BUSYBOX
BusyBox

The Swiss Army Knife of Embedded Linux
BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides minimalist replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. The utilities in BusyBox generally have fewer options than their full-featured GNU cousins; however, the options that are included provide the expected functionality and behave very much like their GNU counterparts. BusyBox provides a fairly complete POSIX environment for any small or embedded system.

BusyBox has been written with size-optimization and limited resources in mind. It is also extremely modular so you can easily include or exclude commands (or features) at compile time. This makes it easy to customize your embedded systems. To create a working system, just add /dev, /etc, and a kernel.

BusyBox is maintained by Erik Andersen, and licensed under the GNU GENERAL PUBLIC LICENSE.

Screenshot

Because everybody loves screenshots, a screenshot of BusyBox is now available right here.

Mailing List Information

BusyBox now has a mailing list!
To subscribe, go and visit this page.
Latest News

  • 15 July 2003 -- BusyBox 1.0.0-pre1 released

    The busybox development series has been under construction for nearly two years now. Which is just entirely too long... So it is with great pleasure that I announce the imminent release of a new stable series. Due to the huge number of changes since the last stable release (and the usual mindless version number inflation) I am branding this new stable series verison 1.0.x...

    The point of "-preX" versions is to get a larger group of people and vendors testing, so any problems that turn up can be fixed prior to the magic 1.0.0 release (which should happen later this month)... I plan to release BusyBox 1.0.0-pre2 next Monday (July 21st), and, if necessary, -pre3 on July 28th. Hopefully (i.e. unless some horrible catastrophic problem turns up) the final BusyBox 1.0.0 release should be ready by the end of July.

    If you have submitted patches, and they are not in this release and I have not emailed you explaining why your patch was rejected, it is safe to say that I have lost your patch. That happens sometimes. Please do NOT send all your patches, support questions, etc, directly to Erik. I get hundreds of emails every day (which is why I end up losing patches sometimes in the flood)... The busybox mailing list is the right place to send your patches, support questions, etc.

    I would like to especially thank Vladimir Oleynik (vodz), Glenn McGrath (bug1), Robert Griebl (sandman), and Manuel Novoa III (mjn3) for their significant efforts and contributions that have made this release possible.

    As usual you can download busybox here. You don't really need to bother with the changelog, as the changes vs the stable version are way too extensive to easily enumerate. But you can take a look if you really want too.

    Have Fun!

  • Old News
    For the old news, visit the old news page.
Sponsors
Please visit our sponsors and thank them for their support! They have provided money for equipment and bandwidth. Next time you need help with a project, consider these fine companies! Several individuals have also contributed. If you have already contributed and would like your name added here, just let me know. If you would like to be a BusyBox sponsor, email Erik.
Download
Source for the latest release can always be downloaded from http://www.busybox.net/downloads.

BusyBox now has two CVS trees. The "busybox-stable" tree contains the older 0.60.x stable series. The "busybox" tree contains the latest 1.0.0-preX development version of busybox.
Documentation
Current documentation for BusyBox includes:
  • BusyBox.html. This is a list of the all the available commands in BusyBox with complete usage information and examples of how to use each app. I have spent a lot of time updating these docs and trying to make them fairly comprehensive. If you find any errors (factual, grammatical, whatever) please let me know.
  • README. This is the README file included in the busybox source release.
  • If you need more help, the BusyBox mailing list is a good place to start.
Important Links
  • Free Software from Bruce Perens
    The original idea for BusyBox, and all versions up to 0.26 were written by Bruce Perens. This is his BusyBox website.
  • Freshmeat AppIndex record for BusyBox
  • TinyLogin is a nice embedded tool for handling authentication, changing passwords, and similar tasks which nicely complements BusyBox.
  • udhcp is a tiny dhcp client and/or server which is ideal for embedded systems.
  • uClibc is a C library for embedded systems. You can actually statically link a "Hello World" application under x86 that only takes 4k (as opposed to 200k under GNU libc). It can do dynamic linking too and works nicely with BusyBox to create very small embedded Linux systems.
Products/Projects Using BusyBox

I know of the following products and/or projects that use BusyBox -- listed in the order I happen to add them to the web page:

Do you use BusyBox? I'd love to know about it and I'd be happy to link to you.

Mail all comments, insults, suggestions and bribes to Erik Andersen
The Busybox logo is copyright 1999-2002, Erik Andersen.		 This site created with the vi editor Graphics by GIMP Linux Today

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