Android安装Busybox
这个只为开发者用，一般人别用。
最新的busybox已经足够强大，强大到不可想像了添加了很多命令，对开发者来说是极为好用的。
如果你是个拿来主义，把这个下载了，在system分区解压就好了。toolbox中特有的命令还是会保留的，相同的命令会替换。我使用的是armv4指令集的交叉工具链编译的，目的就是尽可能的通用。如果你的Android设备不能用，那么就得自己编译了。（编译好的:http://download.csdn.net/detail/kangear/7564291，将压缩包放到Android手机中，进行第7步解压操作就好了！）
编译一个busybox，前提你装好了交叉工具链，以下就是编译脚本。
#!/bin/sh#@author : kangear#@function: build busybox static.# 1.download sourcewget http://www.busybox.net/downloads/busybox-1.22.1.tar.bz2 -O busybox.tar.bz2 || exit 1# 2.uncompress and cdtar xvjf busybox.tar.bz2 && cd busybox-1.22.1 || exit 1# 3.configmake defconfig CROSS_COMPILE=arm-linux- || exit 1# 4.modify busybox.linksmake CROSS_COMPILE=arm-linux- LDFLAGS=--static install || exit 1rm _install -rf || exit 1# 4.1 delect linuxrc linesed -i '/linuxrc/d' busybox.links || exit 1# 4.2 sbin usr/bin usr/sbin => binsed -i 's/usr\/sbin/bin/' busybox.links || exit 1sed -i 's/usr\/bin/bin/' busybox.links || exit 1sed -i 's/sbin/bin/' busybox.links || exit 1# 5. build & installmake CROSS_COMPILE=arm-linux- LDFLAGS=--static install || exit 1# 6. tar cvzf# adb push /system/bin & tar xvzf bin.tar.gztar cvzf busybox_bin.tar.gz -C _install/ bin || exit 1# 7. install into Android# 7.1 将/system分区进行remount成可写的# 7.2 将busybox_bin.tar.gz放置到Android文件系统中任何位置# 7.3 tar xvzf busybox_bin.tar.gz -C /system/包含的命令：
root@android:/ # busyboxBusyBox v1.22.1 (2014-06-27 15:14:59 CST) multi-call binary.BusyBox is copyrighted by many authors between 1998-2012.Licensed under GPLv2. See source distribution for detailedcopyright notices.Usage: busybox [function [arguments]...] or: busybox --list[-full] or: busybox --install [-s] [DIR] 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: [, [[, acpid, add-shell, addgroup, adduser, adjtimex, arp, arping, ash, awk, base64, basename, beep, blkid, blockdev, bootchartd, brctl, bunzip2, bzcat, bzip2, cal, cat, catv, chat, chattr, chgrp, chmod, chown, chpasswd, chpst, chroot, chrt, chvt, cksum, clear, cmp, comm, conspy, 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, fgconsole, fgrep, find, findfs, flock, fold, free, freeramdisk, fsck, fsck.minix, fstrim, fsync, ftpd, ftpget, ftpput, fuser, getopt, getty, grep, groups, gunzip, gzip, halt, hd, hdparm, head, hexdump, hostid, hostname, httpd, hush, hwclock, id, ifconfig, ifdown, ifenslave, ifplugd, ifup, inetd, init, insmod, install, ionice, iostat, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink, iproute, iprule, iptunnel, kbd_mode, kill, killall, killall5, klogd, last, less, linux32, linux64, linuxrc, ln, loadfont, loadkmap, logger, login, logname, logread, losetup, lpd, lpq, lpr, ls, lsattr, lsmod, lsof, lspci, lsusb, lzcat, lzma, lzop, lzopcat, makedevs, makemime, man, md5sum, mdev, mesg, microcom, mkdir, mkdosfs, mke2fs, mkfifo, mkfs.ext2, mkfs.minix, mkfs.vfat, mknod, mkpasswd, mkswap, mktemp, modinfo, modprobe, more, mount, mountpoint, mpstat, mt, mv, nameif, nanddump, nandwrite, nbd-client, nc, netstat, nice, nmeter, nohup, nslookup, ntpd, od, openvt, passwd, patch, pgrep, pidof, ping, ping6, pipe_progress, pivot_root, pkill, pmap, popmaildir, poweroff, powertop, printenv, printf, ps, pscan, pstree, pwd, pwdx, raidautorun, rdate, rdev, readahead, readlink, readprofile, realpath, reboot, reformime, remove-shell, renice, reset, resize, rev, rm, rmdir, rmmod, route, rpm, rpm2cpio, rtcwake, run-parts, runlevel, runsv, runsvdir, rx, script, scriptreplay, sed, sendmail, seq, setarch, setconsole, setfont, setkeycodes, setlogcons, setserial, setsid, setuidgid, sh, sha1sum, sha256sum, sha3sum, sha512sum, showkey, slattach, sleep, smemcap, 