A look at my old bookmarks of Safari and Chrome browsers…

A look at my old bookmarks of Safari and Chrome browsers…
Here the most important for the normal user… Worth surfing…
http://ebooks.edu.gr/new/ // Greek Primary, Middle and Secondary Schools textbooks available in PDF Free in Greek
https://service.eudoxus.gr/public/departments // Greek University textbooks by course (Listings)
Pcb123 Design and Order Printed Circuit Boards
HSBC Offshore Banking
Free IDE Netbeans by Oracle – Docs

How to update && upgrade a Linux Distro – 5 Distros (5 Different command procedures)

How to update && upgrade a Linux Distro
5 Distros (5 Different command procedures)


Ubuntu 17.10, CentOS 7.2, Fedora 26, Antergos 18.3 (ArchLinux rolling-release), OpenSuse 42


coming soon!

Ubuntu 17.10

sudo apt update
sudo apt dist-upgrade
sudo update-manager
sudo do-release-upgrade

CentOS 6 & 7.2

cat /etc/redhat-release
yum check-update
yum update
yum upgrade

Fedora 26 –> 27
sudo dnf upgrade –refresh   # double dash without space between dashes
sudo dnf install dnf-plugin-system-upgrade
sudo dnf system-upgrade download –releasever=27   # last dash is double dash without space between dashes
sudo dnf system-upgrade reboot

Antergos 18.3 (ArchLinux rolling-release)


OpenSuse 42


My iPad 1 (2010) and why I will continue using it

by LSE, @lwdlse

I have writtеn this article, for my almost 10 year anniversary of my tablet an iPad 1 model 2010 and iOS 5.1.1 [it can Not upgraded beyond this since is iPad 1]…
I have Never get it serviced in an Apple service or other services lab, and is still working perfectly!!!
Primary usage of this tablet is 97% reading e-books PDF [2% iCloud Notes/Cal etc, 1% other Apps], so assist very well this purpose so, I do Not plan to change it soon… by buying a newer model…

That is why I love Apple products – durable products – and I pass half of my time on these like iPad 1, MacBook Pro 2016 Oct model 15″ w/ touch ribbon…
Below is a short video about my iPad 1 that’s as said nearly to serve a decade without malfunctions… or service efforts/costs to me (Only charging the only minimal cost!).

Screen Shots

ipad 1 invoice 2010

Video Screen Casts

The most basic example (“Hello World!”) to convert an HTML5 web app to desktop (binary) app [W10, MacOS, Linux]

The most basic example (“Hello World!”) to convert an HTML5 web app to desktop (binary) app [W10, MacOS, Linux]


I. In this tutorial I will use in the first part(Part 1) Electron Frameworkhttp://electron.atom.io
II. And in the second part(Part 2)  I will use the NW.js (Node.js Library) for this – http://docs.nwjs.io/en/latest

Note: Also in the third way is to use Cordova to build a Windows 10 desktop app – https://cordova.apache.org [used also for building iOS & Android Apps & Windows Phone 10 Apps]. this will Not discussed here ….  https://cordova.apache.org/docs/en/latest/guide/platforms/win8/index.html .

The result will be almost the same a Desktop compiled Binary App for each platform.

A MAIN DISADVANTAGE is that “The downside of the Electron approach is that each app comes with a copy of two large software frameworks, Node.js and Chromium. The latter is technically a web browser engine, but as the web platform has expanded, the humble browser has turned into a sprawling software layer large enough to be an operating system of its own.”  … https://medium.com/dailyjs/put-your-electron-app-on-a-diet-with-electrino-c7ffdf1d6297

So a hello world app – minimal size – may be 115MB-200MB the same as one big app … ( source code minimal app be 2KB and source code for big app be 10MB – but the software frameworks make them the same relatively). Developers already have started to look for solutions as the link just above shows one … electrino…



General Steps

We proceed step by step how to:
Convert “hello world”(index.html local web page file), or http://www.google.com or other remote page, into a desktop binary app, in other words to a chromium independent window (without top bar controls like address bar or back & fwd buttons.

We start by installing Node.js if is Not yet installed in the computer… follow https://nodejs.org/en/download/

Also if you are in Windows 10 install Git Bash CLI [if Not yet installed] by installing Git from https://git-scm.com/download/win

For Linux / Mac, as for Git Bash CLI windows you can use the Terminal CLI app.


