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CHAPTER 10. PACKAGING SYSTEM

CHAPTER 10

Packaging System

Some info comes from [5].

10.1 Introduction

any modern distribution,

Angstr

om is fully package-based. However, as interaction with

the device during initial setup phase is difﬁcult,

Angstr

om is bootstrapped using an “image,”

which is essentially a set of core packages already merged into archive or ﬁlesystem image. This

image is installed using device-speciﬁc means, and provides basic

Angstr

om functionality.

Adhering with the

Angstr

om’s aim of ﬂexibility and best practices of Linux system management,

the images provide only core packages, allowing users to customize system to their needs by easily

installing any required software from a wealth of

Angstr

om’s feeds. However, as a convenience to

users, different kinds of images are provided, for example, with (core packages of) different GUI

environments pre-installed.

10.2 Core Principle

The packaging system was ﬁrstly based on

ipkg

(Itsy Packaging system), which was developed

a long time ago for the Itsy handheld project, by Compaq. The original

ipkg

may

have been

developed by Kernel Concepts (

http://www.kernelconcepts.de

). For example, its

.conf

ﬁles

are stored in

/etc/ipkg/

. When that project closed down and

http://www.handhelds.org

came

to be,

ipkg

was ported to the ‘Familiar’ system, running on the iPAQ

hx4700

opkg

appears to

have been developed by OpenedHand Ltd. (

http://www.openedhand.com

.) The home of

opkg

http://opkg.googlecode.com

. The preconﬁgured feeds are located at

/etc/opkg

, and, according

to [?], opkg is replacing ipkg, for different reasons; opkg has the following advantages:

• maintained, when ipkg is not,

• two companies behind it,

According to a comment in src/opkg-frontend.c in opkg-0.1.7.

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Sharp SL-5500 File Manager Guide Manuale Utente Pagina 36

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