blosmr

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Have a problem installing Flash player for your Firefox in Ubuntu

If you have a problem installing Flash player for Firefox in Ubuntu, there’s a Firefox add-on named “Flash-Aid” which will help  you install the correct version of Flash player for your browser.

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Find your IP address in Ubuntu with command line

ifconfig

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Vibrate an Android phone from your app

IN YOUR XML MANIFEST FILE:

<uses-permission android:name="android.permission.VIBRATE"/>

IN YOUR CODE:

// get vibrator service instance from context

Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

// vibrate for 1 second

v.vibrate(1000);

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Optimize your PNG images with pngcrush

Crush your .png images and put the optimized ones in crushed-images folder:

pngcrush -d crushed-images *.png

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Convert your image format using imagemagick in batch mode

Convert all .gif images in current folder to .png format by preserving transparent background:

mogrify -alpha Background -format png *.gif

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Access your Android app Sqlite3 db from command line

1. adb shell

2. cd data/data

3. cd com.oudom.myapp (it’s the namespace for my app)

4. cd databases

5. ls

6. sqlite3 mydb (replace mydb with your own db name)

7. .tables

8. .schema mytable (replace mytable with your table name)

9. select * from mytable;

10. .exit (to quit from sqlite mode)

11. exit (again to exit from adb shell)

12. good luck