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<!--#include file="header.html" -->
<h3>Frequently Asked Questions</h3>
This is a collection of some of the more frequently asked questions
about BusyBox. Some of the questions even have answers. If you
have additions to this FAQ document, we would love to add them,
<ol>
<li><a href="#kernel">Which Linux kernel versions are supported?</a>
<li><a href="#arch">Which architectures does BusyBox run on?</a>
<li><a href="#libc">Which C libraries are supported?</a>
<li><a href="#commercial">Can I include BusyBox as part of the software on my device?</a>
<li><a href="#bugs">I think I found a bug in BusyBox! What should I do?!</a>
<li><a href="#job_control">Why do I keep getting "sh: can't access tty; job control
turned off" errors? Why doesn't Control-C work within my shell?</a>
<li><a href="#demanding">I demand that you to add &lt;favorite feature&gt; right now! How come
you don't answer all my questions on the mailing list instantly? I demand
that you help me with all of my problems <em>Right Now</em>!</a>
<li><a href="#helpme">I need help with BusyBox! What should I do?</a>
<li><a href="#contracts">I need you to add &lt;favorite feature&gt;! Are the BusyBox developers willing to
be paid in order to fix bugs or add in &lt;favorite feature&gt;? Are you willing to provide
support contracts?</a>
<li><a href="#support">I think you guys are great and I want to help support your work!</a>
</ol>
<hr />
<p>
<h2><a name="kernel">Which Linux kernel versions are supported?</a></h2>
<p>
Full functionality requires Linux 2.2.x or better. A large fraction of the
code should run on just about anything. While the current code is fairly
Linux specific, it should be fairly easy to port the majority of the code
to support, say, FreeBSD or Solaris, or Mac OS X, or even Windows (if you
are into that sort of thing).
<hr />
<p>
<h2><a name="arch">Which architectures does BusyBox run on?</a></h2>
<p>
BusyBox in general will build on any architecture supported by gcc.
Kernel module loading for 2.2 and 2.4 Linux kernels is currently
limited to ARM, CRIS, H8/300, x86, ia64, x86_64, m68k, MIPS, PowerPC,
S390, SH3/4/5, Sparc, v850e, and x86_64 for 2.4.x kernels.
With 2.6.x kernels, module loading support should work on all architectures.
<hr />
<p>
<h2><a name="libc">Which C libraries are supported?</a></h2>
<p>
uClibc and glibc are supported. People have been looking at newlib and
dietlibc, but they are currently considered unsupported, untested, or
worse. Linux-libc5 is no longer supported. If you require a small C
library, you should probably use uClibc.
<hr />
<p>
<h2><a name="commercial">Can I include BusyBox as part of the software on my device?</a>
Yes. As long as you <a href="http://busybox.net/license.html">fully comply
with the generous terms of the GPL BusyBox license</a> you can ship BusyBox
as part of the software on your device.
<a href="#support">Please consider sharing some of the money you make.</a>
<hr />
<p>
<h2><a name="bugs">I think I found a bug in BusyBox! What should I do?</h2>
<p>
If you find a problem with BusyBox, please submit a detailed bug report to
the BusyBox mailing list at <a href="mailto:busybox@mail.busybox.net">
busybox@mail.busybox.net</a>. Please do not send private email to Erik
(the maintainer of BusyBox) asking for private help unless you are planning
on paying for consulting services. When we answer questions on the BusyBox
mailing list, it helps everyone, while private answers help only you...
<p>
If you find bugs, please submit a detailed bug report to the BusyBox mailing
list at busybox@mail.busybox.net. A well-written bug report should include a
transcript of a shell session that demonstrates the bad behavior and enables
anyone else to duplicate the bug on their own machine. The following is such
an example:
<pre>
To: busybox@mail.busybox.net
From: diligent@testing.linux.org
Subject: /bin/date doesn't work
Package: BusyBox
Version: 1.00
When I execute BusyBox 'date' it produces unexpected results.
With GNU date I get the following output:
$ date
Fri Oct 8 14:19:41 MDT 2004
But when I use BusyBox date I get this instead:
$ date
illegal instruction
I am using Debian unstable, kernel version 2.4.27 on a x86 system,
and the latest uClibc from CVS. Thanks for the wonderful program!
