Mohamed Aslam http://mohamedaslam.com Freelance Web Developer, Rubyist, Visual Designer and Blogger based on Kandy, Sri Lanka. Mon, 14 Sep 2009 22:58:25 +0000 http://wordpress.org/?v=2.8.5 en hourly 1 How to uninstall / remove Ruby Gems (on Ubuntu)? http://feedproxy.google.com/~r/MohamedAslam/~3/p6tPEyrunSA/ http://mohamedaslam.com/how-to-uninstall-remove-ruby-gems/#comments Wed, 22 Jul 2009 11:44:34 +0000 Aslam http://mohamedaslam.com/?p=187 Uninstall Ruby Gems

First we need to find out the exact location that the Ruby installs it’s libraries. In the terminal program, You can type the following command to find out the exact location.

ruby -e 'puts $:'

You’ll get list of paths. This is the output that I got in my machine.

/usr/local/lib/site_ruby/1.8
/usr/local/lib/site_ruby/1.8/i486-linux
/usr/local/lib/site_ruby/1.8/i386-linux
/usr/local/lib/site_ruby
/usr/lib/ruby/vendor_ruby/1.8
/usr/lib/ruby/vendor_ruby/1.8/i486-linux
/usr/lib/ruby/vendor_ruby
/usr/lib/ruby/1.8
/usr/lib/ruby/1.8/i486-linux
/usr/lib/ruby/1.8/i386-linux
.

Next we need to change our directory in to /usr/local/lib/site_ruby/1.8 and type following command to list the files.

ls -la
drwxr-xr-x 5 root root   4096 2009-07-15 12:15 .
drwxr-xr-x 3 root root   4096 2009-07-15 12:14 ..
-rw-r--r-- 1 root root   1415 2009-07-15 12:15 gauntlet_rubygems.rb
drwxrwsr-x 2 root staff  4096 2009-07-15 12:14 i486-linux
drwxr-xr-x 2 root root   4096 2009-07-15 12:15 rbconfig
drwxr-xr-x 6 root root   4096 2009-07-15 12:15 rubygems
-rw-r--r-- 1 root root  29116 2009-07-15 12:15 rubygems.rb
-rw-r--r-- 1 root root    268 2009-07-15 12:15 ubygems.rb

Now we are ready to remove the gems. Type,

rm -r rubygems.rb ubygems.rb rubygems

If you wish to remove all gems installed in your computer, first find out the location by executing following commands

 which gem gem1.8

Next you can remove them by using following commands. That’s it!

rm -r /usr/local/bin/gem
rm -r /usr/bin/gem1.8

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]]> http://mohamedaslam.com/how-to-uninstall-remove-ruby-gems/feed/ 3 http://mohamedaslam.com/how-to-uninstall-remove-ruby-gems/ Screencast: How to Install Ruby on Rails on Ubuntu? http://feedproxy.google.com/~r/MohamedAslam/~3/Jh-gVnPVk0E/ http://mohamedaslam.com/screencast-how-to-install-ruby-on-rails-on-ubuntu/#comments Mon, 22 Jun 2009 20:08:48 +0000 Aslam http://mohamedaslam.com/?p=170 Screencast: How to Install Ruby on Rails on Ubuntu?

This screencast will teach you to set up the Ruby on Rails development environment on Ubuntu.

Don’t forget to toggle the full screen button on the player.

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]]> http://mohamedaslam.com/screencast-how-to-install-ruby-on-rails-on-ubuntu/feed/ 11 http://mohamedaslam.com/screencast-how-to-install-ruby-on-rails-on-ubuntu/ How to setup PHP for IIS 7 server on Vista? http://feedproxy.google.com/~r/MohamedAslam/~3/qzR24jvPi6U/ http://mohamedaslam.com/how-to-setup-php-for-iis-7-server-on-vista/#comments Fri, 22 May 2009 19:43:34 +0000 Aslam http://mohamedaslam.com/?p=147 php-iis

Are you a .NET developer? Looking forward to learn or switch to PHP (which is quit impossible. May be I’m dreaming…! :D . However if you are, you are mostly welcome to the word of light..! I mean LAMP) You can setup PHP in IIS server. I’ll walk you through step by step. So, are you ready for the journey..? Let’s go..

I’m writing this tutorial to understand even by a newbie. So bare with me for some very basics stuffs.

First of all you need to install PHP to your computer. You can download PHP at

http://www.php.net/downloads.php

PHP installation is pretty straight forward. I believe you can manage it.

Next you need to ensure whether the IIS server installed in your computer. Regular windows installation won’t install IIS server. So, to test whether it is there or not, right click on My Computer icon and select Manage. Then expand the Services and Application node.

iisphp1

If you don’t see Internet information Service, that means that you should install IIS server manually. It’s pretty simple.

Go to Control Panel and select Classic View in the left pane. Then double click on the Programs and Features icon. Now you’ll have a list of option in your right pane. Select Turn Windows features on or off.

iisphp2

Click the Internet Information Server check box and expand the node.

iisphp3

Again expand the World Wide Web Services , Application Development Features and click the ISAPI Extensions. Then click OK. It will take several minutes to installation.

iisphp4

Now you can check whether the server working properly. Open up your internet browser and type http://localhost/ . You’ll get a page as follows

iisphp5

Now you need to configure the server for PHP. Go to the Computer Management window again (Right click on My Computer and select Manage) and expand the Services and Applications node and click the Internet Information Services link. Then in the connection area select Default Web Site.

iisphp6

Click on Handler Mappings.

iisphp7

On the right side of the window, click on “Add Script Map…”

iisphp8

Once you clicked a pop up window will appear. Fill up the fields with following values.

iisphp9

Click OK. Then a Dialog box will appear. Say Yes! to that. Thats it!

