2004.09_Command Line-Imagemagick-Non Gui Image Editing.pdf

LINUX MAGAZINE

September 2004

NEWS

30 POP3 Antispam

If you regularly recieve unsolicited email -

and let’s be honest, everyone does - you

might prefer to handle and delete the

junk from your ISP’s mail server,

rather than downloading first to your

machine.

This saves you both download

time for your mail and hard disk

space on your computer.

We take a look at some of the

modern Linux tools that you can

deploy to help you in this task.

Some even allow filters to auto-

matically delete the spam for

you.

Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

World . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Insecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Kernel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Letters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

COVER STORY

No More Spam Intro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

40 PlanMaker

After porting its TextMaker word processing software to

Linux last year, SoftMaker is following up with its new

spreadsheet application, PlanMaker. We take a look at the

pre-release version, which is close to completion, and show

off a few of its impressive features.

Protection against Attacks . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Harden your system against intruder attack with our

straightforward guide.

Spam-proof Homepages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Make the email addresses on your homepage invisible to

harvesting spiders.

With a tiny

memory foot-

print, PlanMaker

runs very, very

fast. However

this alone is not

enough, and we

look at whether

the useability jus-

tifies the cost.

POP3 Antispam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ClamAV Antivirus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Clean all your email under Linux with ClamAV.

REVIEWS

Book Reviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Read all about it. Network Security Hacks, Linux unwired,

and Hacking for Dummies.

42 Lightweight Linux

More features usually mean more software. Adding more

software can mean adding unecessary ballast to your sys-

tem. It is not just older systems that slow down as you add

more processes and jobs for them to handle. Just imagine

how streamlined and efficient your systems could be, if you

removed all the unwanted junk from the set up.

Less services also

means less chance

of a security flaw.

Because of this,

we teach you how

to slim down a stan-

dard distribution to

save you the trouble

of making your

own.

PlanMaker

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

KNOW HOW

Lightweight Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

PHPNuke: Installation & Configuration . . . . . . . . . . . . 48

BitTorrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Understand the new downloading protocol.

MySQL Database Management . . . . . . . . . . . . . . . . . . . . . 54

Set up your own MySQL databases at home.

September 2004

www.linux-magazine.com

September 2004

LINUX MAGAZINE

48 PHPNuke: Installation & Configuration

For anyone who wants to set up their own portal website,

PHPNuke offers an impressive range of powerful features

and an easy installation.

Coupled with many add-

ons and an extensive

support network, PHPNuke

could be just the right

choice for individuals, clubs

and even businesses.

In this article, we show

you how to set up just such

a system for your own use,

and tell you honestly about

the problems and worries of

the system.

SYSADMIN

Charly’s column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Real system admin tips and tricks to help you.

Wakeup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Admin Workshop: Security Mailing Lists . . . . . . . . . . 64

Being proactive and not just reactive for security. MING

PROGRAMMING

Mozilla XUL: Making Interfaces . . . . . . . . . . . . . . . . . . . 66

Adding widgets and facilities to graphical interfaces.

Perl: Algebra & Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Solve equations and draw graphs with Perl.

60 Wakeup

This month, we take a look at the various methods of pro-

gramming a wakeup service for your computer. Switching off

computers that do not need to run twenty four hours a day

can dramatically cut your power consumption. That is good

both for the environment and your cash flow.

We look at three

different methods

of programming a

wakeup time

under Linux with-

out needing to

constantly set the

time manually in

the computers’

hardware BIOS.

LINUX USER

KTools: Service Menus for Konqueror . . . . . . . . . . . . . . 74

Make use of the right mouse button.

Filelight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Find the space hogs on your disks.

DeskTOPia: FVWM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Command Line: ImageMagick . . . . . . . . . . . . . . . . . . . . . . 82

Image manipulation on the command line.

Konsole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

COMMUNITY

78 FVWM

Computers should adapt to human requirements, and not

vice versa. This is a golden rule of ergonomics. One of the

oldest window managers, FVWM, is a shining example of

flexibility and configurability. This alone makes it one of the

most efficient window managers for your individual needs.

To leverage the

full power of

FVWM requires

you having to

overcome the hur-

dle of editing

configuration files.

We show you how

this is done, so

you can get mouse

gestures to work.

Guadec 2004, Kristiansand . . . . . . . . . . . . . . . . . . . . . . . . 86

Wizards of OS 3, Berlin

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Free Software Projects

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Brave GNU World . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

SERVICE

Linux Magazine DVD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Event Calendar / Advertiser Index . . . . . . . . . . . . . . . . . 96

Contact Info / UserFriendly . . . . . . . . . . . . . . . . . . . . . . . . . 97

Next Month

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

www.linux-magazine.com September 2004

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