Merge pull request #328 from biswajitdas-007/javascript

String methods added

backend/ruby_on_rails.rb

@@ -1,114 +0,0 @@
-# The Rails Command Line
-# For more info see: https://guides.rubyonrails.org/command_line.html
-
-# Attention!!!
-# In Rails 4 some commands need replace `rails` to `rake`
-# For more info see: https://github.com/rails/rails/pull/22288
-#
-# If commands not working, you can run them as:
-# `bin/rails <command> <arg>` or `bundle exec rails <command> <arg>`
-
-
-# Create new project
-rails new project_name
-
-# with the version number of the framework
-rails _4.2.7_ new old_project_name
-
-
-
-# Run server (for development)
-rails server
-rails s # shortcut
-
-# Run sever listen 3200 port on all network interfaces
-rails s -b 0.0.0.0 -p 3200
-
-
-
-# Run console
-rails console
-rails c # shortcut
-
-# Run console in test environment
-rails console test
-
-# Run console in sandbox (all transactions and changes will be canceled)
-rails console --sandbox
-
-
-
-# Create model
-rails generation model Product title:string body:text
-rails g model ProductItem product:references 'price:decimal{8,2}'
-
-# Delete a generated model template
-rails destroy model Product
-rails d model ProductItem
-
-
-
-# Create controller
-# Controller name is better to use in the plural
-rails generate controller Users index show new create edit update destroy
-rails g controller Pages index show
-
-# Create a controller in the namespace
-rails g controller api/v1/users index show create update destroy
-
-# Delete a generated controller template
-rails destroy controller Users
-rails d controller Pages
-
-
-
-# Create migration
-rails g migration AddAwesomeFieldToProduct awesome_field:string
-
-# Delete a generated migration template
-rails d migration AddAwesomeFieldToProduct
-
-
-
-# Create mailer
-rails g mailer UserMailer account_activation password_reset
-
-
-
-# Create channel (ActionCable, websockets)
-rails g channel Room
-
-
-
-# Create database
-rails db:create
-
-# Drop database
-rails db:drop
-
-# Load seeds (default data in database)
-rails db:seed
-
-# Perform migration
-rails db:migrate
-rake db:migrate # in Rails 4
-
-# Rollback migration
-rails db:rollback
-rails db:rollback STEP=3 # rollback 3 last migration
-
-
-
-# View all available routes in the app
-# In the dev environment you can see routes in http://localhost:3000/rails/info/routes
-rails routes
-
-
-
-# View project code metrics
-rails stats
-
-
-
-# Run the script in a Rails environment
-rails runner path/to/script.rb

languages/javascript.js

@@ -95,3 +95,9 @@ arr.reduce(callback[, initialValue])                 // Apply a function against
 arr.reduceRight(callback[, initialValue])            // Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value.
 arr.some(callback[, initialValue])                   // Returns true if at least one element in this array satisfies the provided testing function.
 arr.values()                                         // Returns a new Array Iterator object that contains the values for each index in the array.
+
+// String methods
+String.charAt(index)                                 // Returns the character at the specified index in a string.
+String.indexOf(character)                            // Returns the index of the first occurrence of a specified value in a string.
+String.substring(starting_index, ending_index)       // Returns a new string that is a subset of the original string.
+String.substring(starting_index)                     // Returns a substring from starting index to last index of string.

tools/ubuntu.sh

@@ -21,6 +21,7 @@ cat /proc/<process_id>/maps   # Show the current virtual memory usage of a Linux
 ip r # Display ip of the server
 
 lsof -i :9000 # List process running on port 9000
+kill -9 $(lsof -t -i:PORT) # Kill the process running on whichever port specified
 
 journalctl -u minio.service -n 100 --no-pager # List last 100 logs for specific service