(Part 1) Electron Framework

Make a folder structure as Documents/desktop-apps/electron – open File Explorer and right click …/…/electron and choose Git Bash Here and confirm Node.js installed by [npm comes with Node.js]

LSE@PC7 MINGW64 /t/articles/desktop-apps/electron

$ node -v


LSE@PC7 MINGW64 /t/articles/desktop-apps/electron

$ npm -v


LSE@PC7 MINGW64 /t/articles/desktop-apps/electron



Generate a binary App using Electron from Hello World! Web App

Generally, an Electron app is structured like this (at minimum):  // more structure in Source Code

├── package.json
├── main.js
└── index.html
 "name": "your-app",
 "version": "0.0.1",
 "main": "main.js",
 "scripts": {
 "start": "electron .",
 "dist": "build"
 "author": "LSE",
 "build": {
 "appId": "com.example.helloworld"
 "devDependencies": {
 "electron": "~1.7.8",
 "electron-builder": "^17.1.2"
<!DOCTYPE html>
    <meta charset="UTF-8">
    <title>Hello World!</title>
    <h1>Hello World!</h1>
    We are using node <script>document.write(process.versions.node)</script>,
    Chrome <script>document.write(process.versions.chrome)</script>,
    and Electron <script>document.write(process.versions.electron)</script>. 
 <img src="img/mickey-mouse-icon.png">

const {app, BrowserWindow} = require('electron');
const path = require('path');
const url = require('url');

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let win;

function createWindow () {
  // Create the browser window.
  win = new BrowserWindow({
                           width: 1000, 
                           height: 700,
                           frame: true,   // put false for get a chromium windows completely frame-less
                           icon: path.join(__dirname, "img/favicon.ico")

  // and load the index.html of the app.
    pathname: path.join(__dirname, 'index.html'),
    protocol: 'file:',
    slashes: true
 // Or use this and comment above for load url
 // win.loadURL("http://google.com");
  // Open the DevTools.

  // Emitted when the window is closed.
  win.on('closed', () => {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    win = null;

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow);

// Quit when all windows are closed.
app.on('window-all-closed', () => {
  // On macOS it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {

app.on('activate', () => {
  // On macOS it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (win === null) {

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
end of electron code

LSE@PC7 MINGW64 /t/articles/desktop-apps/electron/your-app
$ ls
index.html main.js package.json
LSE@PC7 MINGW64 /t/articles/desktop-apps/electron/your-app
$ npm install   # type only this and press enter to install dependencies
> electron@1.7.10 postinstall T:\articles\desktop-apps\electron\your-app\node_modules\electron
> node install.js
LSE@PC7 MINGW64 /t/articles/desktop-apps/electron/your-app
$ npm start   # type only this and press enter to run app - in this stage a desktop app appear in your screen with Hello World!
> your-app@0.0.1 start T:\articles\desktop-apps\electron\your-app
> electron .

Close app by press Ctrl + C in the CLI Terminal or by press "X" on the right upper corner of the app.

LSE@PC7 MINGW64 /t/articles/desktop-apps/electron/your-app
$ npm run dist
> your-app@0.0.1 dist T:\articles\desktop-apps\electron\your-app
> build
Warning: description is missed in the package.json (T:\articles\desktop-apps\electron\your-app\package.json)
No native production dependencies
Packaging for win32 x64 using electron 1.7.10 to dist\win-unpacked
Warning: Application icon is not set, default Electron icon will be used
Building NSIS installer
 Packaging NSIS installer for arch x64
LSE@PC7 MINGW64 /t/articles/desktop-apps/electron/your-app

// here in this stage we get : 
T:\articles\desktop-apps\electron\your-app\dist\win-unpacked   // Run-able Windows app
T:\articles\desktop-apps\electron\your-app\dist\               // Install-able Windows app


source code here Electron

https://nodejs.org/api/os.html    //  <<<  you can find with Node.js the screenshot’s[the PC running App on system info] info here OS Node.js API <<<

Part 2 – NW.js Library

Get binary App using NW.js from web app

Step 1. Create package.json:

 "name": "helloworld",
 "main": "index.html",
 "version": "1.0.1",
 "description": "",
 "scripts": {

 "start": "nw .",
 "test": "echo 'Error: no test specified' && exit 1",
 "package": "nwb nwbuild -v 0.27.3-sdk ./ -o ./dist --output-format=ZIP",
 "package:run": "nwb nwbuild -v 0.27.3-sdk ./ -o ./dist -p linux64,win32,osx64 -r -- --enable-transparent-visuals --disable-gpu"

 "devDependencies": {
 "nw": "^0.27.3-sdk",
 "nwjs-builder": "^1.14.0"


// initialize your app
// and ...
nw.Window.open('index.html', {}, function(win) {});


Step 2. Create index.html:

