NAME
    BusyBox - The Swiss Army Knife of Embedded Linux

SYNTAX
     busybox <applet> [arguments...]  # or

     <applet> [arguments...]          # 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 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.
    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:

            [, [[, arp, arping, ash, bash, cat, chgrp, chmod, chown, chroot, cp,
            cut, date, dd, df, dmesg, du, echo, egrep, env, fdisk, fgrep, find,
            flash_eraseall, free, fsync, getty, grep, halt, head, hush, hwclock,
            ifconfig, ifenslave, inetd, init, insmod, ip, ipaddr, iplink,
            iproute, iprule, iptunnel, kill, killall, killall5, less, linuxrc,
            ln, login, ls, lsmod, mkdir, mknod, modinfo, more, mount, mv,
            netstat, nice, nslookup, ping, ping6, pkill, poweroff, printenv, ps,
            pwd, reboot, rm, rmdir, rmmod, route, sed, seq, sh, stat, sync,
            tail, tcpsvd, telnet, telnetd, test, tftp, tftpd, top, touch,
            udpsvd, umount, uname, unzip, vi, who, whoami

COMMAND DESCRIPTIONS
    arp arp [-vn] [-H HWTYPE] [-i IF] -a [HOSTNAME] [-v] [-i IF] -d HOSTNAME
        [pub] [-v] [-H HWTYPE] [-i IF] -s HOSTNAME HWADDR [temp] [-v] [-H
        HWTYPE] [-i IF] -s HOSTNAME HWADDR [netmask MASK] pub [-v] [-H
        HWTYPE] [-i IF] -Ds HOSTNAME IFACE [netmask MASK] pub

        Manipulate ARP cache

        Options:

                -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 CNT] [-w TIMEOUT] [-I IFACE] [-s SRC_IP] DST_IP

        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, seconds
                -I IFACE        Interface to use (default eth0)
                -s SRC_IP       Sender IP address
                DST_IP          Target IP address

    cat cat [FILE]...

        Concatenate FILEs and print them to stdout

    chgrp
        chgrp [-RhLHPcvf]... GROUP FILE...

        Change the group membership of each FILE to GROUP

        Options:

                -R      Recurse
                -h      Affect symlinks instead of symlink targets
                -L      Traverse all symlinks to directories
                -H      Traverse symlinks on command line only
                -P      Don't traverse symlinks (default)
                -c      List changed files
                -v      Verbose
                -f      Hide errors

    chmod
        chmod [-Rcvf] MODE[,MODE]... FILE...

        Each MODE is one or more of the letters ugoa, one of the symbols +-=
        and one or more of the letters rwxst

        Options:

                -R      Recurse
                -c      List changed files
                -v      List all files
                -f      Hide errors

    chown
        chown [-RhLHPcvf]... OWNER[<.|:>[GROUP]] FILE...

        Change the owner and/or group of each FILE to OWNER and/or GROUP

        Options:

                -R      Recurse
                -h      Affect symlinks instead of symlink targets
                -L      Traverse all symlinks to directories
                -H      Traverse symlinks on command line only
                -P      Don't traverse symlinks (default)
                -c      List changed files
                -v      List all files
                -f      Hide errors

    chroot
        chroot NEWROOT [PROG ARGS]

        Run PROG with root directory set to NEWROOT

    cp  cp [OPTIONS] SOURCE DEST

        Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY

        Options:

                -a      Same as -dpR
                -R,-r   Recurse
                -d,-P   Preserve symlinks (default if -R)
                -L      Follow all symlinks
                -H      Follow symlinks on command line
                -p      Preserve file attributes if possible
                -f      Overwrite
                -i      Prompt before overwrite
                -l,-s   Create (sym)links

    cut cut [OPTIONS] [FILE]...

        Print selected fields from each input FILE to stdout

        Options:

                -b LIST Output only bytes from LIST
                -c LIST Output only characters from LIST
                -d CHAR Use CHAR instead of tab as the field delimiter
                -s      Output only the lines containing delimiter
                -f N    Print only these fields
                -n      Ignored

    date
        date [OPTIONS] [+FMT] [TIME]

        Display time (using +FMT), or set time

        Options:

                [-s,--set] TIME Set time to TIME
                -u,--utc        Work in UTC (don't convert to local time)
                -R,--rfc-2822   Output RFC-2822 compliant date string
                -I[SPEC]        Output ISO-8601 compliant date string
                                SPEC='date' (default) for date only,
                                'hours', 'minutes', or 'seconds' for date and
                                time to the indicated precision
                -r,--reference FILE     Display last modification time of FILE
                -d,--date TIME  Display TIME, not 'now'
                -D FMT          Use FMT for -d TIME conversion

