Off Canvas Layouts

Off Canvas layout is used by many apps for example facebook and other applications.


http://jasonweaver.name/lab/offcanvas/

Learning a new Programming Language

Learning a new programming language :)

http://blog.discourse.org/wp-uploads/2013/04/cat-enters-bathtub.gif

SSH

If you are using VPS with root access you need to connect to your server often. If already have a id_rsa.pub file you can use this to authorize your server as well.

cat ~/.ssh/id_rsa.pub

any paste the content in your servers

~/.ssh/authorized_keys

file. You will not be prompted for password again.

If you are using a server often you can add server definition to you ssh config file as well

~/.ssh/config

Add following

Host dev
   HostName dev.example.com
   Port 22000
   User foo

After that you can connect to host with this command

ssh  dev

Openning your local work to internet

You may want to show your work to other people which are not currently sitting near you. You can use localtunnel for that purpose. You can install local tunnel by using the following command. Local tunnel is using node.js therefore you also need to install nodejs first if you donot h

npm install -g localtunnel

After that use

    lt --port 8000

you will see something like this

    your url is: http://gqgh.localtunnel.me

which means that your local application can be accessable now over the internet. be aware that everybody can see your application now.

Thinking in Sphinx

Thinking in Sphinx is a ruby interface for Sphinxsearch engine.


install sphinxsearch

  sudo apt-get install sphinxsearch

install thinking sphinx

  sudo add-apt-repository ppa:dhuggins/cmusphinx
  sudo apt-get update
  sudo apt-get install sphinxsearch

add required gems

  gem 'mysql2'
  gem 'thinking-sphinx'

install

  bundle install

create a file under app/indices/ called _index.rb
add the following

ThinkingSphinx::Index.define :article, :with => :active_record do
  # fields
  indexes title, :sortable => true
  indexes content
  # attributes
  has created_at, updated_at
end

After that you can test your searches in rails console

example search

  Article.search params[:search]

 @articles = Article.search Riddle::Query.escape(params[:search])



Links:

http://pat.github.io/thinking-sphinx/

http://blog.app2technologies.com/basic-thinking-sphinx-setup-in-rails-3.1-or-newer-on-ubuntu-12.04/

How To Install Git on Ubuntu 1204

installing git

If you install git on your server you can easly make release checkouts and deployments. Use following command to install git

sudo apt-get install git-core

git configuration

You can edit git config by using command

sudo vim ~/.gitconfig

you can afterwards add following lines


git config --global user.name "NewUser"
git config --global user.email newuser@example.com

following command will show you available config

git config --list

Initial Server Setup with Ubuntu 12.04

When you first get a fresh server such as a Virtual Server you need to make some configuration on your server. This document guides you some basic configuration steps that will help you to setup a new box.

info any command that you run with sudo will be logged in /var/log/secure directory

step one : root login

when you get a new VS you will get also a username with root privileges. You can login to your box as root by using ssh. but this is not recommended. you can use alternative users to login to your box and use root priviledges after you login. If you install cygwin you can use following commend othwerise you can use putty to connect to your box by using given username and pass.

ssh root@yourserverip

step two : change your password

change your password by the following command 

passwd

go to the next step. you donot need to logout.

step three : create a new user

add a new user by using the following command. it can have any arbitrary name 

adduser mynewusername

after you set the password you donot need to enter any further information about the new user. you can live all the lines black if you wish.

step four  : root privileges

until now only root user has the root privileges. edit sudo configuration by using the following command 

visudo

find selection called user privilege sepecification. it will look like this : 

# User privilege specification

root    ALL=(ALL:ALL) ALL

add following line 

mynewusername ALL=(ALL:ALL) ALL

save and exit the file.

done!

