Ubuntu

Everything about Ubuntu - installation, support, administration, reviews, configuration, downloads, drivers

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| 2 min read
Ruby on Rails, a web application framework. Don't confused this with Ruby. Because Ruby is object oriented, reflective, dynamic programming language. It is quite hard. And the Rails is the MVC (Model-View-Controller)framework. It's installation in Ubuntu can be done in few commands and steps. Now, select the version of Ruby, you want to install on your computer.
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| 3 min read
In Drupal there is a lot of interesting modules. One of interesting module is the quiz.module. It is a framework for create interactive quizzes for your visitors. Also it allows for the creation of questions of different types, and to collect the questions into quizzes.
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| 3 min read
Recently, we came across an error - "Forbidden You don't have permission to access / on this server" while trying to run a new virtual host on our Ubuntu 14.04 machine. The first step to troubleshoot this type of issue would be to check at your Apache error logs as this specific type status can be thrown due to many reasons. Since we have Apache 2.4.7 installed on our system, each virtual host file should have the .conf extension. We corrected the extension also. But the issue was still there. However this information lead us to think on it further and finally we found the reason for the issue.
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| 2 min read
Elance tracker helps individuals to track the time they have worked and this is automatically populates to work time sheet in elance. And this time sheet is automatically submitted to the client. So if you are working on elance projects some times it is necessary to track time through elance tracker. If incase you came up an error "Error: Dependency is not satisfiable: adobeair (>= 1:2.6.0.0) in Ubuntu 12.04" while installing Elance tracker, you may follow the below steps to resolve it.
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| 2 min read
The following is the shell script that will shutdown all computers in the network. This script will be really help full for system administrators who need not want to check all systems, whether all the systems in the office has been shutdown properly when the employees leave the office. The script will check all the active ips in the network and write the those ips to a file. It also login to each system and execute the shutdown command. The things that are to be done before running the script is to 'Make sure your public-key has been added in the authorized_keys file in .ssh folder of root'. This allows the script to login to each system by the method of public-key authentication rather than prompting for password. And also the 'StrictHostKeyChecking no' will avoid all prompts during ssh.
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| 4 min read
Quite often we feel the need for comparing wages in different countries when one is engaging with a global talent pool. We face this need when we evaluate the costs of setting up a development centre in Australia or when we are discussing with a potential hire who is then based out of India. In such scenarios, purchasing power parity is a useful concept to make wage comparisons across different countries meaningful. It might be a slightly crude approach but it can be useful when you are looking for ball parks or quick evaluations.
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| 3 min read
If you are a GNU Linux user it is very likely that you would already know about the command top that allows you to see the memory and processor usage by each process in your system. However you would see multiple processes for applications like Chromium or Firefox for each of the tabs that are open in them. Similarly you could see apache run multiple processes if you have it configured to do so. What if you want to see the total memory usage for each application and not by each process. Here is a small bash script to help you do the same.
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| 2 min read
If you have been using Skype on Ubuntu and you have been unable to login to Skype recently then it is only that the old version of Skype for Linux is no longer supported on Skype servers. You can solve this problem by purging the existing skype installation on your system and then re-installing the latest version of Skype from skype.com Do the following to fix this problem
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| 2 min read
Apt-cacher-ng can be defined as an apt proxy which caches the packages which you download locally on your computer. Consider you are using a network of computers and you have to install a package on each system then it will be great to configure an apt-cacher-ng on any system in your network so that it will cache the packages once they have been downloaded. Read on to know how to configure Apt-cacher-ng server in Ubuntu
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| 2 min read
Sometimes after ubuntu installation we may find certain notification box saying "System program problem detected". This is because the notification is enabled in the apport file in the system. You can enable/disable this notification. All you have to do is to edit the /etc/default/apport file and change the enable value to 0 to disable the notification and if you want enable this change this back. You can follow the below steps to disable this notification.