        Recognized TIME formats:

                hh:mm[:ss]
                [YYYY.]MM.DD-hh:mm[:ss]
                YYYY-MM-DD hh:mm[:ss]
                [[[[[YY]YY]MM]DD]hh]mm[.ss]

    dd  dd [if=FILE] [of=FILE] [bs=N] [count=N] [skip=N] [seek=N]

        Copy a file with converting and formatting

        Options:

                if=FILE         Read from FILE instead of stdin
                of=FILE         Write to FILE instead of stdout
                bs=N            Read and write N bytes at a time
                count=N         Copy only N input blocks
                skip=N          Skip N input blocks
                seek=N          Skip N output blocks

        Numbers may be suffixed by c (x1), w (x2), b (x512), kD (x1000), k
        (x1024), MD (x1000000), M (x1048576), GD (x1000000000) or G
        (x1073741824)

    df  df [-Pkmh] [FILESYSTEM]...

        Print filesystem usage statistics

        Options:

                -P      POSIX output format
                -k      1024-byte blocks (default)
                -m      1M-byte blocks
                -h      Human readable (e.g. 1K 243M 2G)

    dmesg
        dmesg [-c] [-n LEVEL] [-s SIZE]

        Print or control the kernel ring buffer

        Options:

                -c              Clear ring buffer after printing
                -n LEVEL        Set console logging level
                -s SIZE         Buffer size

    du  du [-aHLdclsxhmk] [FILE]...

        Summarize disk space used for each FILE and/or directory. Disk space
        is printed in units of 1024 bytes.

        Options:

                -a      Show file sizes too
                -L      Follow all symlinks
                -H      Follow symlinks on command line
                -d N    Limit output to directories (and files with -a) of depth < N
                -c      Show grand total
                -l      Count sizes many times if hard linked
                -s      Display only a total for each argument
                -x      Skip directories on different filesystems
                -h      Sizes in human readable format (e.g., 1K 243M 2G )
                -m      Sizes in megabytes
                -k      Sizes in kilobytes (default)

    echo
        echo [ARG]...

        Print the specified ARGs to stdout

    env env [-iu] [-] [name=value]... [PROG ARGS]

        Print the current environment or run PROG after setting up the
        specified environment

        Options:

                -, -i   Start with an empty environment
                -u      Remove variable from the environment

    fdisk
        fdisk [-ul] [-C CYLINDERS] [-H HEADS] [-S SECTORS] [-b SSZ] DISK

        Change partition table

        Options:

                -u              Start and End are in sectors (instead of cylinders)
                -l              Show partition table for each DISK, then exit
                -b 2048         (for certain MO disks) use 2048-byte sectors
                -C CYLINDERS    Set number of cylinders/heads/sectors
                -H HEADS
                -S SECTORS

    find
        find [PATH]... [EXPRESSION]

        Search for files. The default PATH is the current directory, default
        EXPRESSION is '-print'

        EXPRESSION may consist of:

                -follow         Follow symlinks
                -xdev           Don't descend directories on other filesystems
                -maxdepth N     Descend at most N levels. -maxdepth 0 applies
                                tests/actions to command line arguments only
                -mindepth N     Don't act on first N levels
                -name PATTERN   File name (w/o directory name) matches PATTERN
                -iname PATTERN  Case insensitive -name
                -path PATTERN   Path matches PATTERN
                -regex PATTERN  Path matches regex PATTERN
                -type X         File type is X (X is one of: f,d,l,b,c,...)
                -perm NNN       Permissions match any of (+NNN), all of (-NNN),
                                or exactly NNN
                -mtime DAYS     Modified time is greater than (+N), less than (-N),
                                or exactly N days
                -mmin MINS      Modified time is greater than (+N), less than (-N),
                                or exactly N minutes
                -newer FILE     Modified time is more recent than FILE's
                -inum N         File has inode number N
                -user NAME      File is owned by user NAME (numeric user ID allowed)
                -group NAME     File belongs to group NAME (numeric group ID allowed)
                -depth          Process directory name after traversing it
                -size N[bck]    File size is N (c:bytes,k:kbytes,b:512 bytes(def.))
                                +/-N: file size is bigger/smaller than N
                -links N        Number of links is greater than (+N), less than (-N),
                                or exactly N
                -print          Print (default and assumed)
                -print0         Delimit output with null characters rather than
                                newlines
                -exec CMD ARG ; Run CMD with all instances of {} replaced by the
                                matching files
                -prune          Stop traversing current subtree
                -delete         Delete files, turns on -depth option
                (EXPR)          Group an expression

    flash_eraseall
        flash_eraseall [-jq] MTD_DEVICE

        Erase an MTD device

        Options:

                -j      Format the device for jffs2
                -q      Don't display progress messages

    free
        free [-b/k/m/g]

        Display the amount of free and used system memory

    fsync
        fsync [-d] FILE...

