ruby installation

sudo gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
or
gpg2 --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
curl -sSL https://get.rvm.io | bash -s stable --ruby
source /home/nimesh/.rvm/scripts/rvm
rvm get stable --autolibs=enable
rvm install ruby-2.6.6
rvm --default use ruby-2.6.6
curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs
gem update --system
gem -v
echo "gem: --no-document" >> ~/.gemrc
gem install rails -v 5.2.3
sudo apt-get -y install postgresql postgresql-contrib libpq-dev
sudo -u postgres psql postgres
\password postgres
create role rails_dev with createdb login password 'aqwe123';
rails new myapp -d postgresql
cd myapp/
vim config/database.yml
username: abc
password: 123
-- Uncomment line 40 and 44 for the database host configuration.
host: localhost
port: 5432
-- Now go to the test section and add the new configuration below:
  database: myapp_test
  host: localhost
  port: 5432
  username: abc
  password: 123
rails db:setup
rails db:migrate
rails s -b 192.168.1.110 -p 8080 or rails s

-- kill puma process
lsof -wni tcp:3000 
kill -9 (PID)


-- postgresql setup
sudo -u postgres psql
create user alphauser with password 'alphapassword';
create database alpha_database owner alphauser;
alter user alphauser superuser createrole createdb replication;
\q