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Archives: August 2009

August 29, 2009

installing mysql bindings for ruby

by viggy — Categories: Uncategorized — Tags: , , , , — Leave a comment

Courtsey: Daniel Lorch

To install mysql bindings for ruby, use this command
#gem install mysql

You might get the following error:

“extconf.rb:1:in `require’: no such file to load — mkmf (LoadError)”

This probably means that you forgot to install the ruby1.8-dev package. Just do an apt-get install ruby1.8-dev to fix this.

Again after this you might this error:

“Could not create Makefile due to some reason [..] Check the mkmf.log file for more details. [..]”

You should do what the error message tells you: check the mkmf.log! Search for this file using find /usr/lib/ruby/gems/1.8/gems/ -name mkmf.log. Usually, this error message appears because you forgot to install the -dev package for the extension you were trying to install. So if you wanted to install the mysql gem, you probably forgot to install the libmysqlclient14-dev first. Do an apt-cache search | grep dev to find the appropriate packages.

Courtsey: Simon Josefsson Datakonsult

RAILS_ENV=”production”

(in /home/redmine/redmine)
rake aborted!
No such file or directory – /tmp/mysql.sock

(See full trace by running task with –trace)

The problem is that you need the Ruby MySQL wrappers. This isn’t really clear from the error message. Install it using:

# apt-get install libmysql-ruby

August 24, 2009

wget to rescue

by viggy — Categories: Uncategorized — Tags: , , — Leave a comment

How often has your download stopped after 99% of download while downloading from Firefox just because your internet connection was lost for a moment or because there was no space in your partition? And you must have sweared in anger but restarted the whole download. Well you dont have to do it any longer as wget is there to rescue your downloads.

Everyone must have known wget’s feature to download a partially downloaded file. Well you will be shocked to know that wget can download the partially downloaded file even if it was downloaded using Firefox.

Firefox downloaded usually downloads the file in .part. So all you have to do is rename the .part file to the actual file name.
Then run the command:
wget -c “link of the server from which it was downloading”

Thats it and wget will resume your download as if your internet connection was not lost at all.

August 16, 2009

After windows reinstallation, Linux no longer boots!, How do I restore GRUB?, I have lost my GRUB, how do I find it again?, I have reinstalled Windows

by viggy — Categories: Uncategorized — Tags: , , — Leave a comment

This solution is helpful when you have a LIVE CD.
Courtsey: Thinkdigit forum.
1. Boot from a Live CD, like Ubuntu Live CD or similar.

2. Open a Terminal. Go SuperUser (that is, type “su”). Enter root passwords as necessary. (in kanotix you need to set the passwd for root yourself. Use:
$ passwd root

3. Type “grub” which makes a GRUB prompt appear.

4. Type “find /boot/grub/stage1”. You’ll get a response like “(hd0)” or in my case “(hd0,3)”. Use whatever your computer spits out for the following lines.

5. Type “root (hd0,3)”.

6. Type “setup (hd0,3)”. This is key. Other instructions say to use “(hd0)”, and that’s fine if you want to write GRUB to the MBR. If you want to write it to your linux root partition, then you want the number after the comma, such as “(hd0,3)”.

7. Type “quit”.

8. Restart the system. Remove the bootable CD.

Source: http://ubuntuforums.org/showthread.php?t=42030

If the Step 3 doesn’t work, then instead of typing “su” and then “grub” type “sudo grub”. Then continue with Step 4.

Also if GRUB was your main boot loader then use (hd0) in Step 6, otherwise (hd0,x), where ‘x’ is your Linux Boot Partition (in case you are using some other boot loader, like Vista’s Boot Loader for e.g.).

But if you dont have a LIVE CD, then SUPERGRUB is a perfect solution. I have not used it myself, so cant give any good review about it. However you can find more details for your solution here.

August 15, 2009

Check List of essential features of websites for small businesses

by viggy — Categories: Uncategorized — Tags: , , , , — Leave a comment

A well written article on this subject can be found here. This is just a check–list i created after going through that web-site.
1) Basic:

  1. Thier Location
  2. Their Hours of Operation
  3. Contact Information

2) About:

  1. Business of the company
  2. Profiles of founder and other importent staff of the company.

3) Offering: Products and services

4) Portfolio: Examples of ongoing projects or previous commitments

5) NEWS Room: Articles and Accolades

6) Links: Other presence of the company on the web

7) Photo Gallery:

8) Calendar: To inform about the upcoming events

9) Blog:

10) Contact:

11) Send to Friend & share:

12) Printer Friendly Pages:

13) Email Signup:

14) E-commerce:

15) Donations:

August 2, 2009

renaissance

by viggy — Categories: Uncategorized — Tags: — Leave a comment

Finally I have made my blog public again. Since I had made it private, I found no reasons to write a personal blog. Somehow I always feel that when I write a blog, it is followed by many people and they like reading it. Hope someday this will become true. :). Anyways let me update you with whats happened in my life recently.
Well I am no longer in college. Sadly my college days are over. My four years of vacation is over. It was a difficult time as I was going away from all my friends and more importantly the environment that I had become so accustomed to. However change is the rule of life.
And the change could not have been better. I have now joined a company started by one of our own seniors. It is more of fun then work. It is a very informal company and hence it could not have suited me better. Just yesterday Dabba was mentioning that it was the perfect extension after 4 years of vacation in Durgapur. What is more important to me is I have finally found programming and computer science interesting. Now I spend most of my time gaining more and more knowledge about linux and programming and it is fun. My mind always is filled with things that I am required to do and I am getting more and more confident about programming. So at present my life is going on the right track even after I wasted 4 years without getting any much knowledge. The only useful thing academically I had done during college was used linux. That was again thanks to Dabba. At present I work on perl and javascript. Please forgive me if i get any technical in this blog as nowadays I am more into it then think philosophically. But whenever I get any crazy idea or a feeling, I will mention it over here and keep most of the technical stuff to my other blog which I have started.