        Write files' buffered blocks to disk

        Options:

                -d      Avoid syncing metadata

    getty
        getty [OPTIONS] BAUD_RATE TTY [TERMTYPE]

        Open a tty, prompt for a login name, then invoke /bin/login

        Options:

                -h              Enable hardware (RTS/CTS) flow control
                -i              Don't display /etc/issue before running login
                -L              Local line, don't do carrier detect
                -m              Get baud rate from modem's CONNECT status message
                -w              Wait for a CR or LF before sending /etc/issue
                -n              Don't prompt the user for a login name
                -f ISSUE_FILE   Display ISSUE_FILE instead of /etc/issue
                -l LOGIN        Invoke LOGIN instead of /bin/login
                -t SEC          Terminate after SEC if no username is read
                -I INITSTR      Send INITSTR before anything else
                -H HOST         Log HOST into the utmp file as the hostname

    grep
        grep [-HhnlLoqvsriwFE] [-m N] [-A/B/C N] PATTERN/-e PATTERN.../-f
        FILE [FILE]...

        Search for PATTERN in FILEs (or stdin)

        Options:

                -H      Add 'filename:' prefix
                -h      Do not add 'filename:' prefix
                -n      Add 'line_no:' prefix
                -l      Show only names of files that match
                -L      Show only names of files that don't match
                -c      Show only count of matching lines
                -o      Show only the matching part of line
                -q      Quiet. Return 0 if PATTERN is found, 1 otherwise
                -v      Select non-matching lines
                -s      Suppress open and read errors
                -r      Recurse
                -i      Ignore case
                -w      Match whole words only
                -F      PATTERN is a literal (not regexp)
                -E      PATTERN is an extended regexp
                -m N    Match up to N times per file
                -A N    Print N lines of trailing context
                -B N    Print N lines of leading context
                -C N    Same as '-A N -B N'
                -e PTRN Pattern to match
                -f FILE Read pattern from file

    halt
        halt [-d DELAY] [-n] [-f] [-w]

        Halt the system

        Options:

                -d SEC  Delay interval
                -n      Do not sync
                -f      Force (don't go through init)
                -w      Only write a wtmp record

    head
        head [OPTIONS] [FILE]...

        Print first 10 lines of each FILE (or stdin) to stdout. With more
        than one FILE, precede each with a filename header.

        Options:

                -n N[kbm]       Print first N lines
                -c N[kbm]       Print first N bytes
                -q              Never print headers
                -v              Always print headers

        N may be suffixed by k (x1024), b (x512), or m (x1024^2).

    hwclock
        hwclock [-r|--show] [-s|--hctosys] [-w|--systohc] [-l|--localtime]
        [-u|--utc] [-f FILE]

        Query and set hardware clock (RTC)

        Options:

                -r      Show hardware clock time
                -s      Set system time from hardware clock
                -w      Set hardware clock to system time
                -u      Hardware clock is in UTC
                -l      Hardware clock is in local time
                -f FILE Use specified device (e.g. /dev/rtc2)

    ifconfig
        ifconfig [-a] interface [address]

        Configure a network interface

        Options:

                [add ADDRESS[/PREFIXLEN]]
                [del ADDRESS[/PREFIXLEN]]
                [[-]broadcast [ADDRESS]] [[-]pointopoint [ADDRESS]]
                [netmask ADDRESS] [dstaddr ADDRESS]
                [outfill NN] [keepalive NN]
                [hw ether|infiniband ADDRESS] [metric NN] [mtu NN]
                [[-]trailers] [[-]arp] [[-]allmulti]
                [multicast] [[-]promisc] [txqueuelen NN] [[-]dynamic]
                [mem_start NN] [io_addr NN] [irq NN]
                [up|down] ...

    ifenslave
        ifenslave [-cdf] MASTER_IFACE SLAVE_IFACE...

        Configure network interfaces for parallel routing

        Options:

                -c,--change-active      Change active slave
                -d,--detach             Remove slave interface from bonding device
                -f,--force              Force, even if interface is not Ethernet

    inetd
        inetd [-fe] [-q N] [-R N] [CONFFILE]

        Listen for network connections and launch programs

        Options:

                -f      Run in foreground
                -e      Log to stderr
                -q N    Socket listen queue (default: 128)
                -R N    Pause services after N connects/min
                        (default: 0 - disabled)

    init
        init

        Init is the parent of all processes

    insmod
        insmod FILE [SYMBOL=VALUE]...

