Android 有些机型不带tcpdump的解决办法

输入mount命令

[quote]mount

rootfs on / type rootfs (ro,relatime)

tmpfs on /dev type tmpfs (rw,relatime,mode=755)

devpts on /dev/pts type devpts (rw,relatime,mode=600)

proc on /proc type proc (rw,relatime)

sysfs on /sys type sysfs (rw,relatime)

tmpfs on /sqlite_stmt_journals type tmpfs (rw,relatime,size=4096k)

none on /dev/cpuctl type cgroup (rw,relatime,cpu)

/dev/block/mtdblock3 on /system type yaffs2 (ro,relatime)

/dev/block/mtdblock5 on /data type yaffs2 (rw,nosuid,nodev,relatime)

/dev/block/mtdblock4 on /cache type yaffs2 (rw,nosuid,nodev,relatime)

/dev/block//vold/179:1 on /sdcard type vfat (rw,dirsync,nosuid,nodev,noexec,rela

time,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,ioc

harset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)[/quote]


可以看到

[quote]/dev/block/mtdblock3 on /system type yaffs2 (ro,relatime)[/quote]


重新挂载 输入命令

[quote]mount -o remount /dev/block/mtdblock3 /system [/quote]



再次输入mount

可以看到

[quote]# mount

mount

rootfs on / type rootfs (ro,relatime)

tmpfs on /dev type tmpfs (rw,relatime,mode=755)

devpts on /dev/pts type devpts (rw,relatime,mode=600)

proc on /proc type proc (rw,relatime)

sysfs on /sys type sysfs (rw,relatime)

tmpfs on /sqlite_stmt_journals type tmpfs (rw,relatime,size=4096k)

none on /dev/cpuctl type cgroup (rw,relatime,cpu)

/dev/block/mtdblock3 on /system type yaffs2 (rw,relatime)

/dev/block/mtdblock5 on /data type yaffs2 (rw,nosuid,nodev,relatime)

/dev/block/mtdblock4 on /cache type yaffs2 (rw,nosuid,nodev,relatime)

/dev/block//vold/179:1 on /sdcard type vfat (rw,dirsync,nosuid,nodev,noexec,rela

time,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,ioc

harset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)[/quote]


可以看到/system已经可以任意删除修改


然后把tcpdump文件导入到/system/xbin/目录下

[quote]adb push d:/tcpdump /system/xbin/[/quote]


然后运行命令


[quote]# cd system

cd system

# cd xbin

cd xbin

# ls

ls

tcpdump

# ./tcpdump

./tcpdump

./tcpdump: permission denied

# chmod +x tcpdump

chmod +x tcpdump

# ./tcpdump

./tcpdump

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

listening on rmnet0, link-type EN10MB (Ethernet), capture size 96 bytes[/quote]


增加权限之后 tcpdump就可以使用了