First install python-software-properties:

sudo apt-get install python-software-properties

Next, remove openjdk package if installed:

sudo apt-get remove openjdk*

Now, add java repository by webupd8team:

sudo add-apt-repository ppa:webupd8team/java

And update your system:

sudo apt-get update

For installing Oracle Java 7 run:

sudo apt-get install oracle-java7-installer

For Oracle Java 6 run:

sudo apt-get install oracle-java6-installer

For Oracle Java 8 run:

sudo apt-get install oracl...

To install nginx with txid module

install nginx-full package:

sudo apt-get install nginx-full

download last nginx source:

wget http://nginx.org/download/nginx-1.9.9.tar.gz

examine what flags and modules your current nginx installed with:

nginx -V

you will see something like

nginx version: nginx/1.6.2 (Ubuntu)
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-l...

This tutorial is about setting up environment for RubyOnRails on Ubuntu 14.04.

First of all, update & upgrade your system:

sudo apt-get update

^
sudo apt-get upgrade
^

Install git and curl:

sudo apt-get install curl

^
sudo apt-get install git-core
^

Configure git:

git config --global user.name "Your Name"

^
git config --global user.email email@example.com
^

Install RVM:

curl -sSL https://get.rvm.io | bash -s stable

^
source ~/.rvm/scripts/rvm
^
Test RVM installation correctness:

type rv...

This card is the copycat from this awesome article, all thanks to Zsolt Agoston.

# Extract the private key
openssl pkcs12 -in wild.pfx -nocerts -nodes -out priv.cer
 
# Extract the public key
openssl pkcs12 -in wild.pfx -clcerts -nokeys -out pub.cer
 
# Extract the CA cert chain
openssl pkcs12 -in wild.pfx -cacerts -nokeys -chain -out ca.cer

sudo pacman-mirrors -f5 # to update mirror list
sudo pacman -Syyu # system upgrade

Or oneliner

sudo pacman-mirrors -f5 && sudo pacman -Syyu

To reset RabbitMQ Mnesia database ensure that RabbitMQ process is running on your system. Then stop the running application:

sudo rabbitmqctl stop_app

After that run the command:

sudo rabbitmqctl reset

And then start the app:

sudo rabbitmq start_app

If you getting messages like this: perl: warning: Setting locale failed. in your console, then you must configure your locales. First run:

locale

You will see something like this:

LANG=C
LANGUAGE=
LC_CTYPE=fi_FI.UTF-8
LC_NUMERIC="C"
LC_TIME="C"
LC_COLLATE=fi_FI.UTF-8
LC_MONETARY="C"
LC_MESSAGES=fi_FI.UTF-8
LC_PAPER="C"
LC_NAME="C"
LC_ADDRESS="C"
LC_TELEPHONE="C"
LC_MEASUREMENT="C"
LC_IDENTIFICATION="C"
LC_ALL=

Then generate the missing locale and reconfigure locales...