        Load the specified kernel modules into the kernel

    ip  ip [OPTIONS] {address | route | link | tunnel | rule} {COMMAND}

        ip [OPTIONS] OBJECT {COMMAND} where OBJECT := {address | route |
        link | tunnel | rule} OPTIONS := { -f[amily] { inet | inet6 | link }
        | -o[neline] }

    ipaddr
        ipaddr { {add|del} IFADDR dev STRING | {show|flush} [dev STRING] [to
        PREFIX] }

        ipaddr {add|delete} IFADDR dev STRING ipaddr {show|flush} [dev
        STRING] [scope SCOPE-ID] [to PREFIX] [label PATTERN] IFADDR :=
        PREFIX | ADDR peer PREFIX [broadcast ADDR] [anycast ADDR] [label
        STRING] [scope SCOPE-ID] SCOPE-ID := [host | link | global | NUMBER]

    iplink
        iplink { set DEVICE { up | down | arp { on | off } | show [DEVICE] }

        iplink set DEVICE { up | down | arp | multicast { on | off } |
        dynamic { on | off } | mtu MTU } iplink show [DEVICE]

    iproute
        iproute { list | flush | { add | del | change | append | replace |
        monitor } ROUTE }

        iproute { list | flush } SELECTOR iproute get ADDRESS [from ADDRESS
        iif STRING] [oif STRING] [tos TOS] iproute { add | del | change |
        append | replace | monitor } ROUTE SELECTOR := [root PREFIX] [match
        PREFIX] [proto RTPROTO] ROUTE := [TYPE] PREFIX [tos TOS] [proto
        RTPROTO] [metric METRIC]

    iprule
        iprule {[list | add | del] RULE}

        iprule [list | add | del] SELECTOR ACTION SELECTOR := [from PREFIX]
        [to PREFIX] [tos TOS] [fwmark FWMARK] [dev STRING] [pref NUMBER]
        ACTION := [table TABLE_ID] [nat ADDRESS] [prohibit | reject |
        unreachable] [realms [SRCREALM/]DSTREALM] TABLE_ID := [local | main
        | default | NUMBER]

    iptunnel
        iptunnel { add | change | del | show } [NAME] [mode { ipip | gre |
        sit }] [remote ADDR] [local ADDR] [ttl TTL]

        iptunnel { add | change | del | show } [NAME] [mode { ipip | gre |
        sit }] [remote ADDR] [local ADDR] [[i|o]seq] [[i|o]key KEY]
        [[i|o]csum] [ttl TTL] [tos TOS] [[no]pmtudisc] [dev PHYS_DEV]

    kill
        kill [-l] [-SIG] PID...

        Send a signal (default: TERM) to given PIDs

        Options:

                -l      List all signal names and numbers

    killall
        killall [-l] [-q] [-SIG] PROCESS_NAME...

        Send a signal (default: TERM) to given processes

        Options:

                -l      List all signal names and numbers
                -q      Don't complain if no processes were killed

    killall5
        killall5 [-l] [-SIG] [-o PID]...

        Send a signal (default: TERM) to all processes outside current
        session

        Options:

                -l      List all signal names and numbers
                -o PID  Don't signal this PID

    less
        less [-EMNmh~I?] [FILE]...

        View FILE (or stdin) one screenful at a time

        Options:

                -E      Quit once the end of a file is reached
                -M,-m   Display status line with line numbers
                        and percentage through the file
                -N      Prefix line number to each line
                -I      Ignore case in all searches
                -~      Suppress ~s displayed past the end of the file

    ln  ln [OPTIONS] TARGET... LINK|DIR

        Create a link LINK or DIR/TARGET to the specified TARGET(s)

        Options:

                -s      Make symlinks instead of hardlinks
                -f      Remove existing destinations
                -n      Don't dereference symlinks - treat like normal file
                -b      Make a backup of the target (if exists) before link operation
                -S suf  Use suffix instead of ~ when making backup files

    login
        login [-p] [-h HOST] [[-f] USER]

        Begin a new session on the system

        Options:

                -f      Don't authenticate (user already authenticated)
                -h      Name of the remote host
                -p      Preserve environment

    ls  ls [-1AacCdeilnLRrSsTtuvwxXhk] [FILE]...

        List directory contents

        Options:

                -1      List in a single column
                -A      Don't list . and ..
                -a      Don't hide entries starting with .
                -C      List by columns
                -c      With -l: sort by ctime
                --color[={always,never,auto}]   Control coloring
                -d      List directory entries instead of contents
                -e      List full date and time
                -i      List inode numbers
                -l      Long listing format
                -n      List numeric UIDs and GIDs instead of names
                -L      List entries pointed to by symlinks
                -R      Recurse
                -r      Sort in reverse order
                -S      Sort by file size
                -s      List the size of each file, in blocks
                -T N    Assume tabstop every N columns
                -t      With -l: sort by modification time
                -u      With -l: sort by access time
                -v      Sort by version
                -w N    Assume the terminal is N columns wide
                -x      List by lines
                -X      Sort by extension
                -h      List sizes in human readable format (1K 243M 2G)

    lsmod
        lsmod

        List the currently loaded kernel modules

    mkdir
        mkdir [OPTIONS] DIRECTORY...

