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Posts Tagged ‘ruby’

Linux did 1234567890 seconds past 1970′

February 14th, 2009 Comments off

That’s not so important for our development and live,  but as always interesting dates get our attention, todays date will have interesting representation as seconds since start of 1970 year.

1234567890, that showed to me when I have entered the following command and waited a while before  2009-02-14 00:20

while [ $((1234567890 - $(date +%s))) -ge 0 ]; do sleep 1s; clear; date +%s; done

Of course You need to know that Linux is counting time as seconds since begun of year 1970.

Thanks to polish linux blip community for remembering me this very important fact.

Quick update from polish rails blip community, the date for ruby was the same when converting to integer:

irb

Time.now.to_i

Good to hear that not only Linux is affected by this issue.

Categories: Linux Tags: , , ,

Preparing Ruby on Rails environment – netbeans

January 25th, 2009 4 comments

In previous steps we have configured ruby and apache, now time to get development environment, there is wide range of tools but we will use Netbeans as it is … quite good.

So on beginning please download Netbeans, please go to it’s download site and get “C/C++” or “PHP” version – they are smaller from the ruby version, we need to update the environment after download so we would download many components again.

After download run the Netbeans installation, it is very simple so just follow the on screen instructions. When Netbeans is installed please run it and go to Tools Menu -> Plugins, there select available plugins and select:

  • Ruby and Rails
  • Ruby Extra Hints
  • Extra Ruby Color Themes

Do not install “Glasfish” or “JRuby” this is needed only for JRuby development which is not production ready, as some people think.

Additionally to installation You can perform update of the installed plugins in the Updates tab, after update and installation Netbeans will ask You to do restart to activate newly installed plugins, please follow it’s instructions.

When we have installed required plugins we can check that Netbeans sees our ruby installation, go to Tools Menu -> Ruby Platforms, here you will see yours ruby installations and it’s configuration, If you do not see any platform go threw the wizard under button Add Platform.

This is the development environmnet, in next part we will start a new project with it.

Categories: Development, Linux Tags: , , ,

Preparing Ruby on Rails environment – apache, ruby

January 24th, 2009 Comments off

In previous article I have described how to setup postgress for development, now is time to continue with the environment. At the beginning we need:

  • ruby as it is base for rails,
  • apache For serving pages,
  • java + netbeans for development.

So installation of required system packages:

emerge -qDNu ruby rubygems apache jdk

/etc/init.d/apache2 start

Install ruby gems that will be needed shortly:

UPDATE: 2009.01.26 added postgres

gem install rails capistrano capistrano-ext passenger postgres

Now we need to integrate passenger into apache – please run:

passenger-install-apache2-module

UPDATED 2009-02-06:

The installation should go without nay problems (If You followed all instructions), at the end You will be asked to modify apache configuration file – few Lines of the output – starting with LoadModule, PassengerRoot and PassengerRuby – should be copied to new apache configuration file, easiest way is to use this commands:

echo “LoadModule passenger_module /usr/lib64/ruby/gems/1.8/gems/passenger-2.0.6/ext/apache2/mod_passenger.so” > /etc/apache2/vhosts.d/01_passenger.conf

echo “PassengerRoot /usr/lib64/ruby/gems/1.8/gems/passenger-2.0.6″ >> /etc/apache2/vhosts.d/01_passenger.conf

echo “PassengerRuby /usr/bin/ruby18″ >> /etc/apache2/vhosts.d/01_passenger.conf

Some of the lines may differ from the output form yours passenger so please use Yours as it is better for you.

In next part we will continue with development environment.

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