If you want you can make root login more restrictive by reading this article 

https://www.digitalocean.com/community/articles/initial-server-setup-with-ubuntu-12-04

install node js on ubuntu 12 or older

sudo apt-get update
sudo apt-get install python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs

How To Install Ruby on Rails on Ubuntu 12.04 LTS with RVM

1. install ruby with rvm

- make an update

sudo apt-get update

- install curl if you do not have

sudo apt-get install curl

- install rvm with curl

\curl -L https://get.rvm.io | bash -s stable
source ~/.rvm/scripts/rvm

- install rvm requirements as well

rvm requirements

2. install ruby

- install

rvm install ruby

- tell to use recently installed version

rvm use ruby --default

3. install rubygems

rvm rubygems current

4. install rails

gem install rails

5. finished

you are instal ruby on rails. you can now use rails command for e.g.

rails new testproject




source: https://www.digitalocean.com/community/articles/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm

Using Vagrant for Development

VAGRANT

- install vagrant project from vagrant website
- install oracle virtual box
- select a vagrant virtual machine from varant.es website
- add your selected virtual box with the following command

vagrant box add ubuntu12_04 http://cloud-images.ubuntu.com/vagrant/precise/current/precise-server-cloudimg-i386-vagrant-disk1.box

- create a project directory
e.g.

mkdir vagrant-project
mkdir mytestproject
cd vagrant-project/mytestproject

- init vagrant

vagrant init ubuntu12_04

- start vagrant

vagrant up

- connect with ssh to vagrant. user name and password is vagrant

ssh 127.0.0.1 -p 2222 -l vagrant

you can now work on your mytestproject directory. It will be available to vagrant virtual machine under the /vagrant directory.

If you change to /vagrant and create a file there it will appear on windows directory as well.

install guest additions. If you have sharefolder problems you need to install guest additions. Go to the http://download.virtualbox.org/virtualbox and find your guest additions file and install it as follows

wget -c \http://download.virtualbox.org/virtualbox/4.3.0/VBoxGuestAdditions_4.3.0.iso -O VBoxGuestAdditions_4.3.0.iso
sudo mount VBoxGuestAdditions_4.3.0.iso -o loop /mnt
sudo sh /mnt/VBoxLinuxAdditions.run --nox11
sudo umont /mnt
rm *.iso

go to host machine and restart your guest by using this command

vagrant reload

You can optionally add a name server to your VM box

sudo vim /etc/resolv.conf

and add opendns domainname servers as follows.

nameserver  208.67.222.222
nameserver 208.67.220.220

IntelliJIDEA shortcuts

• list of usages: Show usages is a very simple but powerful feature. Just press Alt + Ctrl + F7 (Alt + Cmd + F7 for Mac) 
• Paramter Info : The information on parameters required for a particular method is available via Ctrl + P (Cmd+P) shortcut.
• Show implementation: If you want to quickly look at the implementation of a symbol at the caret, you can call the Quick Definition by pressing
  Shift + Ctrl + I (Shift + Cmd + I).
• documentation : Ctrl + Q (Ctrl + J for Mac).
•  last accessed file:  The real time-saver here is action called Recent files via Ctrl + E (Cmd + E for Mac). 
• Methods : The shortest way to do it is to press Ctrl + F12 (Cmd + F12 for Mac) if you click again you see inhrerite members
• Navigate between methods : If you need to jump over the methods quickly just press Alt + ↑↓ 
• Navigate to Class, File and Symbol : This feature is available via Ctrl + N
• Navigate to file : Just like for classes it works for files as well, via Ctrl + Shift + N   
• Navigate to symbol : And finally the most tricky feature is to navigate to a symbol via Ctrl + Alt + Shift + N 
• Navigate to line number via Ctrl + G (Cmd + G for Mac)
• Navigate to declaration via Ctrl + B (Cmd + B for Mac)
• Navigate to super via Ctrl + U (Cmd + U for Mac)
• Navigate to implementations via Ctrl + Alt + B (Alt + Cmd + B for Mac)
• Navigate to the last edit location via Shift + Ctrl + Backspace (Shift + Cmd + Backspace for Mac)
• Navigate to the next error or warning via F2
• Navigate to a related unit test via Shift + Ctrl + T (Shift + Cmd + T for Mac)
• Basic completion  simply press Ctrl + Space shortcut. 
• Smart completion, press Shift + Ctrl + Space.
• Statement completion automatically adds missing parentheses, brackets, braces and adds the necessary formatting. To complete a statement, just press Shift + Ctrl + Enter
• Structural selection: A definite must-know to be even more productive. Structural selection allows you to select expressions based on grammar. By pressing Ctrl + W (Cmd + W for Mac) you keep expanding your selection (starting from the caret). And vice versa, you can shrink it by pressing Shift + Ctrl + W (Shift + Cmd + W for Mac).
• Move the current line of code (or selected block) via Shift + Ctrl + Arrows (Shift + Cmd + Arrows for Mac).
• Duplicate a line of code (or selected block) via Ctrl + D (Cmd + D for Mac)
• Remove a line of code (or selected block) via Ctrl + Y (Cmd + Y for Mac)
• Comment or uncomment a line of code (or selected block) via Ctrl + / (Cmd + / for Mac) and Shift + Ctrl + / (block comment for selected code).
• Optimize imports via Ctrl + O (Cmd + O for Mac).
• Find in the currently opened file via Alt + F3 (F3 to the next match rance and Shift + F3 to the previous match). Or, replace in the currently opened file via Ctrl + R (Cmd + R for Mac).
• Enable/show soft-wraps, disabled by default.
• Paste from stack via Shift + Ctrl + V (Shift + Cmd + V for Mac).
• Navigate between opened tabs via Alt + Arrows (Ctrl + Arrows for Mac).

