here's log
[email protected]:/ # cd /system/bin
cd /system/bin
[email protected]:/system/bin # ls
ls
adb
am
app_process
app_process.orig
applypatch
atrace
bcm4334.hcd
bcm4334_murata.hcd
bcm4334_semcosh.hcd
bintvoutservice
blkid
bmgr
bootanimation
bu
bugreport
cat
chcon
chmod
chown
clatd
clear
cmp
content
corrupt_gdt_free_blocks
cp
dalvikvm
date
dd
debuggerd
dex2oat
dexopt
df
dhcpcd
dmesg
dnsmasq
drmserver
du
dump_image
dumpstate
dumpsys
e2fsck
erase_image
f2fs
flash_image
fsck.exfat
fsck_msdos
gdbserver
getenforce
getevent
getprop
getsebool
gps.cer
gpsd
grep
gzip
hd
hostapd
hostapd_cli
id
ifconfig
iftop
ime
input
insmod
installd
ioctl
ionice
ip
ip6tables
iptables
keystore
keystore_cli
kill
linker
ln
load_policy
log
logcat
logwrapper
lpmkey
ls
lsmod
lsof
macloader
make_ext4fs
md5
mdnsd
media
mediaserver
mkdir
mke2fs
mkfs.exfat
mksh
mkswap
monkey
mount
mount.exfat
mtpd
mv
nandread
ndc
netcfg
netd
netstat
newfs_msdos
notify
oatdump
ping
ping6
playlpm
pm
pngtest
pppd
printenv
ps
r
racoon
radiooptions
readlink
reboot
renice
requestsync
restorecon
rild
rm
rmdir
rmmod
route
run-as
runcon
schedtest
schedtop
screencap
screenrecord
screenshot
sdcard
sendevent
sensorservice
service
servicemanager
set_ext4_err_bit
setconsole
setenforce
setprop
setsebool
settings
setup_fs
sh
showlease
sleep
smd
start
stop
surfaceflinger
svc
swapoff
swapon
sync
sysinit
tc
tinymix
tinyplay
toolbox
top
touch
tune2fs
uiautomator
umount
uptime
vdc
vmstat
vold
watchprops
wipe
wm
wpa_cli
wpa_supplicant
[email protected]:/system/bin # f2fs
f2fs
/system/bin/sh: f2fs: No such file or directory
1|[email protected]:/system/bin # ./f2fs
./f2fs
/system/bin/sh: ./f2fs: No such file or directory
1|[email protected]:/system/bin #