Now you need to check whether the server working with PHP. Open up your favorite text editor and type

1
2
3
<?php
    phpinfo();
?>

Save the file as phpinfo.php under “C:\inetpub\wwwroot”.

Then open up your browser and navigate to http://localhost/phpinfo.php
If you get following page.., you are done..!

PHP info page

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]]> http://mohamedaslam.com/how-to-setup-php-for-iis-7-server-on-vista/feed/ 0 http://mohamedaslam.com/how-to-setup-php-for-iis-7-server-on-vista/ How to Install Ruby on Rails on Ubuntu 9.04 (Jaunty Jackalope) http://feedproxy.google.com/~r/MohamedAslam/~3/ac8eby0emcI/ http://mohamedaslam.com/install-ruby-on-rails-on-ubuntu-904-jaunty-jacklope/#comments Tue, 28 Apr 2009 06:52:09 +0000 Aslam http://mohamedaslam.com/?p=23 install_ror_on_ubuntu
Few of my friends have started to learn Ruby on Rails recently. According to my point of view, Windows is not a suitable and enjoyable  environment for RoR development. So, I recommended them to start with Ubuntu. Most of them have installed Ubuntu 8.10 and 9.04. So, I wish to write a small guide to setup the Ruby on Rails environment on Ubuntu 8.10 and 9.04

If you like to watch the screencast of this title, rather than reading whole post, you can find my screencast here.

http://mohamedaslam.com/screencast-how-to-install-ruby-on-rails-on-ubuntu/

Ruby installation

First we need to update the repositories.

sudo apt-get update

It’s always a best practice to upgrade the system.

sudo apt-get dist-upgrade

This installation will take few minutes and also require approximately 100 MB disk space.

Now that we are up to date. Let’s start install the RoR recipices. We need following Rails prerequisites.

ruby = An interpreter of object-oriented scripting language Ruby
ri = Ruby Interactive reference
rdoc = Generate documentation from ruby source files
irb = Interactive Ruby

sudo apt-get install ruby ri rdoc irb libopenssl-ruby ruby-dev

Ruby Gem installation

Next we need to install the Ruby gem package manager. You can download the latest Ruby gems by following link.

http://rubyforge.org/projects/rubygems/

Download and extract the files. (By the time I’m writing this tutorial the latest version is 1.3.1)

tar xvzf  rubygems-1.3.1.tgz
cd rubygems-1.3.1
sudo ruby setup.rb

Once it’s done you can delete the .tgz file and rubygems directory.

cd ..
rm -r rubygems-1.3.1 rubygems-1.3.1.tgz

Next we need to create a set of simlinks. Otherwise it will be a tedious task to type commands with the version (1.8).  For an example if we need to call the gem command we’ve to type gem1.8. I don’t prefer that. Hope you too. So, let’s create the necessary simlinks.

sudo ln -s /usr/bin/gem1.8 /usr/local/bin/gem
sudo ln -s /usr/bin/ruby1.8 /usr/local/bin/ruby
sudo ln -s /usr/bin/rdoc1.8 /usr/local/bin/rdoc
sudo ln -s /usr/bin/ri1.8 /usr/local/bin/ri
sudo ln -s /usr/bin/irb1.8 /usr/local/bin/irb

Rails Installation

Now we can install Rails using gem.

sudo gem install rails

Server Installation

Rails by default comes with the WEBrick server. But most Rails developers prefer the Mongrel server. If you satisfied with WEBrick you can skip this step, else type the following command to install Mongrel server.

sudo gem install mongrel

If you got any error while installing the Mongrel server, install the ruby-dev / ruby1.8-dev and try again.

sudo apt-get install ruby-dev

Database Installation

Rails 2.3 shipped with  SQLite3 as it’s default database instead of  MySQL. You can install SQLite3 libraries by following commands.

 sudo apt-get install sqlite3 swig libsqlite3-ruby libsqlite3-dev
sudo gem install sqlite3-ruby

If you prefer MySQL,

sudo apt-get install mysql-client libmysqlclient15-dev
sudo gem install mysql

Create Ruby on Rails App

Now that we have completed everything successfully. You can create your new Ruby on Rail applicaion by following command.

rails test_app

If you need MySQL supported applicaion you need to specify as follows

 rails test_app -d mysql

Run the app

cd test_app
script/server

navigate you browser to http://localhost:3000

ubu

Wola.. you have done it…!

Happy Rails…!

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]]> http://mohamedaslam.com/install-ruby-on-rails-on-ubuntu-904-jaunty-jacklope/feed/ 24 http://mohamedaslam.com/install-ruby-on-rails-on-ubuntu-904-jaunty-jacklope/ How to fix Apache – “Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for ServerName” Error on Ubuntu http://feedproxy.google.com/~r/MohamedAslam/~3/ZkVbZKO9X4k/ http://mohamedaslam.com/how-to-fix-apache-could-not-reliably-determine-the-servers-fully-qualified-domain-name-using-127011-for-servername-error-on-ubuntu/#comments Fri, 17 Apr 2009 04:54:39 +0000 Aslam http://mohamedaslam.com/?p=66 ubuntu_apache_error
You might probably faced the same following error while you were restarting the Apache server on Ubuntu.

aslam@aslam:~$ sudo /etc/init.d/apache2 restart
* Restarting web server apache2                                                apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
... waiting apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName

To fix that problem, you need to edit the httpd.conf file. Open the terminal and type,

sudo gedit /etc/apache2/httpd.conf

Now, simply add the follwing line to the httpd.conf file.

ServerName localhost

Save the file and exit from gEdit.

Finally restart the server.

sudo /etc/init.d/apache2 restart

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