        Create DIRECTORY

        Options:

                -m MODE Mode
                -p      No error if exists; make parent directories as needed

    mknod
        mknod [-m MODE] NAME TYPE MAJOR MINOR

        Create a special file (block, character, or pipe)

        Options:

                -m MODE Creation mode (default a=rw)
        TYPE:
                b       Block device
                c or u  Character device
                p       Named pipe (MAJOR and MINOR are ignored)

    modinfo
        modinfo [-adlp0] [-F keyword] MODULE

        Options:

                -a              Shortcut for '-F author'
                -d              Shortcut for '-F description'
                -l              Shortcut for '-F license'
                -p              Shortcut for '-F parm'
                -F keyword      Keyword to look for
                -0              Separate output with NULs

    more
        more [FILE]...

        View FILE (or stdin) one screenful at a time

    mount
        mount [OPTIONS] [-o OPTS] DEVICE NODE

        Mount a filesystem. Filesystem autodetection requires /proc.

        Options:

                -a              Mount all filesystems in fstab
                -f              Dry run
                -r              Read-only mount
                -w              Read-write mount (default)
                -t FSTYPE       Filesystem type
                -O OPT          Mount only filesystems with option OPT (-a only)
        -o OPT:
                [a]sync         Writes are [a]synchronous
                [no]atime       Disable/enable updates to inode access times
                [no]diratime    Disable/enable atime updates to directories
                [no]relatime    Disable/enable atime updates relative to modification time
                [no]dev         (Dis)allow use of special device files
                [no]exec        (Dis)allow use of executable files
                [no]suid        (Dis)allow set-user-id-root programs
                [r]shared       Convert [recursively] to a shared subtree
                [r]slave        Convert [recursively] to a slave subtree
                [r]private      Convert [recursively] to a private subtree
                [un]bindable    Make mount point [un]able to be bind mounted
                bind            Bind a file or directory to another location
                move            Relocate an existing mount point
                remount         Remount a mounted filesystem, changing flags
                ro/rw           Same as -r/-w

        There are filesystem-specific -o flags.

    mv  mv [-fin] SOURCE DEST or: mv [-fin] SOURCE... DIRECTORY

        Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY

        Options:

                -f      Don't prompt before overwriting
                -i      Interactive, prompt before overwrite
                -n      Don't overwrite an existing file

    netstat
        netstat [-ral] [-tuwx] [-enWp]

        Display networking information

        Options:

                -r      Routing table
                -a      All sockets
                -l      Listening sockets
                        Else: connected sockets
                -t      TCP sockets
                -u      UDP sockets
                -w      Raw sockets
                -x      Unix sockets
                        Else: all socket types
                -e      Other/more information
                -n      Don't resolve names
                -W      Wide display
                -p      Show PID/program name for sockets

    nice
        nice [-n ADJUST] [PROG ARGS]

        Change scheduling priority, run PROG

        Options:

                -n ADJUST       Adjust priority by ADJUST

    nslookup
        nslookup [HOST] [SERVER]

        Query the nameserver for the IP address of the given HOST optionally
        using a specified DNS server

    ping
        ping [OPTIONS] HOST

        Send ICMP ECHO_REQUEST packets to network hosts

        Options:

                -4,-6           Force IP or IPv6 name resolution
                -c CNT          Send only CNT pings
                -s SIZE         Send SIZE data bytes in packets (default:56)
                -I IFACE/IP     Use interface or IP address as source
                -W SEC          Seconds to wait for the first response (default:10)
                                (after all -c CNT packets are sent)
                -w SEC          Seconds until ping exits (default:infinite)
                                (can exit earlier with -c CNT)
                -q              Quiet, only displays output at start
                                and when finished

    ping6
        ping6 [OPTIONS] HOST

        Send ICMP ECHO_REQUEST packets to network hosts

        Options:

                -c CNT          Send only CNT pings
                -s SIZE         Send SIZE data bytes in packets (default:56)
                -I IFACE/IP     Use interface or IP address as source
                -q              Quiet, only displays output at start
                                and when finished

    pkill
        pkill [-l|-SIGNAL] [-fnovx] [-s SID|-P PPID|PATTERN]

        Send a signal to process(es) selected by regex PATTERN

        Options:

                -l      List all signals
                -f      Match against entire command line
                -n      Signal the newest process only
                -o      Signal the oldest process only
                -v      Negate the match
                -x      Match whole name (not substring)
                -s      Match session ID (0 for current)
                -P      Match parent process ID

    poweroff
        poweroff [-d DELAY] [-n] [-f]

        Halt and shut off power

        Options:

                -d SEC  Delay interval
                -n      Do not sync
                -f      Force (don't go through init)

    printenv
        printenv [VARIABLE]...

