root@LINKSTATION:~$ busybox
BusyBox v1.2.1 (2007.06.24-09:57+0000) multi-call binary

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:
        [, [[, addgroup, adduser, ar, arping, ash, awk, basename, bunzip2, busybox, bzcat, cat, chattr, chgrp, chmod, chown, chroot,
        chvt, cksum, clear, cp, cpio, crond, crontab, cut, date, dc, dd, deallocvt, delgroup, deluser, df, diff, dirname, dmesg, du,
        e2fsck, e2label, echo, egrep, env, ether-wake, expr, false, fdisk, fgrep, find, findfs, free, freeramdisk, fsck, fsck.ext2,
        fsck.ext3, fuser, getopt, getty, grep, gunzip, gzip, halt, hdparm, head, hexdump, hostname, httpd, hwclock, id, ifconfig,
        ifdown, ifup, init, insmod, install, ip, kill, killall, klogd, last, less, linuxrc, ln, lock, logger, login, logname, logread,
        losetup, ls, lsattr, lsmod, md5sum, mkdir, mke2fs, mkfifo, mkfs.ext2, mkfs.ext3, mknod, mkswap, mktemp, modprobe, more, mount,
        mv, nameif, nc, netstat, nice, nohup, nslookup, od, openvt, passwd, patch, pidof, ping, ping6, pivot_root, poweroff, printf,
        ps, pwd, rdate, readlink, readprofile, realpath, reboot, renice, reset, rm, rmdir, rmmod, route, run-parts, rx, sed, seq,
        setconsole, sh, sleep, sort, start-stop-daemon, strings, stty, su, sulogin, swapoff, swapon, switch_root, sync, sysctl, syslogd,
        tail, tar, tee, telnet, test, tftp, time, top, touch, tr, traceroute, true, tty, tune2fs, udhcpc, umount, uname, uniq, unzip,
        uptime, usleep, vi, watch, wc, wget, which, who, whoami, xargs, yes, zcat