UNIX Command $dpkg -L busybox /. /bin /bin/busybox /usr /usr/share /usr/share/man /usr/share/man/man1 /usr/share/man/man1/busybox.1.gz /usr/share/doc /usr/share/doc/busybox /usr/share/doc/busybox/copyright /usr/share/doc/busybox/changelog.Debian.gz $mount /dev/sda1 on / type ext3 (rw,errors=remount-ro,commit=0) tmpfs on /lib/init/rw type tmpfs (rw,nosuid,size=5242880,mode=755,size=5242880,mode=755) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=755,size=10%,mode=755) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) udev on /dev type tmpfs (rw,mode=0755) tmpfs on /run/shm type tmpfs (rw,nosuid,nodev,size=20%,mode=1777,size=20%,mode=1777) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620,gid=5,mode=620) fusectl on /sys/fs/fuse/connections type fusectl (rw) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) $busybox mount rootfs on / type rootfs (rw) sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) udev on /dev type devtmpfs (rw,relatime,size=991460k,nr_inodes=2478100,mode=755) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=199580k,mode=755) /dev/disk/by-uuid/26cca090-8a72-4443-859f-7a67b7188357 on / type ext3 (rw,relatime,errors=remount-ro,commit=5,barrier=1,data=ordered) tmpfs on /lib/init/rw type tmpfs (rw,nosuid,relatime,size=5120k,mode=755) tmpfs on /run/shm type tmpfs (rw,nosuid,nodev,relatime,size=399156k) fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime) $ UNIX Explanation 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. Why ? 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.