<!DOCTYPE html>
    <title>Hello World!</title>
    <h1>Hello World!</h1>


Step 3. Run your app

LSE@PC7 MINGW64 /t/articles/desktop-apps/nwjs/app-nwjs
npm install// NOTES – if you do Not know latest versions in these lines:

 "devDependencies": {
 "nw": "^0.27.3-sdk",
 "nwjs-builder": "^1.14.0"

// you do Not include them and proceed as follows

$ npm view nw dist-tags

{ latest: ‘0.27.3’,
alphasdk: ‘0.13.0-alpha4sdk’,
alpha5sdk: ‘0.13.0-alpha5sdk’,
alpha6sdk: ‘0.13.0-alpha6sdk’,
alpha7sdk: ‘0.13.0-alpha7sdk’,
sdk: ‘0.27.3-sdk‘ }

LSE@PC7 MINGW64 /t/articles/desktop-apps/nwjs/app-nwjs
$ npm install nw@0.27.3-sdk –save-dev

// Till here you can run app by running:

LSE@PC7 MINGW64 /t/articles/desktop-apps/nwjs/app-nwjs
$ npm start

To build app you run/install the(by default – latest version):
LSE@PC7 MINGW64 /t/articles/desktop-apps/nwjs/app-nwjs
$ npm i -D nwjs-builder

// equivalent to: npm install nwjs-builder –save-dev

LSE@PC7 MINGW64 /t/articles/desktop-apps/nwjs/app-nwjs
$ npm run package

> helloworld@1.0.1 package T:\articles\desktop-apps\nwjs\app-nwjs
> nwb nwbuild -v 0.27.3-sdk ./ -o ./dist –output-format=ZIP

{ version: ‘v0.27.3’,
flavor: ‘sdk’,
targets: [ [ ‘win32’, ‘x64’ ] ],
path: ‘./’ }

0: Read package.json
1: Prepare build directory at dist\helloworld-win-x64
2: Copy binary from C:\Users\User\.nwjs-builder\caches\binary-nwjs-sdk-v0.27.3-win-x64
3: Edit Windows executable
4: Make working directory
5: Copy included files to C:\Users\User\AppData\Local\Temp\d-11806-6336-7fj1i6.kkjkvgqfr
6: Compress application
7: Combine executable at dist\helloworld-win-x64\nw.exe
8: Rename application to helloworld.exe
9: Zip to dist\helloworld-win-x64.zip
10: Clean up dist\helloworld-win-x64

LSE@PC7 MINGW64 /t/articles/desktop-apps/nwjs/app-nwjs
$ npm start
source code here NW.js

https://nodejs.org/api/os.html    //  <<<  you can find with Node.js the screenshot’s info here <<<






























Note – Cordova Hybrid Mobile Platform

Get binary Desktop/Mobile App using Cordova from web app




Leonidas Savvides
Web/Mobile/Desktop Developer
Twitter @lwdlse

Leonidas is a Freelance Full Stack Web Developer and Hybrid Mobile/Desktop App Developer. He likes involved in new trends like ES6/ES7/ES8, Electron/NW.js and Cordova platforms, PHP 7 and Frameworks like jQuery Mobile, Ionic 2, Angular, React or CodeIgniter/CakePHP etc. He rarely finds free time, and almost always is programming or practicing/reading/watching/learning new technologies, in programming using Web Technologies.


My first PC Build – Help & Tips

My first PC Build – Help & Tips – Learning Material Used

I recommend Intel Processors due to the fact are used by Apple Macs hence is supported/you-can-build a Hackintosh system or run a Virtual Machines(VM) and have as guest platform MacOS in addition to the normal Windows 10 or Linux VMs…
I recommend pickup the items you want but Not purchase them at the moment,… but await a Holiday Discount period to buy them under discount… I buy most items under Black Friday(BF) period at 20% Off. You can buy at BF if USA store or at Prime Day from Amazon or at Xmas etc



  1. (c) 2009 , Build Your Own PC – Do-It-Yourself For Dummies [ Part-of-Tens useful Tips at the end of the eBook ]
  2. (c) 2017 , Troubleshooting and Maintaining Your PC All-in-One For Dummies – 3/e
  3. How to Buy/Choose a PC.PDF
  4. Windows 10 Anniversary Update Bible (2017), Wiley
  5. Linux Bible 9th Edition 2015, Wiley
  6. Build a Better PC – 2013
  7. https://s3.eu-central-1.amazonaws.com/leonidassavvides/rhel_5_6_7_cheatsheet_11x17_0417_jcs.pdf


  1. https://choosemypc.net
  2. https://pcpartpicker.com
  3. http://techreport.com/review/23624/how-to-build-a-pc-the-tech-report-guide/
  4. https://www.singular.com.cy/ – buy components etc


