Athena LS-50 User Manual download pdf

Introduction to Athena

RSI 2012 Staﬀ

Contents

What is Athena, Anyway? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Athena Rules of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Athena Rules of Use — Continued, Ethics . . . . . . . . . . . . . . . . . . . . . . . . 3

Athena Cluster Manners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Password Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

How Do I Find a Workstation? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Logging In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

The Screen Before You . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

The Shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Setting Up Your Acc ount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Files and their names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

The Shell Seven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Manipulating Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Moving Within Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Directories Redux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

~, ., .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Makin’ Copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Movin’ on up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Get It Outta Here! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Your turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Your turn, continued... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Public, Private, www and OldFiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Nautilus: A Graphical Alternative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

What’s the & for? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

I want my prompt back! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Renewing Your Tickets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Options and Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

It Started with a “C” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

I Want less! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

One Page at a Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Safer Deletion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Emacs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Emacs: What you see . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Minibuﬀer? But I Just Met Her! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Emacs Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Help! I’m stuck in a minibuﬀer! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Manipulating Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Manipulating Tex t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Search and Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Gedit: Easier than Emacs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Accessing your MIT email . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Lockers, More Than Places To Leave Bodies . . . . . . . . . . . . . . . . . . . . . . 44

Which Locker? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

A Few Not Altogethe r Useful Prog rams . . . . . . . . . . . . . . . . . . . . . . . . . 46

Running Firefox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

RSI Homepage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

MIT Certiﬁcates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Zephyr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Personal Zephyrs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Is There Anybody Out There? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

RSI Zephyr Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Don’t Be Overwhelmed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

More On Not Being Over whelmed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Information Resour ces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Workstation Secur ity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Logging Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Accessing your account from oﬀ cam pus . . . . . . . . . . . . . . . . . . . . . . . . . 59

Laptop Conﬁguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1

1 2 3 4 5 6 ... 16 17

Summary of Contents

Page 1 - Introduction to Athena

Introduction to AthenaRSI 2012 StaﬀContentsWhat is Athena, Anyway? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Athena Rules of

Page 2 - Athena Cluster Mann ers

Safer Deletion• delete is an Athena-ism that is rever sible . It ’s like the trashcan or recycling bin on MacOS or Wi ndows, except that itis automati

Page 3 - Logging In

Minibuﬀer? But I Just Met Her!The minibuﬀer is the bottom line of the emacs window. Itdisplays commands and me ssa ges. I t i s a source of many helpf

Page 4 - Directories

Manipulating Text• C-w Cut (“wipe”)• M-w Copy• C-y pastes (“yanks”) what was most recently cut or copied• C-k cuts the line to the right of the cursor

Page 5 - Moving Within Directories

Lockers, More Th an Places To Leave BodiesThe place where the ﬁles in your a ccount live is called a locker.Many groups also have lockers that contain

Page 6 - Movin’ on up. .

RSI Homepage• Go to the RSI homepage: http://web.mit.edu/rsi/www/• Look at the calendar and important announcements on thehomepage. Also, browse the l

Page 7 - Your turn, continued

Is There Anybody Out There?• T he command znol -l will list the people who ar e now loggedin and the machines they are on.• If you omit the option -l,

Page 8 - Renewing Your Tickets

Information ResourcesTo ﬁnd articles on your research topic, check out:1. MIT libraries (libraries.mit.edu): Engineering Library in Barker,Science Lib

Page 9 - One Page at a Time

Laptop ConﬁgurationWe DO NOT oﬃcially support laptop use at RSIWindows:• Download Se c ureCRT and X-Win32 from MIT(http://web.mit.edu/software)• Start

Page 10 - Emacs: What you see

What is Athena, Anyway?• MIT’s general computing system(E-mail, Internet access, text editing, spreadsheets, etc.)• Workstations• Home directories (2

Page 11 - Manipulating Files

Password SecurityAs mentioned above, you must keep your password secure.• Don’t let anyone know your password• No oﬃcial person, including Athena help

Page 12 - Gedit: Easier than Emacs

The Screen Before YouThe default screen has several notable features:• GNOME taskbar (the toolbar at the bottom)• GNOME menus (the menu bar on t he to

Page 13 - Running Firefox

Files and their namesYou can na me ﬁles almost anything you want with a fewrestrictions:• 255-character ma ximum• Letters, numbers, hyphens, perio ds,

Page 14 - Personal Zephyrs

Directories ReduxThe location of a ﬁle or directory is speciﬁed by its pat h. In thepath, diﬀerent objects are separated by a forward slash (/).Absolu

Page 15 - More On Not Being Overwhelmed

Get It Outta Here!• rm is the standard UNIX command. This permanently getsrid of the ﬁle and can’t be rever se d.• Well, alm ost. If your ﬁle existed

Page 16 - Logging Out

Nautilus: A Graphical AlternativeInstead of using cd and ls to view your ﬁles, you can useNautilus, which is a lot like Windows Explorer or the MacFin

Page 17 - Getting Help

Options and ArgumentsLet’s use the ls command to learn a bout options andarguments.• Options modify the action of the program. For example,you can use

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Athena LS-50 User Manual

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Summary of Contents

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