NAME
BusyBox - The Swiss Army Knife of Embedded Linux
SYNTAX
busybox <applet> []  # or
<applet> []          # if symlinked
DESCRIPTION
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 modu
lar 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. Then run 'make' to compile BusyBox using your configuration.
After the compile has finished, you should use 'make install' to install BusyBox. This will install the 'bin/ busybox' binary, in the target directory specified by CONFIG_PREFIX. CONFIG_PREFIX can be set when configuring BusyBox, or you can specify an alternative location at install time (i.e., with a command line like
'make CONFIG_PREFIX=/tmp/foo install'). If you enabled any applet installation scheme (either as symlinks
or hardlinks), these will also be installed in the location pointed to by CONFIG_PREFIX.
USAGE
BusyBox is a multi-call binary. A multi-call binary is an executable program that performs the same job as more than one utility program. That means there is just a single BusyBox binary, but that single binary acts like a large number of utilities. This allows BusyBox to be smaller since all the built-in utility programs (we call them applets) can share code for many common operations.
You can also invoke BusyBox by issuing a command as an argument on the command line. For example, entering
/bin/busybox ls
will also cause BusyBox to behave as 'ls'.
Of course, adding '/bin/busybox' into every command would be painful. So most people will invoke BusyBox using links to the BusyBox binary.
For example, entering
ln -s /bin/busybox ls
./ls
will cause BusyBox to behave as 'ls' (if the 'ls' command has been compiled into BusyBox). Generally speaking, you should never need to make all these links yourself, as the BusyBox build system will do this for you when you run the 'make install' command.
If you invoke BusyBox with no arguments, it will provide you with a list of the applets that have been compiled into your BusyBox binary.
COMMON OPTIONS
Most BusyBox applets support the --help argument to provide a terse runtime description of their behavior. If the CONFIG_FEATURE_VERBOSE_USAGE option has been enabled, more detailed usage information will also be available.
COMMANDS
Currently available applets include:
[, [[, acpid, addgroup, adduser, adjtimex, ar, arp, arping, ash,
awk, basename, beep, blkid, brctl, bunzip2, bzcat, bzip2, cal, cat,
catv, chat, chattr, chgrp, chmod, chown, chpasswd, chpst, chroot,
chrt, chvt, cksum, clear, cmp, comm, cp, cpio, crond, crontab,
cryptpw, cut, date, dc, dd, deallocvt, delgroup, deluser, depmod,
devmem, df, dhcprelay, diff, dirname, dmesg, dnsd, dnsdomainname,
dos2unix, dpkg, du, dumpkmap, dumpleases, echo, ed, egrep, eject,
env, envdir, envuidgid, expand, expr, fakeidentd, false, fbset,
fbsplash, fdflush, fdformat, fdisk, fgrep, find, findfs, flash_lock,
flash_unlock, fold, free, freeramdisk, fsck, fsck.minix, fsync,
ftpd, ftpget, ftpput, fuser, getopt, getty, grep, gunzip, gzip, hd,
hdparm, head, hexdump, hostid, hostname, httpd, hush, hwclock, id,
ifconfig, ifdown, ifenslave, ifplugd, ifup, inetd, init, inotifyd,
insmod, install, ionice, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink,
iproute, iprule, iptunnel, kbd_mode, kill, killall, killall5, klogd,
last, length, less, linux32, linux64, linuxrc, ln, loadfont,
loadkmap, logger, login, logname, logread, losetup, lpd, lpq, lpr,
ls, lsattr, lsmod, lzmacat, lzop, lzopcat, makemime, man, md5sum,
mdev, mesg, microcom, mkdir, mkdosfs, mkfifo, mkfs.minix, mkfs.vfat,
mknod, mkpasswd, mkswap, mktemp, modprobe, more, mount, mountpoint,
mt, mv, nameif, nc, netstat, nice, nmeter, nohup, nslookup, od,
openvt, passwd, patch, pgrep, pidof, ping, ping6, pipe_progress,
pivot_root, pkill, popmaildir, printenv, printf, ps, pscan, pwd,
raidautorun, rdate, rdev, readlink, readprofile, realpath,
