Some of the commands are:
echo — prints text to stdout.
set — sets shell variables
export — makes shell variables
available to command-line
programs
cd — change the current directory.
pwd — print name of the current
directory.
Commands
Quote:
To find out what commands you
have available to you, use the “ls”
command on each of the
directories in the PATH variable.
Finding documentation for the
Android commands.
Many of the Android commands
are based on standard Linux (or
bsd) commands. If you’re curious
about a command, you can
sometimes learn how it works by
using the “man” command on a
desktop Linux or OSX (Apple
Macintosh) computer. The Linux or
OSX version of the command may
be different in details, but much of
the documentation will still apply
to the Android version of the
command.
Another source of documentation
for people without a Linux or OSX
machine handy is to use a web
browser and use a web search
engine to search for the text: “man
Linux command-name”.
List of commands
The following is a list of the
commands that are present on a
Nexus S phone running an Android
2.3.3 “user-debug” build. Many of
these commands are not present
on a “user” phone. (They are
missing from a “user” phone
because they are specific to
developing or debugging the
Android operating system.)
Code:
$ ls /data/local/bin
/data/local/bin: No such file or directory
Notice that by default there is no /
data/local/bin directory. You can
create this directory using the
“mkdir” command if you like.
Code:
$ ls /sbin
opendir failed, Permission denied
The /sbin directory exists, but you
don’t have permission to access it.
You need root access. If you have a
developer phone, or otherwise
have root access to your phone
you can see what’s in this
directory.
Code:
$ su
# ls /sbin
ueventd
adbd
# exit
$
Quote:
Notice that the shell prompt
changes from a ‘$’ to a ‘#’ to
indicate that you have root access.
Notice also that neither of the /
sbin commands are useful to the
shell — the adb and ueventd files
are ‘daemon’ programs used to
implement the Android Debugger
“adb” program that is used by
developers.
Code:
$ ls /vendor/bin
gpsd
pvrsrvinit
Vendor/bin is where device
vendors can put device-specific
executables. These files are from a
Nexus S.
Code:
$ ls /system/sbin
/system/sbin: No such file or directory
This directory does not exist on a
Nexus S.
Code:
$ ls /system/bin
am
Quote:
am is the Android Activity
Manager. It’s used to start and
stop Android activities (e.g.
applications) from the command
line. Type am by itself to get a list
of options.
Code:
amix
aplay
Command line audio file player.
Code:
app_process
applypatch
Used to apply patches to android
files.
Code:
arec
Command line audio recorder.
Code:
audioloop
bluetoothd
BlueTooth daemon
Code:
bmgr
Backup manager – type command
by itself to get documentation.
Code:
bootanimation
Draws the boot animation. You may
have to reset your phone to get
out of this
Code:
brcm_patchram_plus
bugreport
cat
Copy the contents of a file to
standard output.
Code:
chmod
Change the mode of a file (e.g.
whether it can be read or written.)
Code:
chown
Change the owner of a file.
Code:
cmp
Compare two files byte-by-byte
Code:
dalvikvm
The dalvik virtual machine. (Used
to run Android applications.)
Code:
date
Prints the current date and time
Code:
dbus-daemon
dd
Convert and copy a file. By default
copies standard in to standard out.
Code:
debuggerd
dexopt
df
Shows how much space is free on
different file systems on your
device.
Code:
dhcpcd
dmesg
dnsmasq
dumpstate
dumpsys
dvz
fsck_msdos
gdbserver
getevent
getprop
gzip
hciattach
hd
id
ifconfig
iftop
ime
input
insmod
installd
ioctl
ionice
iptables
keystore
Send signals to processes.
Code:
linker
ln
Used to set up a file system link.
Code:
log
logcat
Prints the Android runtime log.
Code:
logwrapper
ls
Lists files.
Code:
lsmod
lsof
make_ext4fs
mediaserver
mkdir
Make a directory.
Code:
monkey
A program that sends random
events, used to test applications.
(Like having a monkey playing with
the device.)
Code:
mount
mtpd
mv
Move a file from one directory to
another. (Only on the same file
system. Use “cat a > b” to copy a
file between file systems.
Code:
nandread
ndc
netcfg
netd
netstat
newfs_msdos
notify
omx_tests
pand
ping
pm
pppd
printenv
ps
List active processes.
Code:
qemu-props
qemud
racoon
radiooptions
reboot
Reboot the device.
Code:
record
renice
rild
rm
Remove a file.
Code:
rmdir
Remove a directory.
Code:
rmmod
route
rtp_test
run-as
schedtest
schedtop
sdcard
sdptool
sendevent
service
servicemanager
setconsole
setprop
setup_fs
sh
showlease
sleep
smd
stagefright
Starts the Android runtime.
Code:
stop
Stops the Android runtime.
Code:
surfaceflinger
svc
sync
system_server
tc
testid3
toolbox
top
Shows which processes are
currently using the most CPU time.
Code:
umount
uptime
Prints how long your device has
been running since it was last
booted.
Code:
vdc
vmstat
vold
watchprops
wipe
wpa_cli
wpa_supplicant
$ ls /system/xbin
add-property-tag
btool
check-lost+found
dexdump
dhdutil
hcidump
latencytop
librank
opcontrol
oprofiled
procmem
procrank
rawbu
Secure copy program. (Used to
copy files over the network.)
Code:
showmap
showslab
sqlite3
Used to administer SQLite
databases.
Code:
strace
System trace command – use to see
what system calls a program
makes.
Code:
su
Start a shell with root privileges.
............... End...........
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