This article is also very good about intellij idea : http://arhipov.blogspot.de/2011/06/whats-cool-in-intellijidea-part-i.html 

intellij for eclipse developers http://virgo47.wordpress.com/2011/04/10/from-intellij-idea-to-eclipse-4/

Source: http://confluence.jetbrains.com/display/IntelliJIDEA/User+Interface

Using SQL Loader To Import Data

SQL Loader http://bit.ly/16tXiol is Database import utility for Oracle.

You can create SQL Loader Script file by using Oracle SQL Developer http://bit.ly/OjdYXF

If you want to run the SQL Loader script from java you can use ProcessBuilder http://bit.ly/YwKvNT to call external jobs as Java processes in ETL like fashion.

More information can be fount here http://oreilly.com/catalog/orsqlloader/chapter/ch01.html

Insert JQuery to any site.

You run the following javascript code to inject jquery to any website. After that you can run jquery command in the javascript console.

var element1 = document.createElement("script");element1.src = "http://code.jquery.com/jquery-1.10.1.min.js";element1.type="text/javascript";document.getElementsByTagName("head")[0].appendChild(element1);

Clone a website with wget

wget --wait=20 --limit-rate=20K -r -p -U Mozilla http://guides.rubyonrails.org/getting_started.html

How to Free up RAM On Ubuntu variants

First run the following command

free -m

and find out the available memory
kg@kg-netbook-lubuntu:~/opt$ free -m
total used free shared buffers cached
Speicher: 2006 1739 266 0 50 1300
-/+ Puffer/Zwischenspeicher: 389 1616
Auslagerungsdatei: 2035 6 2029

after that run following commands to free up memory
kg@kg-netbook-lubuntu:~/opt$ sync
kg@kg-netbook-lubuntu:~/opt$ sudo -s echo 3 > /proc/sys/vm/drop_caches

this frees up memory. after that you can run free -m command again to see free memory again.
kg@kg-netbook-lubuntu:~/opt$ free -m
total used free shared buffers cached
Speicher: 2006 631 1374 0 11 193
-/+ Puffer/Zwischenspeicher: 427 1579
Auslagerungsdatei: 2035 6 2029


Chaning MySQL Text Fields for SEO Optimization

In this example I change turkish character set of name field from turkish to english words


select replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(name,'ü','u'),'ö','o'),'ı','i'),'ç','c'),'ş','s'),'ğ','g'),' ','-'),'.',''),'(','_'),')',''),',','') from geo_unit