Eclipse keyboard shortcuts and Sublime Text 3 keybord shortcuts

Switching from Eclipse to Sublime Text 3?,  need some quick shortcuts to

1. Switching/Moving Lines up and down
Eclipse shortcut:  ⌘-UP to move lines up,  ⌘-DOWN to move lines down,
Sublime Text 3: CTRL-⌘-UP to move lines up, CTRL-⌘-DOWN to move lines down.

2. Deleting Entire Line your cursor is on 
Eclipse shortcut:⌘-D
Sublime Text 3: CTRL-SHIFT-K

3. Goto Line in File 
Eclipse shortcut: ⌘-L
Sublime Text 3: ⌘-P, then type a colon followed by the line number (e.g. :12 for line 12). To go to a line in another file, type the file name and then a colon and the line number.

LaTeX: LaTeX Templates for Nature, Science and for various physics journals

Here is where you can find LaTeX templates for various physics journals:

Nature: [Download here]

LaTeX templates for other Physics Journals:  [Click here ] 

Mac: Install OPEN MPI on Mac OS

Step 1 : If you haven't installed XCODE. Download and Install XCODE

Step 2 :
Install Open MPI. Download the latest stable release of Open MPI from the Open Source High Performance Computing website.

Step 3:
Open terminal and Go to the downloaded directory

Extract the downloaded archive :
tar -zxvf openmpi-1.6.5.tar.gz

Open terminal and Go to the extracted directory:
cd /path/to/extracted/openmpi-1.6.5

Run the following commands
./configure --prefix=/usr/local
make all
sudo make install

Step 4: Add OpenMPI path to your path, run the following commands export

PATH=/usr/local/openmpi/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/openmpi/lib:$LD_LIBRARY_PATH
export DYLD_LIBRARY_PATH=$LD_LIBRARY_PATH

Step 5: Compile your C/C++ program
For C:
mpicc -o myProgExe myProg.c

For C++:
mpic++ -o myProgExe myProg.cpp

Step 6: Run, where -np is the number of processor to run on.
mpirun -np 8 myProgExe

Gmail Tricks ;), Get more usage out of your Gmail address !

1. Create Filters with multiple Senders
Use the 'OR' keyword in between emails. 
Set up the filter as "email1@gmail.com OR email2@gmail.com" and continue from there.


2. The Plus Sign (+) in your Gmail address
For example you have an email address: ravi@gmail.com, then

• ravi@gmail.com = ravi+anything@gmail.com = ravi+socialmedia@gmail.com

Gmail ignores anything after the + sign.  But sends/recieves with the full email address.

So, Why do you want to use the + sign ? To manage junk and unwanted emails :)

You can use this kind of email address at some social or coupon websites to register and later manage(probably delete) all their associated emails or notifications. 

So for example, you could register at these websites with ravi+couponjunk@gmail.com . And then create a filter with ravi+couponjunk@gmail.com and you can continue from there...

So from next time when u register, which requires your email, or when you post a contact email on your website. You can create a filter and manage these emails to be automatically archived, deleted, etc...

3. The dot Sign (.) in your Gmail address
For example you have an email address: ravi@gmail.com, then

• ravi@gmail.com = r.a.v.i@gmail.com = ra.vi@gmail.com = r.av.i@gmail.com

Gmail ignores periods (.) as characters in email addresses. 

jQuery: Disable backgroud scrolling when simplemodal modal box is opened.

When using jQuery simplemodal, when the modal box is box is opened , following is one way to disable the scrolling in the background.

We change the css overflow property of the background in the onShow and onClose functions..

Example:

$("#sample").modal({  
      maxWidth:800, minHeight:800,  
       onShow: function(dialog) {  
                 $("html,body").css("overflow","hidden");  
                 //YOur remaining javascript...  
            },  
       onClose: function(dialog) {  
                 $("html,body").css("overflow","auto");  
                 $.modal.close();  
            }  
 }); 

CakePHP: Update model after changing database

After changes are made in the Database, to see the changes updated or reflect to the cakephp models, do the following

1. Delete all the temporary model files from app/tmp/cache/models/*.
2. In app/Config/core.php, change the debug value from 0 to 3, load your app in browser and again change it from 3 to 0 

Run Internet Explorer 7, 8, and 9 in Mac OS X

Source: http://osxdaily.com/2011/09/04/internet-explorer-for-mac-ie7-ie8-ie-9-free/

Following is the post from osxdaily.com

Notes: the admin password for all of the IE VMs is “Password1″ without the quotes. This has been tested and confirmed to work with Mac OS X 10.7 Lion and Mac OS X 10.6 Snow Leopard.

