Embedded Linux Applications: An Overview
By Darrick Addison2005-04-30
Configuration Procedures
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Now let's take a look at how to make LEM, a small, embeddable Linux distribution, which provides both network and X server. You can download this distribution, although it is not essential. You will need a full Linux distribution to build your own Embedded Linux operating system, which will contain everything you need (utilities, sources, compiler, debugger, and documentation). Here is a list of the software that can be used to make LEM:
TinyLogin: TinyLogin is a suite of tiny UNIX utilities for handling logging into, being authenticated by, changing one's password for, and otherwise maintaining users and groups on an embedded system. It also provides shadow password support to enhance system security. TinyLogin is, as the name implies, very small, and makes an excellent complement to BusyBox on an embedded System.
BusyBox: BusyBox is a multicall binary used to provide a minimal subset of POSIX-style commands and specialized functions. It is geared toward the very small, such as boot floppies, embedded systems, etc. Specifically it is used in the Debian Rescue/Install system (which inspired development on the original BusyBox ), the Linux Routeur Project, LEM, lineo, and others. Busybox is being maintained by Erik Andersen.
Ash: Ash is a very small Bourne shell.
Sysvinit: Sysvinit is the most used init package for Linux. We will use init and the C version of the start-stop-daemon.
See the Resources section for more information on these items.
Tutorial Pages:
» From Wrist Watches to Cluster-Based Supercomputers
» Emergence of Embedded Systems
» Advantages/Disadvantages of Using Linux for Your Embedded System
» Software and Hardware Requirements
» Hardware Platform Options
» Real-Time Embedded Linux Applications
» Configuration Procedures
» Creating a Bootdisk
» Installing TinyLogin and Login Dependencies
» Summary
» Resources
First published by IBM DeveloperWorks
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