Remove Ubuntu 10.04 in Dual boot with Windows 7

Basic hurdles:
1. When you install Ubuntu alongside of Windows 7 then the GRUB will be over-written bu Ubuntu. So if you try to remove the Ubuntu Installation then you will lose the GRUB

errors in ubuntu while doing rake

sudo: rake: command not found


To get around with this error do the following: which is making a link to rake in /usr/local/bin


$ sudo ln -s `which rake` /usr/local/bin/


and you are done!

Installing rails 3.1.1 in ubuntu 10.04

Cheat Sheet for Ruby

I am jumping directly into obscure world of Ruby. Here is a cheat sheet for erb( embedded ruby). Hope it helps.

http://cheat.errtheblog.com/s/erb/

Commands to untar different types of files in Ubuntu

I had thought that simple commands which we often use might be lost somewhere deep in our ocean of thoughts.

1. Type at the command prompt
   

   $ tar xvzf fileName.tar.gz - for uncompress a gzip tar file (.tgz or .tar.gz)

   $ tar xvjf fileName.tar.bz2 - for uncompress a bzip2 tar file (.tbz or .tar.bz2)

   $ tar xvf fileName.tar - for uncompressed tar file (.tar)

   • x = eXtract, this indicated an extraction ( c = create to create )
   • v = verbose (optional) the files with relative locations will be displayed.
   • z = gzip-ped; j = bzip2-zipped
   • f = from/to file ... (what is next after the f is the archive file)




2. The files will be extracted in the current folder (most of the times in a folder with the name 'fileName'). 

Note: I have tested these in ubuntu 10.04 and I hope these commands work on other Linux OS's too.

How to convert a Visual Studio 2010 project to Visual Studio 2008

The conversion of the project created in VS2008 to VS2010 can be done when the Project is opened by VS2010 but the problem comes when the user wants to open the project created using VS2010 on VS2008. To solve this, follow the below steps:

1. Open the .sln file corresponding to the Project to be converted with Notepad

2. In the file opened, locate the following line: Microsoft Visual Studio Solution File, Format Version 11.00

3. Replace 11.00 with 10.00

4. Locate the following line: # Visual Studio 10

5. Replace 2010 with 2008

6. Save the File

7. Delete the .cache files existing in the following paths:

    ~/obj/debug

    ~/obj/release

8. Open the project with Visual Studio 2008 & build the project.