I have lately moved my ruby to another framework (MetaSploit in specific) from Ruby on Rails. Dont mistake me, i am still Ruby on rails fan. As i set up my backtrack 5, the system sometimes hibernate and when i want to resume the system could not hence forcing me ...
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This table shows a brief description in differences of IPv4 and IPv6. Category IPv4 IPv6 Address length 32 bits 128 bits Notation style Four sets of three digits Eight sets of four digits separated by a dot Compression If all three digits are zero, single zero is used If all four digits are zero, a double colon is used Types of addresses Public, ...
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In ruby, there are so many ways of achieving the same functionality using different ways. In this small article I would like to show different method of defining class Methods in ruby First way is getting into class’s scope and defining a self method the as follows: class HisClass def ...
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This is an error that is always caused by a gem in your Gemfile.lock. multi_json-1.3.1 is just example here as it most occuring in my system. Solution 1. Delete the Gemfile.lock and the following command: bundle install Solution 2. Open Your Gemfile.lock with your text editor. Find your specific gem and in this case multi_json-1.3.1. The Format of ...
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This a just simple demonstration that bothers since most of other rails migration you doesnt need to edit the migration file. It has been explained clearly at StackOverflow. For my case scenario i have a users table with password column. I want to rename the column to hashed_password. Step 1: Write the rails migration ...
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This is a simple workaround regarding an error which happened to me today when running db migration in Rails 3. I have Rails 3.2.2 and MySQL 0.3.11. I was trying to run bundle exec rake db:migrate to create a table in database. I got this error rake aborted! Can't connect to MySQL server on ...
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Most people that are new to Apache spend most time in a war between Skype, microsoft HTTP/2.0 service and Apache of which all compete for port 80. I will spend less than two minutes showing you how the war can end. Fortunately its very easy to configure Skype to use different port. Live ...
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This tip is on how to use sqlcmd to get all databases in your SQL server. Note that you have to include sqlcmd exe in environment variables of windows system. The format of the tip is like sqlcmd -s <db server or instance> -q "exec sp_databases" Open your command prompt and paste ...
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As such, as DBA\Project Manager you have the ability work from the bottom up to make changes which can have a ripple affect across the organization. You make ask how is that possible, I am totally overwhelmed and I need to keep the boat afloat, but I want to be ...
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As a DBA I will like to point some of the good recovery strategies of database recovery and their benefits. Remember your backup is never good unless proven good. A good practice is: A verification process that enables you to ensure your recovery strategy meets your business requirements. Once you have ...
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