        Print environment VARIABLEs. If no VARIABLE specified, print all.

    ps  ps [-o COL1,COL2=HEADER] [-T]

        Show list of processes

        Options:

                -o COL1,COL2=HEADER     Select columns for display
                -T                      Show threads

    pwd pwd

        Print the full filename of the current working directory

    reboot
        reboot [-d DELAY] [-n] [-f]

        Reboot the system

        Options:

                -d SEC  Delay interval
                -n      Do not sync
                -f      Force (don't go through init)

    rm  rm [-irf] FILE...

        Remove (unlink) FILEs

        Options:

                -i      Always prompt before removing
                -f      Never prompt
                -R,-r   Recurse

    rmdir
        rmdir [OPTIONS] DIRECTORY...

        Remove DIRECTORY if it is empty

        Options:

                -p|--parents    Include parents
                --ignore-fail-on-non-empty

    rmmod
        rmmod [-wfa] [MODULE]...

        Unload kernel modules

        Options:

                -w      Wait until the module is no longer used
                -f      Force unload
                -a      Remove all unused modules (recursively)

    route
        route [{add|del|delete}]

        Edit kernel routing tables

        Options:

                -n      Don't resolve names
                -e      Display other/more information
                -A inet{6}      Select address family

    sed sed [-efinr] SED_CMD [FILE]...

        Options:

                -e CMD  Add CMD to sed commands to be executed
                -f FILE Add FILE contents to sed commands to be executed
                -i      Edit files in-place (else sends result to stdout)
                -n      Suppress automatic printing of pattern space
                -r      Use extended regex syntax

        If no -e or -f, the first non-option argument is the sed command
        string. Remaining arguments are input files (stdin if none).

    seq seq [-w] [-s SEP] [FIRST [INC]] LAST

        Print numbers from FIRST to LAST, in steps of INC. FIRST, INC
        default to 1.

        Options:

                -w      Pad to last with leading zeros
                -s SEP  String separator

    stat
        stat [OPTIONS] FILE...

        Display file (default) or filesystem status

        Options:

                -f      Display filesystem status
                -L      Follow links
                -t      Display info in terse form

    sync
        sync

        Write all buffered blocks to disk

    tail
        tail [OPTIONS] [FILE]...

        Print last 10 lines of each FILE (or stdin) to stdout. With more
        than one FILE, precede each with a filename header.

        Options:

                -f              Print data as file grows
                -s SECONDS      Wait SECONDS between reads with -f
                -n N[kbm]       Print last N lines
                -c N[kbm]       Print last N bytes
                -q              Never print headers
                -v              Always print headers

        N may be suffixed by k (x1024), b (x512), or m (x1024^2). If N
        starts with a '+', output begins with the Nth item from the start of
        each file, not from the end.

    tcpsvd
        tcpsvd [-hEv] [-c N] [-C N[:MSG]] [-b N] [-u USER] [-l NAME] IP PORT
        PROG

        Create TCP socket, bind to IP:PORT and listen for incoming
        connection. Run PROG for each connection.

                IP              IP to listen on. '0' = all
                PORT            Port to listen on
                PROG ARGS       Program to run
                -l NAME         Local hostname (else looks up local hostname in DNS)
                -u USER[:GRP]   Change to user/group after bind
                -c N            Handle up to N connections simultaneously
                -b N            Allow a backlog of approximately N TCP SYNs
                -C N[:MSG]      Allow only up to N connections from the same IP.
                                New connections from this IP address are closed
                                immediately. MSG is written to the peer before close
                -h              Look up peer's hostname
                -E              Don't set up environment variables
                -v              Verbose

    telnet
        telnet [-a] [-l USER] HOST [PORT]

        Connect to telnet server

        Options:

                -a      Automatic login with $USER variable
                -l USER Automatic login as USER

    telnetd
        telnetd [OPTIONS]

        Handle incoming telnet connections

        Options:

                -l LOGIN        Exec LOGIN on connect
                -f ISSUE_FILE   Display ISSUE_FILE instead of /etc/issue
                -K              Close connection as soon as login exits
                                (normally wait until all programs close slave pty)
                -p PORT         Port to listen on
                -b ADDR[:PORT]  Address to bind to
                -F              Run in foreground
                -i              Inetd mode
                -w SEC          Inetd 'wait' mode, linger time SEC
                -S              Log to syslog (implied by -i or without -F and -w)

    test
        test EXPRESSION ]

