linux

There are some importatnt step to install Nginx with passenger on a newly installed Ubuntu server.

1. step: Install RVM in multi-user mode
2. step: install dependencie for MRI ruby. There are a list in the end of rvm install message. Install these packages.
3. step: rvm install 1.9.2
4. step: After ruby installed successfully you need to install passenger with gem install passenger command.
5. step: You have got passenger gem, but haven't got nginx yet. Compile it from source: download, unpack, configure, make, make install.
6. step: nginx configuration

Some useful git command with branches and remote repositories.

Remote operations

List remotes:

git remote -v

Add remote gitosis server:

git remote add <remote_name> git@myhostname.com:my_project_name.git
git push <remote_name> master

Where master is your branch name

Main git branch orperations

list branches:

git branch -v

-v is optional, you use it to get more verbose output

Create new branch:

git checkout -b <new_branch_name>

Make config.ru with following content:

require 'rubygems'
require 'sinatra'
require './my_sinatra_application.rb'
 
run Sinatra::Application

You have to run bundle command. This will be install all necessary gems that listed in Gemfile.

You find debug log in default apache 2 error log files. This is /var/log/apache2/error.log in my case.

This small tutorial work on Ubuntu Hardy (8.04), Lucid 10.04 and Maverick (10.10)

Install Imagemagick and GraphicsMagick

apt-get install imagemagick graphicsmagick

Install Image Magick development files

apt-get install libmagickcore-dev libmagickwand-dev

gem install rmagick

On Hardy:
Install imagemagick from source and after it install development files:

sudo apt-get install libmagick9-dev

There are some easy steps to install Phusion Passenger for ruby 1.9.2 and apache2 on Ubuntu Linux.

1. Install rvm system wide

sudo bash < <( curl -L http://bit.ly/rvm-install-system-wide )

2. Install ruby 1.9.2

rvm install 1.9.2

3. add new line in /etc/bash.bashrc

[[ -s /usr/local/lib/rvm ]] && . /usr/local/lib/rvm

4. install passenger

sudo -i # you need root shell
rvm use 1.9.2-p0@global # or your version, use: rvm list

This blog entry show you how to use pivot or portre mode on your LCD monitor under Linux. I know the way that NVidia card owners can rotate their screen. You have to use official NVidia driver for this method.

You can use Google's browser on Linux. The early access release of Chrome .deb package is available from site of Chromium.

Antialased fonts will be after this 3 easy step in Emacs (Ubuntu 8.10).

The well known way is svn export. Some times this command is not applicable. You can use this simple shell command in this case (Linux/*nix only).

When I upgraded my Ubuntu Linux from "Gutsy Gibbon" to "Hardy Heron" my gnome-terminal not shown some characters correctly anymore. I tried change the character encoding to UTF-8, but next time back again to ANSI_X3.4-1968. And I have found the solution.