Week 1 exercises

Author: Luca Sartori

.gitignore

@@ -0,0 +1 @@
+**/node_modules

README.md

@@ -78,7 +78,7 @@ exercises as wanted.
 
 ### Materials
 
-1. You will need to install [Node.JS](https://nodejs.org/en/) (NVM is strongly recommended - [Unix](https://github.com/creationix/nvm#installation)/[Windows](https://github.com/coreybutler/nvm-windows))
+1. You will need to install [Node.JS](https://nodejs.org/en/) (Version 8) (NVM is strongly recommended - [Unix](https://github.com/creationix/nvm#installation)/[Windows](https://github.com/coreybutler/nvm-windows))
 
 2. The recommended IDE is [Visual Studio Code](https://code.visualstudio.com/). However, you can use any IDE of your preference.
 
@@ -280,9 +280,38 @@ Then you can go on with this
 - [How npm works?](https://docs.npmjs.com/how-npm-works/npm3)
 
 ### Exercise:
+Look into [`src/week1/day4-5`](src/week1/day4-5) in there there're some `js` files. Those 2 are Node.js apps, they don't work as you would expect from any other `.js` file.
+You will need to use the command line:
+```
+luca.sartori@AR-IT12688:~/bootcamps/ui$
+```
+That's your Command Line Interface, know your CLI, love your CLI, **BE** your CLI. A developer is defined by it's tools, and you will want this one on your side.
+
+You'll need to navigate to `src/week1/day4-5`
+```
+luca.sartori@AR-IT12688:~/bootcamps/ui$ cd src/week1/day4-5/
+```
+If you excecute a `ls` command you'll se the contents on the CLI
+```
+luca.sartori@AR-IT12688:~/bootcamps/ui/src/week1/day4-5/$ ls
+
+expressDemo.js  fsDemo.js  node_modules  package.json
+
+```
+Then, you have to run one of the files
+```
+luca.sartori@AR-IT12688:~/bootcamps/ui/src/week1/day4-5/$ node fsDemo.js
+```
+[**Remember, you'll need Node.js installed**](#materials)
+
+That will run the code, just remember two things
+1. Server code, like the one from [expressDemo](/src/week1/day4-5/expressDemo.js) keeps running, you have to exit it
+2. To exit a running process on the CLI, you need to press `CTRL+C`
 
 **Notes:**
 
+Don't be afraid to Google stuff, no developer remembers everything
+
 → [index](#index)
 
 # Week 2: TypeScript and Angular 101

src/week1/day4-5/expressDemo.js

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+const express = ;
+const app = express();
+const port = 3000;
+
+app.get('/', (req, res) => {
+    res.send('Hello There!');
+})
+
+app.listen(port, () => {
+    console.log('Example server listening on port ' + port);
+    console.log('Enter http://localhost:' + port + ' on your browser')
+})
+
+// First things first, this won't work. It's your job to fix it
+// Just a clue, that variable called express is a module, so you need to bring it in.
+// If only there was some kind of MANAGER for that ;) (make sure you save it though)
+
+// Once the server is working, add a new route, called "/random" that
+// sends out a random number between 0 and 100 as a response.
+
+// ******BONUS POINTS*******
+// Add 2 other routes, one that does whatever you want, and another one
+// that load up a JSON file from the server (if you don't know what that is, Google it)
+// and sends the content as a string (little tip, theres a Js method for that)

src/week1/day4-5/fsDemo.js

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+const fs = require('fs');
+var fileName = "test.txt",
+    content = "Hey There!";
+
+fs.writeFile(__dirname + "/" + fileName, content, function(err) {
+    if(err) {
+        return console.log(err)
+    }
+
+    console.log("The file was saved!");
+});
+
+// This is a node app, this code saves a file on the current path with
+// the content on the variable with that name.
+
+// Let's make more interesting, here's the API for the 'fs' module
+// https://nodejs.org/api/fs.html
+// Make the app check for a current file with that name, if it's there,
+// log some message on the console, if not, save the file like on the example
+
+// *****BONUS POINTS*****
+// Make it with a buffer