rtmpdump -v -r "rtmp://h2k.rtp.pt/fastplay" -y "mp4:nas2.share/h264/512x384/palegria/praca_3_20121227.mp4" -o file.mp4

adb shell dumpsys activity services net.package

Very very very helpful when the apk reach the max of 64K method limit. "java.lang.IllegalArgumentException: Dex method index overflow [65643]"


totalmethods=0
for jar in `find . -type f -name "*.jar"`; do
echo $jar
dx --dex --output=temp.dex $jar 2> /dev/null
jarmethods=$(cat temp.dex | head -c 92 | tail -c 4 | hexdump -e '1/4 "%d\n"')
echo $jarmethods
totalmethods=$(($a+$totalmethods))
echo $totalmethods
done


Here is a list of libraries that worth mentioning:

This might be helpful for someone that want facebook to show album photos in continuous mode!


var secondsDelay =2000;
var elem = document.getElementsByClassName("snowliftPager next hilightPager")[0];
setInterval(function() {
elem.click();
},secondsDelay);


How to download an image from google:

def getimageurlfromgoogle(query)
response = Net::HTTP.get_response('ajax.googleapis.com',
URI.encode("/ajax/services/search/images?v=1.0&q=#{query}&as_filetype=png&safe=active"))
JSON.parse(response.body)["responseData"]["results"][0]["url"]
end

The first result is not always the best result!!

This is extremely useful when there is a machine inside a network which can't have open ports. By using ssh remote port forwarding, it's possible to access that machine using another machine that can have open ports for everyone.

SSH Snippet: autossh -M 0 -N -f -R REMOTESERVER_ACCESSIBLE_BY_EVERYONE:8080:LOCAL_SERVER_NOT_ACCESSIBLE:8080 user@REMOTESERVER_ACCESSIBLE_BY_EVERYONE

Some necessary commands and files to use tcpdump and wireshark with any Android device with root. The necessary files can be download from here: http://www.strazzere.com/android/tcpdump

mount -o remount,rw /system
cp /sdcard/data/tcpdump system/bin
chmod 777 tcpdump
mount -o remount,ro /system

This is really helpful!! Sometimes I need to test an app that is not available in my country or it is not available to install on my device because of tue requirements but I want to install it anyway, then this is just what I need:
http://apps.evozi.com/apk-downloader/

Here is the very useful command to install a common app as system app. It's not necessary to say that's mandatory that the device needs to be rooted!

Explanation:
#remount system partition with read and write capabilities
#move the app from the sdcard to the /system/app directory
#remount again as read only
#reboot the device

This command is very useful when you need to start an activity from shell environment that needs to receive args (extras in the intent).

Cmd:
adb shell am start -e extraName extraValue -n packageName/.activityName {activity flags}

Example:
adb shell am start -e Language PT -n pt.fraunhofer.util.changelanguage/.ActivityChangeLanguage --activity-clear-top