1. Download & Install VirtualBox – Download Now (direct .dmg download link) – visit VirtualBox Downloads page
2. Launch the Terminal (located in /Applications/Utilities/)
3. Decide which versions of Internet Explorer you want to download and install – each version of Internet Explorer is contained within a separate virtual machine that runs within VirtualBox. In other words, if you want to run Internet Explorer 7, 8, and 9, you will need to download three separate VM’s, which may take a while so keep that in mind. Select the text below and copy it:

• Install ALL versions of Internet Explorer: IE7, IE 8, and IE 9

curl -s https://raw.github.com/xdissent/ievms/master/ievms.sh | bash

• Install Internet Explorer 7 Only

curl -s https://raw.github.com/xdissent/ievms/master/ievms.sh | IEVMS_VERSIONS="7" bash

• Install Internet Explorer 8 Only

curl -s https://raw.github.com/xdissent/ievms/master/ievms.sh | IEVMS_VERSIONS="8" bash

• Install Internet Explorer 9 Only

curl -s https://raw.github.com/xdissent/ievms/master/ievms.sh | IEVMS_VERSIONS="9" bash
4. Copy and paste the selected command from above into the Terminal and hit return, this will start the download and conversion process. How long this takes depends on your internet connection and how many versions of Internet Explorer you chose to install
5. Launch VirtualBox and boot Windows & Internet Explorer – select the virtual machine corresponding to the version of Internet Explorer you intend to use: IE7, IE8, IE9, then click on the “Start” button to boot that Windows machine with that version of Internet Explorer.

Remember that the default Windows admin password is “Password1″, it’s also the password hint within the VM should you forget it. 

That’s really all there is to it. These commands are part of the ievsms script from xdissent and it manages the entire download, conversion, and installation procedure, it doesn’t get much easier.

VM Snapshots Circumvent Microsofts 30 Day Limitation
The other great thing about this method is that it circumvents Microsofts 30 day limitation by utilizing snapshots, a feature built into VirtualBox. This preserves the original Windows VM state and allows you to continuously use the IE virtual machine without any time limitation simply by reverting to the original snapshot once the 30 day lock occurs.

To use a snapshot after the 30 day Windows expiration, just open VirtualBox, select the IE VM, and click on the “Snapshots” button. From here you can boot from the original snapshot that was created and use IE again for another 30 days. You can do this indefinitely, effectively having a clean IE test environment forever.

SVN: Moving subversion repository from one server to another server

This works between any kind of servers windows or linux...

Step 1: Backup / create a dump of old repository

svnadmin dump /path/to/repository > repo_name.dump 

Step 2: Create a new repository on the new server

svnadmin create /path/to/repository 

Step 3: Import the the old repository

svnadmin load /path/to/repository < repo_name.dump

Matlab: Sort 2D array with respect to one column

sort function in Matlab, sorts matrix columns independently.
But,
B = sortrows(A, column) sorts the matrix based on the columns specified in the vector column. 

Example:


>> A = [2 10; -1 20; 5 40]

A =

     2    10
    -1    50
     5    15

>> sortrows(A, 1)

ans =

    -1    50
     2    10
     5    15

>> sortrows(A, 2)

ans =

     2    10
    -1    50
     5    15

MATLAB: String tokenizer, string split

myStr = 'one_two_three';
pieces = regexp(myStr , '_', 'split')

%Output would be an pieces array with 3 elements.
pieces =

    'one'    'two'    'three'

Academy Excellence Award 2011 to Dr. P Seetharamaiah

The Prime Minister, Dr. Manmohan Singh presenting the Academy Excellence Award 2011 to Dr. P Seetharamaiah, at the DRDO Awards presentation ceremony, in New Delhi on July 31, 2012. The Defence Minister, Shri A. K. Antony is also seen.