        Check file types, compare values etc. Return a 0/1 exit code
        depending on logical value of EXPRESSION

    tftp
        tftp [OPTIONS] HOST [PORT]

        Transfer a file from/to tftp server

        Options:

                -l FILE Local FILE
                -r FILE Remote FILE
                -g      Get file
                -p      Put file

    tftpd
        tftpd [-cr] [-u USER] [DIR]

        Transfer a file on tftp client's request

        tftpd should be used as an inetd service. tftpd's line for
        inetd.conf: 69 dgram udp nowait root tftpd tftpd /files/to/serve It
        also can be ran from udpsvd:

                udpsvd -vE 0.0.0.0 69 tftpd /files/to/serve

        Options:

                -r      Prohibit upload
                -c      Allow file creation via upload
                -u      Access files as USER

    top top [-b] [-nCOUNT] [-dSECONDS] [-m]

        Provide a view of process activity in real time. Read the status of
        all processes from /proc each SECONDS and display a screenful of
        them.

    touch
        touch [-c] [-d DATE] [-r FILE] FILE [FILE]...

        Update the last-modified date on the given FILE[s]

        Options:

                -c      Don't create files
                -d DT   Date/time to use
                -r FILE Use FILE's date/time

    udpsvd
        udpsvd [-hEv] [-c N] [-u USER] [-l NAME] IP PORT PROG

        Create UDP socket, bind to IP:PORT and wait for incoming packets.
        Run PROG for each packet, redirecting all further packets with same
        peer ip:port to it.

                IP              IP to listen on. '0' = all
                PORT            Port to listen on
                PROG ARGS       Program to run
                -l NAME         Local hostname (else looks up local hostname in DNS)
                -u USER[:GRP]   Change to user/group after bind
                -c N            Handle up to N connections simultaneously
                -h              Look up peer's hostname
                -E              Don't set up environment variables
                -v              Verbose

    umount
        umount [OPTIONS] FILESYSTEM|DIRECTORY

        Unmount file systems

        Options:

                -a      Unmount all file systems
                -r      Try to remount devices as read-only if mount is busy
                -l      Lazy umount (detach filesystem)
                -f      Force umount (i.e., unreachable NFS server)

    uname
        uname [-amnrspv]

        Print system information

        Options:

                -a      Print all
                -m      The machine (hardware) type
                -n      Hostname
                -r      OS release
                -s      OS name (default)
                -p      Processor type
                -v      OS version

    unzip
        unzip [-opts[modifiers]] FILE[.zip] [LIST] [-x XLIST] [-d DIR]

        Extract files from ZIP archives

        Options:

                -l      List archive contents (with -q for short form)
                -n      Never overwrite files (default)
                -o      Overwrite
                -p      Send output to stdout
                -q      Quiet
                -x XLST Exclude these files
                -d DIR  Extract files into DIR

    vi  vi [OPTIONS] [FILE]...

        Edit FILE

        Options:

                -c      Initial command to run ($EXINIT also available)
                -R      Read-only
                -H      Short help regarding available features

    who who [-a]

        Show who is logged on

        Options:

                -a      Show all

    whoami
        whoami

        Print the user name associated with the current effective user id

LIBC NSS
    GNU Libc (glibc) uses the Name Service Switch (NSS) to configure the
    behavior of the C library for the local environment, and to configure
    how it reads system data, such as passwords and group information. This
    is implemented using an /etc/nsswitch.conf configuration file, and using
    one or more of the /lib/libnss_* libraries. BusyBox tries to avoid using
    any libc calls that make use of NSS. Some applets however, such as login
    and su, will use libc functions that require NSS.

    If you enable CONFIG_USE_BB_PWD_GRP, BusyBox will use internal functions
    to directly access the /etc/passwd, /etc/group, and /etc/shadow files
    without using NSS. This may allow you to run your system without the
    need for installing any of the NSS configuration files and libraries.

    When used with glibc, the BusyBox 'networking' applets will similarly
    require that you install at least some of the glibc NSS stuff (in
    particular, /etc/nsswitch.conf, /lib/libnss_dns*, /lib/libnss_files*,
    and /lib/libresolv*).

    Shameless Plug: As an alternative, one could use a C library such as
    uClibc. In addition to making your system significantly smaller, uClibc
    does not require the use of any NSS support files or libraries.

MAINTAINER
    Denis Vlasenko <vda.linux@googlemail.com>

AUTHORS
    The following people have contributed code to BusyBox whether they know
    it or not. If you have written code included in BusyBox, you should
    probably be listed here so you can obtain your bit of eternal glory. If
    you should be listed here, or the description of what you have done
    needs more detail, or is incorrect, please send in an update.