-Diligent
</pre>
Note the careful description and use of examples showing not only what BusyBox
does, but also a counter example showing what an equivalent GNU app does. Bug
reports lacking proper detail may never be fixed... Thanks for understanding.
<hr />
<p>
<h2><a name="job_control">Why do I keep getting "sh: can't access tty; job control
turned off" errors? Why doesn't Control-C work within my shell?</a></h2>
<p>
Job control will be turned off since your shell can not obtain a controlling
terminal. This typically happens when you run your shell on /dev/console.
The kernel will not provide a controlling terminal on the /dev/console
device. Your should run your shell on a normal tty such as tty1 or ttyS0
and everything will work perfectly. If you <em>REALLY</em> want your shell
to run on /dev/console, then you can hack your kernel (if you are into that
sortof thing) by changing drivers/char/tty_io.c to change the lines where
it sets "noctty = 1;" to instead set it to "0". I recommend you instead
run your shell on a real console...
<hr />
<p>
<h2><a name="demanding">I demand that you to add &lt;favorite feature&gt; right now! How come
you don't answer all my questions on the mailing list instantly? I demand
that you help me with all of my problems <em>Right Now</em>!</a></h2>
<p>
You have not paid us a single cent and yet you still have the product of
many years of our work. We are not your slaves! We work on BusyBox
because we find it useful and interesting. If you go off flaming us, we
will ignore you.
<hr />
<p>
<h2><a name="helpme">I need help with BusyBox! What should I do?</a></h2>
<p>
If you find that you need help with BusyBox, you can ask for help on the
BusyBox mailing list at busybox@mail.busybox.net. In addition to the BusyBox
mailing list, Erik (andersee), Manuel (mjn3) and others are known to hang out
on the uClibc IRC channel: #uclibc on irc.freenode.net.
<p>
<b>Please do not send private email to Erik, Manuel, or the other BusyBox
contributors asking for private help unless you are planning on paying for
consulting services.</b>
<p>
When we answer questions on the BusyBox mailing list, it helps everyone
since people with similar problems in the future will be able to get help
by searching the mailing list archives. Private help is reserved as a paid
service. If you need to use private communication, or if you are serious
about getting timely assistance with BusyBox, you should seriously consider
paying for consulting services.
<p>
<hr />
<p>
<h2><a name="contracts">I need you to add &lt;favorite feature&gt;! Are the BusyBox
developers willing to be paid in order to fix bugs or add in &lt;favorite feature&gt;?
Are you willing to provide support contracts?</a></h2>
<p>
Sure! Now you have our attention! What you should do is contact <a
href="mailto:andersen@codepoet.org">Erik Andersen</a> of <a
href="http://codepoet-consulting.com/">CodePoet Consulting</a> to bid
on your project. If Erik is too busy to personally add your feature, there
are many other active BusyBox contributors who will almost certainly be able
to help you out. Erik can contact them and ask them about their availability,
and may even ask you to post your request for services on the mailing list.
<hr />
<p>
<h2><a name="support">I think you guys are great and I want to help support your work!</a></h2>
<p>
Wow, that would be great! Erik personally pays for all the bandwidth, and
all servers used for busybox.net out of his own pocket. If you would like
to make a donation to help support BusyBox, and/or request features, you
can click here:
<!-- Begin PayPal Logo -->
<center>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="andersen@codepoet.org">
<input type="hidden" name="item_name" value="Support BusyBox">
<input type="hidden" name="image_url" value="https://codepoet-consulting.com/images/codepoet.png">
<input type="hidden" name="no_shipping" value="1">
<input type="image" src="images/donate.png" name="submit" alt="Make donation using PayPal">
</form>
</center>
<!-- End PayPal Logo -->
If you prefer to contact Erik directly to make a donation, donate hardware,
request support, etc, you can contact
<a href="http://codepoet-consulting.com/">CodePoet Consulting</a> here.
CodePoet Consulting can accept both Visa and MasterCard for those that do not
trust PayPal...
<hr />
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