user@dedicated:~# /bin/busybox
-bash: /bin/busybox: No such file or directory

user@slicehost:~# /bin/busybox
-bash: /bin/busybox: No such file or directory

user@linode:~# /bin/busybox 
-bash: /bin/busybox: No such file or directory

user@linode:~# apt-get install busybox
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  busybox
0 upgraded, 1 newly installed, 0 to remove and 36 not upgraded.
Need to get 335kB of archives.
After this operation, 586kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  busybox
Install these packages without verification [y/N]? yes
Get:1 http://ftp2.de.debian.org lenny/main busybox 1:1.10.2-2 [335kB]
Fetched 335kB in 1s (307kB/s)   
Selecting previously deselected package busybox.
(Reading database ... 18074 files and directories currently installed.)
Unpacking busybox (from .../busybox_1%3a1.10.2-2_amd64.deb) ...
Processing triggers for man-db ...
Setting up busybox (1:1.10.2-2) ...

user@linode:~# /bin/busybox
BusyBox v1.10.2 (Debian 1:1.10.2-2) multi-call binary
Copyright (C) 1998-2007 Erik Andersen, Rob Landley, Denys Vlasenko
and others. Licensed under GPLv2.
See source distribution for full notice.

Usage: busybox [function] [arguments]...
   or: function [arguments]...

        BusyBox is a multi-call binary that combines many common Unix
        utilities into a single executable.  Most people will create a
        link to busybox for each function they wish to use and BusyBox
        will act like whatever it was invoked as!

Currently defined functions:
        [, [[, adjtimex, arping, ash, awk, basename, brctl, bunzip2, bzcat, bzip2, cal, cat, chgrp, chmod, chown, chroot,
        chvt, clear, cmp, cp, cpio, cut, date, dc, dd, deallocvt, df, dirname, dmesg, dos2unix, du, dumpkmap, echo, egrep,
        env, expr, false, fgrep, find, fold, free, ftpget, ftpput, getopt, grep, gunzip, gzip, head, hexdump, hostid, hostname,
        httpd, id, ifconfig, ip, ipcalc, kill, killall, klogd, last, length, ln, loadfont, loadkmap, logger, logname, logread,
        losetup, ls, lzmacat, md5sum, mkdir, mkfifo, mknod, mktemp, more, mount, mt, mv, nameif, nc, netstat, nslookup, od,
        openvt, patch, pidof, ping, ping6, printf, ps, pwd, rdate, readlink, realpath, renice, reset, rm, rmdir, route, rpm,
        rpm2cpio, run-parts, sed, setkeycodes, sh, sha1sum, sleep, sort, start-stop-daemon, strings, stty, swapoff, swapon,
        sync, sysctl, syslogd, tac, tail, tar, tee, telnet, test, tftp, time, top, touch, tr, traceroute, true, tty, umount,
        uname, uncompress, uniq, unix2dos, unlzma, unzip, uptime, usleep, uudecode, uuencode, vi, watch, watchdog, wc, wget,
        which, who, whoami, xargs, yes, zcat

user@linode:~# ldd /bin/busybox
        linux-vdso.so.1 =>  (0x00007fff01dff000)
        libm.so.6 => /lib/libm.so.6 (0x00007fbf29a6d000)
        libc.so.6 => /lib/libc.so.6 (0x00007fbf296fd000)
        /lib64/ld-linux-x86-64.so.2 (0x00007fbf29cf1000)

user@linode:~# file /bin/busybox
/bin/busybox: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), stripped

apt-get install busybox-static

user@linode:~# file /bin/busybox
/bin/busybox: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, for GNU/Linux 2.6.8, stripped

user@linode:~# ldd /bin/busybox
        not a dynamic executable