Follow the below steps to set the preset value for responsive design testing on mobile devices i) Go to the address bar in firefox and type "about.config" ii) You will get a warning message stating "This might void your warranty ... Changing these advanced settings can be harmful to the stability .....". Click the button "I'll be careful, I promise!' iii) In the search bar, type "presets" and look through the filter values for "devtools.responsiveUI.presets". Double click on the preference name "devtools.responsiveUI.presets" and enter the values [{"key":"320x480","name":"iPhone 3g/3gs","width":320,"height":480},{"key":"360x640","name":"Nokia E7, n90","width":360,"height":640},{"key":"640x960","name":"iPhone4/4s","width":640,"height":960},{"key":"640x1136","name":"iPhone5/5c/5s","width":640,"height":1136},{"key":"768x1024","name":"ipad1/2","width":768,"height":1024},{"key":"800x480","name":"Android-WVGA","width":800,"height":480},{"key":"800x1280","name":"KindleFireHD8.9","width":800,"height":1280},{"key":"2048x1536","name":"Retina display","width":2048,"height":1536},{"key":"600x800","name":"KindleFire/Galaxy/Nexus","width":600,"height":800}] Once the values are entered, you can open a new instance of the browser and click ctrl + shift + m to open up the responsive web view

Quirktools - Screenfly Interesting site to test mobile web pages of various screen sizes (kindle fire, samsung galaxy tab, google nexus 7, apple ipad 1 - 3 mini, kindle fire HD,  motorola razr v3m, motorola razr v8, blackberry 8300, apple iphone 3 & 4, LG optimus S, Samsung galaxy S2, ASUS galaxy 7, apple iphone 5, samsung galaxy s3/s4) Also this tool offers landscape and portrait modes in addition to scroll & retina effect. Studiopress - Responsive testing Responsive test from responsivetest.net Another interesting tool available online to check web page responsiveness on mobile phones, tablets, laptops and desktops. The web tool has resolutions for testing categorized by devices Apple, Blackberry (Bold 9930, Q10, Torch 9810, Torch 9850, Z10), Samsung, HTC, LG Other tools Browser resizing - http://resizemybrowser.com/ Responsive pixel - http://responsivepx.com/ Demonstrating responsive design - http://www.jamus.co.uk/demos/rwd-demonstrations/ Refer Wikipedia for the display of devices by pixel density http://en.wikipedia.org/wiki/List_of_displays_by_pixel_density

Apache server is installed by default on Mac. Access the configuration settings for Apache by going to $ cd /etc/apache2/ $ vi httpd.conf To enable php, edit httpd.conf and uncomment the line #LoadModule php5_module libexec/apache2/libphp5.so Uncomment other lines that you may want to load in your system. As you are enabling PHP in your system, you may want to change the DirectoryIndex to DirectoryIndex index.php index.html Default group/user settings inside Apache on Mac is _www:_www (more…)

$ fdisk -l /dev/sda Device Boot Start End Blocks Id System /dev/sda1 * 1 128 1024000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 128 383 2048000 83 Linux Partition 2 does not end on cylinder boundary. This is not a problem and is commonly seen in new systems. (more…)

The reason why this message is shown is because the user for the view does not exist in the database. There are few ways by which we can remove this error i) Alter statement ii) Create the specified user in the database iii) Modify the .frm files related to the view and set the definer We will show the Alter statement method to achieve the desired results # To fix it: mysql> ALTER DEFINER = 'root'@'localhost' VIEW `mytableview` AS select * from cities; mysql> SELECT * FROM mytableview; Sometimes it so happens that the view statement will be a big selection of fields with joins in it. Export the table first to get the required SELECT statement for the view and then change the DEFINER  

In earlier systems, passwords were stored in the file /etc/passwd and they were not encrypted. After the user is created, an entry gets recorded in /etc/passwd with 'x' in the second column instead of the acutal password. $ useradd timmy $ cat /etc/passwd timmy:x:1002:1003::/home/timmy:/bin/sh For security reasons, passwords are now stored in the file /etc/shadow and they are encrypted. Password was not set initially, when the user was created. This is indicated by !! mark (in RedHat, ! - Debian) $ cat /etc/shadow timmy:!!:15870:0:99999:7::: (more…)