    Emanuele Aina <emanuele.aina@tiscali.it> run-parts

    Erik Andersen <andersen@codepoet.org>

        Tons of new stuff, major rewrite of most of the
        core apps, tons of new apps as noted in header files.
        Lots of tedious effort writing these boring docs that
        nobody is going to actually read.

    Laurence Anderson <l.d.anderson@warwick.ac.uk>

        rpm2cpio, unzip, get_header_cpio, read_gz interface, rpm

    Jeff Angielski <jeff@theptrgroup.com>

        ftpput, ftpget

    Edward Betts <edward@debian.org>

        expr, hostid, logname, whoami

    John Beppu <beppu@codepoet.org>

        du, nslookup, sort

    Brian Candler <B.Candler@pobox.com>

        tiny-ls(ls)

    Randolph Chung <tausq@debian.org>

        fbset, ping, hostname

    Dave Cinege <dcinege@psychosis.com>

        more(v2), makedevs, dutmp, modularization, auto links file,
        various fixes, Linux Router Project maintenance

    Jordan Crouse <jordan@cosmicpenguin.net>

        ipcalc

    Magnus Damm <damm@opensource.se>

        tftp client insmod powerpc support

    Larry Doolittle <ldoolitt@recycle.lbl.gov>

        pristine source directory compilation, lots of patches and fixes.

    Glenn Engel <glenne@engel.org>

        httpd

    Gennady Feldman <gfeldman@gena01.com>

        Sysklogd (single threaded syslogd, IPC Circular buffer support,
        logread), various fixes.

    Karl M. Hegbloom <karlheg@debian.org>

        cp_mv.c, the test suite, various fixes to utility.c, &c.

    Daniel Jacobowitz <dan@debian.org>

        mktemp.c

    Matt Kraai <kraai@alumni.cmu.edu>

        documentation, bugfixes, test suite

    Stephan Linz <linz@li-pro.net>

        ipcalc, Red Hat equivalence

    John Lombardo <john@deltanet.com>

        tr

    Glenn McGrath <bug1@iinet.net.au>

        Common unarchiving code and unarchiving applets, ifupdown, ftpgetput,
        nameif, sed, patch, fold, install, uudecode.
        Various bugfixes, review and apply numerous patches.

    Manuel Novoa III <mjn3@codepoet.org>

        cat, head, mkfifo, mknod, rmdir, sleep, tee, tty, uniq, usleep, wc, yes,
        mesg, vconfig, make_directory, parse_mode, dirname, mode_string,
        get_last_path_component, simplify_path, and a number trivial libbb routines

        also bug fixes, partial rewrites, and size optimizations in
        ash, basename, cal, cmp, cp, df, du, echo, env, ln, logname, md5sum, mkdir,
        mv, realpath, rm, sort, tail, touch, uname, watch, arith, human_readable,
        interface, dutmp, ifconfig, route

    Vladimir Oleynik <dzo@simtreas.ru>

        cmdedit; xargs(current), httpd(current);
        ports: ash, crond, fdisk, inetd, stty, traceroute, top;
        locale, various fixes
        and irreconcilable critic of everything not perfect.

    Bruce Perens <bruce@pixar.com>

        Original author of BusyBox in 1995, 1996. Some of his code can
        still be found hiding here and there...

    Tim Riker <Tim@Rikers.org>

        bug fixes, member of fan club

    Kent Robotti <robotti@metconnect.com>

        reset, tons and tons of bug reports and patches.

    Chip Rosenthal <chip@unicom.com>, <crosenth@covad.com>

        wget - Contributed by permission of Covad Communications

    Pavel Roskin <proski@gnu.org>

        Lots of bugs fixes and patches.

    Gyepi Sam <gyepi@praxis-sw.com>

        Remote logging feature for syslogd

    Linus Torvalds <torvalds@transmeta.com>

        mkswap, fsck.minix, mkfs.minix

    Mark Whitley <markw@codepoet.org>

        grep, sed, cut, xargs(previous),
        style-guide, new-applet-HOWTO, bug fixes, etc.

    Charles P. Wright <cpwright@villagenet.com>

        gzip, mini-netcat(nc)

    Enrique Zanardi <ezanardi@ull.es>

        tarcat (since removed), loadkmap, various fixes, Debian maintenance

    Tito Ragusa <farmatito@tiscali.it>

        devfsd and size optimizations in strings, openvt and deallocvt.

    Paul Fox <pgf@foxharp.boston.ma.us>

        vi editing mode for ash, various other patches/fixes

    Roberto A. Foglietta <me@roberto.foglietta.name>

        port: dnsd

    Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

        misc

    Mike Frysinger <vapier@gentoo.org>

        initial e2fsprogs, printenv, setarch, sum, misc

    Jie Zhang <jie.zhang@analog.com>

        fixed two bugs in msh and hush (exitcode of killed processes)