reformime, renice, reset, resize, rm, rmdir, rmmod, route, rpm,
rpm2cpio, rtcwake, run-parts, runlevel, runsv, runsvdir, rx, script,        scriptreplay, sed, sendmail, seq, setarch, setconsole, setfont,
setkeycodes, setlogcons, setsid, setuidgid, sh, sha1sum, sha256sum,        sha512sum, showkey, slattach, sleep, softlimit, sort, split,
start-stop-daemon, stat, strings, stty, su, sulogin, sum, sv,
svlogd, swapoff, swapon, switch_root, sync, sysctl, syslogd, tac,
tail, tar, taskset, tcpsvd, tee, telnet, telnetd, test, tftp, tftpd,        time, timeout, top, touch, tr, traceroute, true, tty, ttysize,
udhcpc, udhcpd, udpsvd, umount, uname, uncompress, unexpand, uniq,
unix2dos, unlzma, unlzop, unzip, uptime, usleep, uudecode, uuencode,        vconfig, vi, vlock, volname, watch, watchdog, wc, wget, which, who,        whoami, xargs, yes, zcat, zcip
COMMAND DESCRIPTIONS
acpid
acpid [-d] [-c CONFDIR] [-l LOGFILE] [-e PROC_EVENT_FILE] [EVDEV_]
Listen to ACPI events and spawn specific helpers on event arrival
Options:
-d      Do not daemonize and log to stderr
-c DIR  Config directory [/etc/acpi]
-e FILE /proc event file [/proc/acpi/event]sort of army
-l FILE Log file [/var/log/acpid]
Accept and ignore compatibility options -g -m -s -S -v
addgroup
addgroup [-g GID] [user_name] group_name
Add a group or add a user to a group
Options:
-g GID  Group id
-S      Create a system group
adduser
adduser [OPTIONS] user_name
Add a user
-h DIR          Home directory
-g GECOS        GECOS field
-s SHELL        Login shell
-G GRP          Add user to existing group
-
S              Create a system user
-D              Do not assign a password
-H              Do not create home directory
-u UID          User id
adjtimex
adjtimex [-q] [-o offset] [-f frequency] [-p timeconstant] [-t tick]
Read and optionally set system timebase parameters. See adjtimex(2).
Options:
-q              Quiet
-o offset      Time offset, microseconds
-f frequency    Frequency adjust, integer kernel units (65536 is 1ppm)                        (positive values make clock run faster)
-t tick        Microseconds per tick, usually 10000
-p timeconstant
ar
ar [-o] [-v] [-p] [-t] [-x] ARCHIVE FILES
Extract or list FILES from an ar archive
Options:
-o      Preserve original dates
-p      Extract to stdout
-t      List
-x      Extract
-v      Verbose
arp
arp
[-
vn] [-H type] [-i if] -a [hostname]
[-v] [-i if] -d hostname [pub]
[-v] [-H type] [-i if] -s hostname hw_addr [temp]
[-v] [-H type] [-i if] -s hostname hw_addr [netmask nm]
pub
[-v] [-H type] [-i if] -Ds hostname ifa [netmask nm] pub
Manipulate ARP cache
-a              Display (all) hosts
-
s              Set new ARP entry
-d              Delete a specified entry
-v              Verbose
-n              Don't resolve names
-i IF          Network interface
-D              Read <hwaddr> from given device
-A, -p AF      Protocol family
-H HWTYPE      Hardware address type
arping
arping [-fqbDUA] [-c count] [-w timeout] [-I dev] [-s sender] target
Send ARP requests/replies
Options:
-f              Quit on first ARP reply
-q              Quiet
-b              Keep broadcasting, don't go unicast
-D              Duplicated address detection mode
-U              Unsolicited ARP mode, update your neighbors        -A              ARP answer mode, update your neighbors
-c N            Stop after sending N ARP requests
-w timeout      Time to wait for ARP reply, in seconds
-I dev          Interface to use (default eth0)
-s sender      Sender IP address
target          Target IP address
awk
awk [OPTIONS] [AWK_PROGRAM] [FILE]...
Options:
-v VAR=VAL      Set variable
-F SEP          Use SEP as field separator
-f FILE        Read program from file
basename
basename FILE [SUFFIX]
Strip directory path and .SUFFIX from FILE
beep
beep -f freq -l length -d delay -r repetitions -n
Options:

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