In case you are interested, here is a partial list of linux-like commands on Android OS:
/sbin
adbd
devmgr
recovery
dfta
init
dfta.sh
fat.format
redbend_ua
/system/bin (partial list)
sh
date
netstat
mount
umount
rmdir
setconsole
bluetoothd
reboot
logcat
cmp
linker
bugreport
iftop
gpsd
schedtop
fsck_msdos
rmmod
id
notify
input
dhcpd
dmesg
sendevent
renice
ioctl
iperf
dumpmsg
toolbox
dumpstate
lsmod
ln
rm
dd
netcfg
pppd
ifconfig
df
ping
kill
printenv
keystore
route
ps
newfs_msdos
hd
dumpsys
installd
iptables
getprop
chown
applypatch
chown
debuggerd
sync
service
mv
wipe
gzip
ls
getevent
stop
start
There are other standard commands like:
cd
pwd
and more... but I will add them later (or if you use Android, please help me out!)
Also, there is a Linux-style /proc filesystem.