Generate 2048 CSR using openssl

openssl req -new -nodes -subj "/C=US/ST=Florida/L=Tampa/O=My Org Pvt Limited/OU=Some Dept/CN=abc.xyz.com" -keyout private.txt -out certreq.txt -newkey rsa:2048

Minify/compress JavaScript, CSS compressor

Quick and easy way to minify/compress JavaScript and CSS

• JS Compress and Obfuscate : http://www.minifyjs.com/javascript-obfuscator/
• JS Compress only: http://www.minifyjs.com/javascript-compressor/ 
• CSS compressor : http://www.minifycss.com/css-compressor/

UNIX: Bash Keyboard shortcuts

Very useful neat shortcuts for traversing in Bash command line :)

Command Editing Shortcuts

• Ctrl + a – go to the start of the command line
• Ctrl + e – go to the end of the command line
• Ctrl + k – delete from cursor to the end of the command line
• Ctrl + u – delete from cursor to the start of the command line
• Ctrl + w – delete from cursor to start of word (i.e. delete backwards one word)
• Ctrl + y – paste word or text that was cut using one of the deletion shortcuts (such as the one above) after the cursor
• Ctrl + xx – move between start of command line and current cursor position (and back again)
• Alt + b – move backward one word (or go to start of word the cursor is currently on)
• Alt + f – move forward one word (or go to end of word the cursor is currently on)
• Alt + d – delete to end of word starting at cursor (whole word if cursor is at the beginning of word)
• Alt + c – capitalize to end of word starting at cursor (whole word if cursor is at the beginning of word)
• Alt + u – make uppercase from cursor to end of word
• Alt + l – make lowercase from cursor to end of word
• Alt + t – swap current word with previous
• Ctrl + f – move forward one character
• Ctrl + b – move backward one character
• Ctrl + d – delete character under the cursor
• Ctrl + h – delete character before the cursor
• Ctrl + t – swap character under cursor with the previous one

Command Recall Shortcuts

• Ctrl + r – search the history backwards
• Ctrl + g – escape from history searching mode
• Ctrl + p – previous command in history (i.e. walk back through the command history)
• Ctrl + n – next command in history (i.e. walk forward through the command history)
• Alt + . – use the last word of the previous command

Command Control Shortcuts

• Ctrl + l – clear the screen
• Ctrl + s – stops the output to the screen (for long running verbose command)
• Ctrl + q – allow output to the screen (if previously stopped using command above)
• Ctrl + c – terminate the command
• Ctrl + z – suspend/stop the command

Bash Bang (!) Commands

• !! - run last command
• !blah – run the most recent command that starts with ‘blah’ (e.g. !ls)
• !blah:p – print out the command that !blah would run (also adds it as the latest command in the command history)
• !$ – the last word of the previous command (same as Alt + .)
• !$:p – print out the word that !$ would substitute
• !* – the previous command except for the last word (e.g. if you type ‘find some_file.txt /‘, then !* would give you ‘find some_file.txt‘)
• !*:p – print out what !* would substitute

Source: http://www.skorks.com/2009/09/bash-shortcuts-for-maximum-productivity/ http://www.ice2o.com/bash_quick_ref.html

jQuery: Select a radio button by name and value

Using jQuery, if you want to select a specific radio button based on name and value

 $(':radio[name="radioBtnName"][value="radioValue"]');  

Example:

<div id="radioGrps">  
   <div id="setOne">  
       <input type="radio" name="orange" value="5" />  
       <input type="radio" name="orange" value="10" checked />  
       <input type="radio" name="orange" value="20" />  
   </div>  
   <div id="setTwo">  
      <input type="radio" name="peach" value="10" />  
      <input type="radio" name="peach" value="15" />  
      <input type="radio" name="peach" value="20" checked />  
  </div>  
 </div>  

In the above example, if you want to select radio button in div#setOne with value 10, then

$('#setOne :radio[name="orange"][value="10"]');  
 or  
 $(':radio[name="orange"][value="10"]');  
 //to make it checked  
 $(':radio[name="orange"][value="10"]').attr('checked', 'checked');