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大家可以尝试下：

解决方案之一是下一个busybox编译，然后自己建个符号连接。

我用的是busybox1.15.2，里面包含的了这两个命令：

$ ./busybox

BusyBox v1.15.2 (2010-03-22 11:29:01 CST) multi-call binary

Copyright (C) 1998-2008 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:

[, [[,

addgroup, adduser, adjtimex, ar, arp, arping, ash, awk, basename,

beep, blkid,

brctl,

bunzip2, bzcat, bzip2, cal, cat, catv, chat, chattr, chgrp, chmod,

chown, chpasswd,

chpst,

chroot, chrt, chvt, cksum, clear, cmp, comm, cp, cpio, crond,

crontab, cryptpw,

cttyhack,

cut, date, dc, dd, deallocvt, delgroup, deluser,

depmod, devmem, df, dhcprelay,

diff,

dirname, dmesg, dnsd, dnsdomainname, dos2unix, du, dumpkmap,

dumpleases, echo,

ed,

egrep, eject, env, envdir, envuidgid, ether-wake, expand, expr,

fakeidentd, false, fbset,

fbsplash,

fdflush, fdformat, fdisk, fgrep, find, findfs, fold, free, freeramdisk, fsck, fsck.minix,

fsync,

ftpd, ftpget, ftpput, fuser, getopt, getty, grep, gunzip, gzip,

halt, hd, hdparm, head,

hexdump,

hostid, hostname, httpd, hush, hwclock, id, ifconfig, ifdown,

ifenslave, ifplugd,

ifup,

inetd, init, insmod, install, ionice, ip, ipaddr, ipcalc, ipcrm,

ipcs, iplink, iproute, iprule,

iptunnel,

kbd_mode, kill, killall, killall5, klogd, last, length, less,

linux32, linux64, linuxrc, ln,

loadfont,

loadkmap, logger, login, logname, logread, losetup, lpd, lpq, lpr,

ls, lsattr, lsmod,

lzmacat,

lzop, lzopcat, makedevs, makemime, man, md5sum, mdev, mesg,

microcom,

mkdir,

mkdosfs, mkfifo, mkfs.minix, mkfs.vfat, mknod, mkpasswd, mkswap,

mktemp,

modprobe,

more, mount, mountpoint, msh, mt, mv, nameif, nc, netstat, nice,

nmeter,

nohup,

nslookup, od, openvt, passwd, patch, pgrep, pidof, ping, ping6,

pipe_progress,

pivot_root, pkill, popmaildir, poweroff, printenv, printf, ps,

pscan, pwd, raidautorun, rdate,

rdev,

readahead, readlink, readprofile, realpath, reboot, reformime,

renice, reset, resize, rm,

rmdir,

rmmod, route, rtcwake, run-parts, runlevel, runsv, runsvdir, rx,

script, scriptreplay,

sed,

sendmail, seq, setarch, setconsole, setfont, setkeycodes,

setlogcons, setsid, setuidgid,

sh,

sha1sum, sha256sum, sha512sum, showkey, slattach, sleep, softlimit,

sort, split,

start-stop-daemon, stat, strings, stty, su, sulogin, sum, sv,

svlogd, swapoff, swapon,

switch_root, sync, sysctl, syslogd, tac, tail, tar, tcpsvd, tee,

telnet, telnetd, test, tftp, tftpd,

time,

timeout, top, touch, tr, traceroute, true, tty, ttysize, tunctl,

udhcpc, udhcpd, udpsvd,

umount,

uname, uncompress, unexpand, uniq, unix2dos, unlzma, unlzop, unzip,

uptime,

usleep,

uudecode, uuencode, vconfig, vi, vlock, volname, watch, watchdog,

wc, wget, which,

who, whoami,

xargs, yes, zcat, zcip