1 Please see the LICENSE file for details on copying and usage.
3 BusyBox combines tiny versions of many common UNIX utilities into a single
4 small executable. It provides minimalist replacements for most of the utilities
5 you usually find in GNU coreutils, util-linux, etc. The utilities in BusyBox
6 generally have fewer options than their full-featured GNU cousins; however, the
7 options that are included provide the expected functionality and behave very
8 much like their GNU counterparts.
10 BusyBox has been written with size-optimization and limited resources in mind.
11 It is also extremely modular so you can easily include or exclude commands (or
12 features) at compile time. This makes it easy to customize your embedded
13 systems. To create a working system, just add /dev, /etc, and a Linux kernel.
14 BusyBox provides a fairly complete POSIX environment for any small or embedded
17 BusyBox is extremely configurable. This allows you to include only the
18 components you need, thereby reducing binary size. Run 'make config' or
19 'make menuconfig' to select the functionality that you wish to enable.
21 After the build is complete, a busybox.links file is generated. This is
22 used by 'make install' to create symlinks to the BusyBox binary for all
23 compiled in functions. By default, 'make install' will place the symlink
24 forest into `pwd`/_install unless you have defined the PREFIX environment
25 variable (i.e., 'make PREFIX=/tmp/foo install')
27 If you wish to install hard links, rather than symlinks, you can use
28 'make PREFIX=/tmp/foo install-hardlinks' instead.
32 Supported architectures:
34 BusyBox in general will build on any architecture supported by gcc.
35 Kernel module loading for 2.2 and 2.4 Linux kernels is currently
36 limited to ARM, CRIS, H8/300, x86, ia64, x86_64, m68k, MIPS, PowerPC,
37 S390, SH3/4/5, Sparc, v850e, and x86_64 for 2.4.x kernels. For 2.6.x
38 kernels, kernel module loading support should work on all architectures.
41 Supported C Libraries:
43 uClibc and glibc are supported. People have been looking at newlib and
44 dietlibc, but they are currently considered unsupported, untested, or
45 worse. Linux-libc5 is no longer supported -- you should probably use uClibc
46 instead if you want a small C library.
50 Full functionality requires Linux 2.2.x or better. A large fraction of the
51 code should run on just about anything. While the current code is fairly
52 Linux specific, it should be fairly easy to port the majority of the code
53 to support, say, FreeBSD or Solaris, or Mac OS X, or even Windows (if you
54 are into that sort of thing).
60 When you find you need help, you can check out the BusyBox mailing list
61 archives at http://busybox.net/lists/busybox/ or even join
62 the mailing list if you are interested.
68 If you find bugs, please submit a detailed bug report to the BusyBox mailing
69 list at busybox@mail.busybox.net. A well-written bug report should include a
70 transcript of a shell session that demonstrates the bad behavior and enables
71 anyone else to duplicate the bug on their own machine. The following is such
74 To: busybox@mail.busybox.net
75 From: diligent@testing.linux.org
76 Subject: /bin/date doesn't work
81 When I execute BusyBox 'date' it produces unexpected results.
82 With GNU date I get the following output:
85 Fri Oct 8 14:19:41 MDT 2004
87 But when I use BusyBox date I get this instead:
92 I am using Debian unstable, kernel version 2.4.25-vrs2 on a Netwinder,
93 and the latest uClibc from CVS. Thanks for the wonderful program!
97 Note the careful description and use of examples showing not only what BusyBox
98 does, but also a counter example showing what an equivalent GNU app does. Bug
99 reports lacking such detail may never be fixed... Thanks for understanding.
105 Source for the latest released version, as well as daily snapshots, can always
107 http://busybox.net/downloads/
113 BusyBox now has its own publicly browsable CVS tree at:
114 http://busybox.net/cgi-bin/cvsweb/busybox/
116 Anonymous CVS access is available. For instructions, check out:
117 http://busybox.net/cvs_anon.html
119 For those that are actively contributing there is even CVS write access:
120 http://busybox.net/cvs_write.html
124 Please feed suggestions, bug reports, insults, and bribes back to:
126 <andersen@codepoet.org>