BusyBox combines tiny versions of many common UNIX utilities

代码说明：

Please see the LICENSE file for details on copying and usage. Please refer to the INSTALL file for instructions on how to build. What is busybox:   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 bzip2, coreutils, dhcp, diffutils, e2fsprogs,   file, findutils, gawk, grep, inetutils, less, modutils, net-tools, procps,   sed, shadow, sysklogd, sysvinit, tar, util-linux, and vim.  The utilities   in BusyBox often have fewer options than their full-featured cousins;   however, the options that are included provide the expected functionality   and behave very much like their larger counterparts.   BusyBox has been written with size-optimization and limited resources in   mind, both to produce sma