from characters in
a futuristic novel by I. Asimov.
- The computers are linked together under DCE, so it
doesn't matter which you enter.
- DCE allows storing and processing files on multiple
computers that are networked together.
- Like DOS, Windows, or the Macintosh OS, UNIX is a
command system for controlling a computer.
- It was originally created in 1969 by researchers at
Bell Laboratories, so it is not new.
- Nevertheless, it is currently used as the backbone of
many heavy-duty internet servers.
- Unfortunately, UNIX commands are cryptic and
confusing, but it is what we have to work with so you
need to learn a tinsy bit of UNIX.
- One important thing to know is that UNIX is
- Thus, "mother" and "Mother" are different terms to
- As you may have suspected, my mother (whom I
called Mother) was ethnically UNIX, which explains why
I am case-sensitive when it comes to e-mail
Use "telnet" to log into either UNIX computer over the
- Windows and Macintosh "telnet" programs are available
on the NU internet CD
- Enter either of these for the internet address:
- Once connected, you will see a short policy statement
and then the command line, login:
- How to log in (remember, UNIX is
case-sensitive and usually--but not always--uses lower
case in its commands):
- In this example: the red
type represents UNIX talking; boldface is my
- login: kjanda
- ^---Enter your account identification, then
press enter (return)
- ^---This is your initial password, then press
- hardin(kjanda) 41%
- Changing password for
- Enter current passwd for
kjanda: [type Change/Me here]
- New password: [type
your new password here--and be sure to remember
- Re-enter new password:
[retype your new password here]
- Password successfully changed
- Then logout to end your first session on hardin.
- hardin(kjanda) 42%
- ^--"logout" ends the session, most other
commands will not work