BusyBox package
Information on this package is covered here.
|
Package
|
Description
|
License
|
|
BusyBox
|
BusyBox multicall binary that provides UNIX environment.
|
|
Summary
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 coreutils, util-linux, 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 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 Linux kernel. BusyBox provides a fairly complete POSIX environment for any small or embedded system.
BusyBox is extremely configurable. This allows you to include only the components you need, thereby reducing binary size. Run 'make config' or 'make menuconfig' to select the functionality that you wish to enable. The run 'make' to compile BusyBox using your configuration.
The Devicescape distribution includes the following features from BusyBox by default:
|
[
|
getty
|
ln
|
reboot
|
tftp
|
|
ar
|
grep
|
loadkmap
|
reset
|
top
|
|
ash
|
gunzip
|
logger
|
rm
|
touch
|
|
cat
|
gzip
|
login
|
rmdir
|
tr
|
|
chgrp
|
halt
|
ls
|
rmmod
|
traceroute
|
|
chmod
|
head
|
lsmod
|
route
|
true
|
|
chown
|
hostname
|
md5sum
|
run-parts
|
tty
|
|
chroot
|
httpd
|
mkdir
|
sed
|
udhcpc
|
|
clear
|
id
|
mknod
|
sh
|
udhcpd
|
|
cp
|
ifconfig
|
modprobe
|
sleep
|
umount
|
|
cut
|
ifdown
|
more
|
sort
|
uname
|
|
df
|
ifup
|
mount
|
start-stop-daemon
|
uniq
|
|
dirname
|
inetd
|
mv
|
swapoff
|
uptime
|
|
dmesg
|
init
|
netstat
|
swapon
|
vconfig
|
|
echo
|
insmod
|
passwd
|
syslogd
|
vi
|
|
expr
|
ip
|
ping
|
sync
|
wc
|
|
false
|
iproute
|
poweroff
|
tail
|
wget
|
|
fgrep
|
kill
|
ps
|
tar
|
which
|
|
find
|
killall
|
pwd
|
telnet
|
whoami
|
|
free
|
klogd
|
|
telnetd
|
xargs
|
| |
|
|
test
|
zcat
|
Usage
Start/Stop Options
The platform provides initialization scripts for some of the more commonly used daemons in the BusyBox set. These are:
|
Daemon
|
Package
|
|
telnetd
|
ds-init-telnetd
|
Additionally, the platform provides init scripts used to initialize the basic system functions, such as loading kernel modules, starting networking and mounting file systems. These scripts are all built using the init support in BusyBox. The scripts are provided in the ds-init package, and are run using the standard "/etc/init.d/script start|stop|restart" syntax, or by using indexed symbolic links from the /etc/rc.d directory (for example, /etc/rc.d/S20mountall -> /etc/init.d/mountall). The scripts that are included are:
|
Script
|
Description
|
|
getty
|
Starts/stops the getty service
|
|
mountall
|
Mounts all filesystems listed in /etc/fstab
|
|
networking
|
Starts all interfaces listed as "auto" in the /etc/network/interfaces file
|
/etc/init.d/rc handles the automatic execution of the init scripts that are linked into /etc/rc.d .
Runtime Configuration
While BusyBox itself has no real runtime configuration, some of the services that it provides do have. These are provided by the ds-init, ds-setup and ds-config-* packages. Here is a list of the runtime configuration-related files provided:
|
File
|
Description
|
|
/etc/group
|
Sample group file
|
|
/etc/hostname
|
Sample hostname
|
|
/etc/inittab
|
The processes to run at startup
|
|
/etc/network/interfaces
|
List of networking interfaces that can be used as arguments to ifup or ifdown. (See Summary.)
|
|
/etc/passwd
|
Sample password file. By default this contains only the user root, and has no password set.
|
|
/etc/resolv.conf
|
A symbolic link to /var/etc/resolv.conf so that the DNS information is stored in a RAM filesystem. If the system is not using DHCP to obtain this, then the link should be replaced with an actual file.
|
Command Line Options
See http://www.busybox.net/downloads/BusyBox.html for a complete set of command line options for every tool provided by BusyBox.
Building the Package
No special steps are needed, other than editing the configuration files.
Follow standard instructions for building userspace packages in the Devicescape Developer Guide topic on "Building the Packages", see subtopic: "Building a Userspace Package from a Source RPM"
Licensing
GPL2 (GNU General Public License, v.2)
See see http://www.busybox.net/license.html for information on complying with the Busybox license.
Related Packages
Required
ds-init ds-setup, ds-config-*, uClibc packages as described in Quick View of All Packages
Suggested
ds-init-httpd, ds-init-telnetd packages as described in Quick View of All Packages
