Run Local Node.JS Dependancies

From Command Line

Install dependency locally

npm install live-server

Create folder public with index.html and file called run-server.js. Here's the structure:

node_modules/
public/
   index.html
run-server.js

Content of run-server.js:

var liveServer = require("live-server");

var params = {
 port: 8181, // Set the server port. Defaults to 8080.
 host: "0.0.0.0", // Set the address to bind to
 root: "./public", // Set root directory that's being served. Defaults to cwd.
 open: true, // When false, it won't load your browser by default.
 logLevel: 2, // 0 = errors only, 1 = some, 2 = lots
};

liveServer.start(params);

in console run live-server

node run-server.js

or on Linux

node node_modules/.bin/live-server --open=public/

Using package.json

in console

npm init
npm install -D live-server
npm install --save cowsay

this will generate file package.json:

{
  "name": "test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "cowsay -b mooooooooo >> index.html && live-server --port=8085"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "live-server": "^1.2.0"
  },
  "dependencies": {
    "cowsay": "^1.2.1"
  }
}

to create index.html and run server

npm test

if you want to do clone a git repo and run in in live-server replace yellow line with:

"test": "git clone https://github.com/nikola-bodrozic/Bootstrap-Boilerplate-v3.3.7.git tb337 && live-server --watch=tb337 --open=tb337 --ignore=tb337/.git"

this will watch for file changes in tb337 folder but not in tb337/.git folder

another example

{
  "scripts": {
    "less-gen": "lessc -l public/css/style.less && lessc public/css/style.less public/css/style.css && exit 0",
    "lint-css": "csslint --ignore=ids,order-alphabetical  public/css && exit 0",
    "lint-js": "eslint public/js && exit 0",
    "test": "node run-w3cvalid.js && npm run less-gen && npm run lint-css && npm run lint-js && echo \"Tests finished\" && exit 0",
    "start": "node run-server.js"
  },
  "dependencies": {
    "csslint": "^1.0.5",
    "html-validator": "^2.2.3",
    "less": "^3.0.0-alpha.3",
    "live-server": "^1.2.0"
  },
  "devDependencies": {
    "eslint": "^4.10.0"
  }
}

Inside script.test and script.start we can run js files.

Usefull Shell Commands

Pack folder and backup database

Backup folder. Run as sudo, other users will change the original permissions

tar -zcf wp03.tar.gz wp03/

Backup database

mysqldump -u root -p -C albert > albert.sql.tgz

Create user with home folder, shell & password

sudo useradd -m -d /home/mike -s /bin/bash -c "Mike" -U mike
sudo passwd mike
Enter new UNIX password: 
Retype new UNIX password: 
passwd: password updated successfully

Numeric permissions in console

$ ls -la | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/)*2^(8-i));if(k)printf("%0o ",k);print}'
775 drwxrwxr-x  9 3173 3173   4096 Oct 12 20:01 .
755 drwxr-xr-x  4 3173 3173   4096 Oct 12 21:54 ..
755 drwxr-xr-x  6 3173 3173   4096 Oct 12 19:08 app
755 drwxr-xr-x  2 3173 3173   4096 Oct  9 15:46 bin
644 -rw-r--r--  1 3173 3173   2111 Mar 11  2017 composer.json
664 -rw-rw-r--  1 3173 3173 102342 Oct 12 19:08 composer.lock

Search file names and file content

find file that begins with example case insensitive search

find . -iname "example*" -print

finds string `getcol` in js files in current folder and it`s subfolders, print file name, line number and the line

find . -type f -name "*.js" -exec grep -in --with-filename getcol {} \;

Set permissions for files and folders

sudo find /var/www -type d -exec chmod 775 {} \;  # rwxrwxr-x
sudo find /var/www -type f -exec chmod 664 {} \;  # rw-rw-r--

Symfony 3 run console commands from controller

On shared hosting you don't have access to command line so you can use following script to clear cache:

<?php

namespace AppBundle\Controller;

use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Response;

// Import the required classed
use Symfony\Bundle\FrameworkBundle\Console\Application;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Output\BufferedOutput;


class DefaultController extends Controller
{
    /**
     * @Route("/", name="homepage")
     */
    public function indexAction()
    {
        $kernel = $this->get('kernel');
        $application = new Application($kernel);
        $application->setAutoExit(false);
       
        /*
        // php bin/console doctrine:generate:entities AppBundle:Task
        $input = new ArrayInput(array(
            'command' => 'doctrine:generate:entities',
            'name' => 'AppBundle:Task'
        ));
        */
       
        // php bin/console cache:clear --env=prod --no-warmup
        $input = new ArrayInput(array(
            'command' => 'cache:clear',
            '--env' => 'prod',
            '--no-warmup' => null
        ));
       
        $output = new BufferedOutput();

        $application->run($input, $output);

        // return the output
        $content = $output->fetch();

        // Send the output of the console command as response
        return new Response($content);
    }
}