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, traceroute6, true, tty, ttysize, tunctl, ubiattach, ubidetach, ubimkvol, ubirmvol, ubirsvol, ubiupdatevol, udhcpc, udhcpd, udpsvd, umount, uname, unexpand, uniq, unix2dos, unlzma, unlzop, unxz, unzip, uptime, users, usleep, uudecode, uuencode, vconfig, vi, vlock, volname, wall, watch, watchdog, wc, wget, which, who, whoami, whois, xargs, xz, xzcat, yes, zcat, zciproot@android:/ # 另：关于《busybox无法ping域名的解决办法 》可以尝试如下实现busybox 中的ping:
#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <netdb.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#define oops(msg) { perror(msg); exit(1);}void fillip(char* buffer, const char* ip);char* name2ip(const char* name);/** * * head len: 12 * * query: ? + 4 * * total: strlen(query.buffer) + 16 * */typedef struct{ u_short txid; u_short flag; u_short question; u_short answer; u_short authority; u_short additional; char buffer[256]; struct { u_short type; u_short cls; }query;}dns_req;/** length of resp: 12 */typedef struct{ u_short txid; u_short flag; u_short question; u_short answer; u_short authority; u_short addtional; char buffer[1024]; struct{ u_short name; u_short type; u_short cls; u_short live_l; u_short live_h; u_short len; struct in_addr addr; }resp;}dns_res;int main(){ char* p = name2ip("www.baidu.com"); printf("ip is:%s\n", p); return 0;}char* name2ip(const char *node){ struct sockaddr_in dns; dns_req req; dns_res res; int sockid, len, index; char* dnsip = "61.139.2.69"; //char* dnsip = "202.114.215.73"; sockid = socket(PF_INET, SOCK_DGRAM, 0); if(sockid == -1) oops("socket"); memset((void*)&dns, 0, sizeof(dns)); dns.sin_family = AF_INET; dns.sin_port = htons(53); dns.sin_addr.s_addr = inet_addr(dnsip); memset((void*)&req, 0, sizeof(req)); req.txid = htons(0x4419); req.flag = htons(0x0100); req.question = htons(1); fillip(req.buffer,node); req.query.type=htons(1); req.query.cls=htons(1); memcpy(req.buffer+strlen(req.buffer)+1, (void*)(&req.query), sizeof(req.query)); sendto(sockid, (void*)&req, strlen(req.buffer)+17, 0, (struct sockaddr*)&dns, sizeof(dns)); recvfrom(sockid, (void*)&res, sizeof(res), 0, (struct sockaddr*)&dns, &len); index = strlen(res.buffer)+5; while(1){ memcpy((void*)&(res.resp), res.buffer+index, 12); if(ntohs(res.resp.type)==1){ memcpy((void*)&(res.resp.addr), res.buffer+index+12, 4); break; } index += ntohs(res.resp.len) + 12; } return inet_ntoa(res.resp.addr);}void fillip(char* buffer, const char* ip){ int i,j=0; for(i = 0; ip[i] != 0; i ++){ if(ip[i] != '.'){ buffer[i+1] = ip[i]; } else{ buffer[j] = i - j; j = i + 1; } } buffer[j] = i - j;}先获取地区dns或者路由器上的dns或者getprop中的dns，思路先留在这里，以后有时候再完善。
/ # getprop | grep dns[dhcp.eth0.dns1]: [192.168.100.1][dhcp.eth0.dns2]: [][dhcp.eth0.dns3]: [][dhcp.eth0.dns4]: [][dhcp.wlan0.dns1]: [192.168.2.1][dhcp.wlan0.dns2]: [][dhcp.wlan0.dns3]: [][dhcp.wlan0.dns4]: [][net.change]: [net.eth0.dns2][net.dns1]: [192.168.100.1][net.dnschange]: [4][net.eth0.dns1]: [49.0.0.0][net.eth0.dns2]: [][net.wlan0.dns1]: [49.0.0.0][net.wlan0.dns2]: []