华为荣耀3c  4.4 
kolya@asus ~/src/aosp_master/system/core $ adb shell ls -l /system/xbin
-rwxr-xr-x root     shell       17912 2015-08-27 04:02 BGW
-rwxr-xr-x root     shell       59752 2015-08-27 04:02 dexdump
-rwxr-xr-x root     shell       34572 2015-08-27 04:02 libmnlp_mt6582
-rwxr-xr-x root     shell       30196 2015-08-27 04:02 mnld
-rwxr-xr-x root     shell        9440 2015-08-27 04:02 showmap
-rwxr-xr-x root     root       624204 2015-08-27 04:02 tcpdump
kolya@asus ~/src/aosp_master/system/core $ adb shell ls -l /system/bin/toolbox
-rwxr-xr-x root     shell      138984 2015-08-27 04:02 toolbox
kolya@asus ~/src/aosp_master/system/core $ adb shell ls -l /system/bin/ls
lrwxr-xr-x root     shell             2015-08-27 04:02 ls -> toolbox
kolya@asus ~/src/aosp_master/system/core $ adb shell ls -l /system/bin/more
/system/bin/more: No such file or directory
kolya@asus ~/src/aosp_master/system/core $ adb shell ls -l /system/bin/grep
lrwxr-xr-x root     shell             2015-08-27 04:02 grep -> toolbox


红米note3  6.0
shell@kenzo:/system/xbin $ ls -l
-rwxr-xr-x root     shell       10096 2009-01-01 00:00 antradio_app
-rwxr-xr-x root     shell     1165484 2009-01-01 00:00 busybox  小米加的
-rwxr-xr-x root     shell       72264 2009-01-01 00:00 dexdump
-rwxr-xr-x root     shell       14400 2009-01-01 00:00 miuioneshots
lstat './mqsasd' failed: Permission denied  小米加的
lstat './shelld' failed: Permission denied   小米加的
-rwxr-xr-x root     shell     1228200 2009-01-01 00:00 tcpdump


1|shell@kenzo:/ $ ls -l /system/bin/ls                                         
lrwxr-xr-x root     shell             2009-01-01 00:00 ls -> toolbox
shell@kenzo:/ $ ls -l /system/bin/toybox                                       
-rwxr-xr-x root     shell      310800 2009-01-01 00:00 toybox