Amer Jazaerly. » linux

Howto install rails 2.3 and ruby 1.9 on ubuntu for mysql and sqlite3

Amer — Fri, 20 Mar 2009 00:46:58 +0000

Prerequisite
As a prerequisite you will need to install the following packages,these packages are build tools and libraries you will need for compilation process.

sudo apt-get -y install libc6-dev libssl-dev libmysql++-dev libsqlite3-dev make build-essential libssl-dev libreadline5-dev zlib1g-dev

Installing Ruby 1.9.1

cd ~
mkdir src
cd src/
wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.1-p0.tar.gz
tar xzvf ruby-1.9.1-p0.tar.gz
cd ruby-1.9.1-p0/
wget http://redmine.ruby-lang.org/attachments/download/237
patch -p1 < 237
./configure --prefix=/usr/local --with-openssl-dir=/usr --with-readline-dir=/usr --with-zlib-dir=/usr 
sudo make && sudo make install

To make sure form your ruby version use the following command line.

ruby -v

The output should be something like this

ruby 1.9.1p0 (2009-01-30 revision 21907) [i686-linux]

If this command only returns “Happy new Ruby” please feel comfortable, your instllation is going fine.

ruby -ropenssl -rzlib -rreadline -e "puts 'Happy new Ruby'"

Ruby 1.9 bundles rubygems so there is no need to install it.

Installing mysql-ruby adaptor

cd ~/src
wget http://rubyforge.org/frs/download.php/51087/mysql-ruby-2.8.1.tar.gz
tar xzvf mysql-ruby-2.8.1.tar.gz
cd mysql-ruby-2.8.1
sudo ruby extconf.rb
make
sudo make install

Installing rails and other stuff

sudo gem install rails rake rack sqlite3-ruby

To make sure that all packages are successfully installed use the following command line

gem list

The output should be something like this

actionmailer (2.3.2)
actionpack (2.3.2)
activerecord (2.3.2)
activeresource (2.3.2)
activesupport (2.3.2)
rack (0.9.1)
rails (2.3.2)
rake (0.8.4)
sqlite3-ruby (1.2.4)

Now you can create and run a new rails application working on ruby 1.9 “.

For mysql database

rails yourapp --database=mysql

For sqlite3

rails yourapp

rubyonrails 2.3

With best wishes for fast performance.

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Colorize your Bash prompt

Amer — Tue, 20 Jan 2009 10:47:56 +0000

echo 'if [ -f /etc/bash_colorize_prompt ]; then' >> "$HOME/.bashrc"
echo '     . /etc/bash_colorize_prompt' >> "$HOME/.bashrc"
echo 'fi' >> "$HOME/.bashrc"

then

sudo su

and

> /etc/bash_colorize_prompt
echo "## Colors" >> /etc/bash_colorize_prompt
echo 'LFRED="[\033[01;31m]" # foreground light red' >> /etc/bash_colorize_prompt
echo 'RS="[\033[0m]"    	# reset' >> /etc/bash_colorize_prompt
echo 'FYEL="[\033[33m]" 	# foreground yellow' >> /etc/bash_colorize_prompt
echo 'LFGRN="[\033[01;32m]" # foreground light green' >> /etc/bash_colorize_prompt
echo 'FBLE="[\033[34m]" # foreground blue' >> /etc/bash_colorize_prompt
echo 'if [ "$USER" = "root" ]; then' >> /etc/bash_colorize_prompt
echo '        PS1="${LFRED}u${RS}@${FYEL}h${RS}:${FBLE}w${RS}# "' >> /etc/bash_colorize_prompt
echo 'else' >> /etc/bash_colorize_prompt
echo '        PS1="${LFGRN}u${RS}@${FYEL}h${RS}:${FBLE}w${RS}$ "' >> /etc/bash_colorize_prompt
echo 'fi' >> /etc/bash_colorize_prompt
echo 'if [ -f /etc/bash_colorize_prompt ]; then' >> "/root/.bashrc"
echo '     . /etc/bash_colorize_prompt' >> "/root/.bashrc"
echo 'fi' >> "/root/.bashrc"

Now the last step

source ~/.bashrc

Congratulations.

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Ubuntu 8.10 no sound after resume suspend/hibernate problem

Amer — Sun, 14 Dec 2008 00:54:00 +0000

This problem made me afraid to click-on suspend button for along time, and I tried my best to keep the mouse arrow away from that button, but finally I had a free time to do some troubleshooting,
Now to get rid from this problem you can execute the next lines in your terminal

pkill -9 pulseaudio
/usr/bin/pulseaudio -D --log-target=syslog
sudo su
echo "pkill -9 pulseaudio" > /etc/acpi/resume.d/99-restart-pulseaudio.sh
echo "/usr/bin/pulseaudio -D --log-target=syslog" >> /etc/acpi/resume.d/99-restart-pulseaudio.sh
chmod 755 /etc/acpi/resume.d/99-restart-pulseaudio.sh
chown root /etc/acpi/resume.d/99-restart-pulseaudio.sh

Enjoy.

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