  1. https://youtu.be/mqb4dDSPRP0 – Win 10 Pro for 15$ [best to install/activate immediately]
  2. How To Build The Best PC For Photo and Video Editing
  3. http://techreport.com/review/23624/how-to-build-a-pc-the-tech-report-guide/
  4. Watch “Avoiding Common PC Building Traps – Episode 1,2,3,4” on YouTube
    1. https://youtu.be/-plesrt8ZCs
    2. https://youtu.be/pPFEkL5GIiI
    3. https://youtu.be/CB9KiKrC-C4
    4. https://youtu.be/CkbgkOeqT0Q


Coming Soon my Components & Setup Process

15 Most Used Linux commands beyond the basics

15 Most Used Linux commands beyond the basics


My 2017-2018 Coding Interests & Editors/IDEs

My 2017-2018 Coding Interests & Editors/IDEs

New Tech and Web Development Trends



After finish current project

Upcoming Program Changes for the LFCS Certification Exam in 2018

Answers & Notes

If you sit for a free retake after 13:00 UTC on March 20, 2018, you will be tested on Domains and Competencies V3.18 (even if that is not what you were originally tested on during your first attempt).

LFCS Domains and Competencies V3.18

Essential Commands – 25%

  • Log into local & remote graphical and text mode consoles
  • Search for files
  • Evaluate and compare the basic file system features and options
  • Compare and manipulate file content
  • Use input-output redirection (e.g. >, >>, |, 2>)
  • Analyze text using basic regular expressions
  • Archive, backup, compress, unpack, and uncompress files
  • Create, delete, copy, and move files and directories
  • Create and manage hard and soft links
  • List, set, and change standard file permissions
  • Read, and use system documentation
  • Manage access to the root account

Operation of Running Systems – 20%

  • Boot, reboot, and shut down a system safely
  • Boot or change system into different operating modes
  • Install, configure and troubleshoot bootloaders
  • Diagnose and manage processes
  • Locate and analyze system log files
  • Schedule tasks to run at a set date and time
  • Verify completion of scheduled jobs
  • Update software to provide required functionality and security
  • Verify the integrity and availability of resources
  • Verify the integrity and availability of key processes
  • Change kernel runtime parameters, persistent and non-persistent
  • Use scripting to automate system maintenance tasks
  • Manage the startup process and services (In Services Configuration)
  • List and identify SELinux/AppArmor file and process contexts
  • Manage Software
  • Identify the component of a Linux distribution that a file belongs to

User and Group Management – 10%

  • Create, delete, and modify local user accounts
  • Create, delete, and modify local groups and group memberships
  • Manage system-wide environment profiles
  • Manage template user environment
  • Configure user resource limits
  • Manage user privileges
  • Configure PAM

Networking – 12%

  • Configure networking and hostname resolution statically or dynamically
  • Configure network services to start automatically at boot
  • Implement packet filtering
  • Start, stop, and check the status of network services
  • Statically route IP traffic
  • Synchronize time using other network peers

Service Configuration – 20%

  • Configure a caching DNS server
  • Maintain a DNS zone
  • Connect to network shares 
  • Configure email aliases
  • Configure SSH servers and clients
  • Restrict access to HTTP proxy servers
  • Configure an IMAP and IMAPS service
  • Query and modify the behavior of system services at various operating modes
  • Configure an HTTP server
  • Configure HTTP server log files
  • Restrict access to a web page
  • Configure a database server
  • Manage and configure containers
  • Manage and configure Virtual Machines

Storage Management – 13%

  • List, create, delete, and modify physical storage partitions
  • Manage and configure LVM storage
  • Create and configure encrypted storage
  • Configure systems to mount file systems at or during boot
  • Configure and manage swap space
  • Create and manage RAID devices
  • Configure systems to mount file systems on demand
  • Create, manage and diagnose advanced file system permissions
  • Setup user and group disk quotas for filesystems
  • Create and configure file systems


My Way to Linux Certification – Tips

My Way to Linux Certification [LFCS]

Valuable Tips & Help


Prior Register for Linux Exam & Tips

If you are complete beginner, I recommend to read some eBooks and take some online courses to pass the beginner’s level, and after Register for exam and then take more advanced online courses/eBooks especially for the Exam.

Exam done online [From your home/office room] from Chrome browser, embedded Terminal plugin … LF [Linux Foundation] setup a remote Linux server [CentOS 7 or Open SUSE 42 or Ubuntu 16.04 choice is yours/mine]…

I preferred Register for LFCS Administrator Exam of Linux Foundation because:

You do exam from Home without need to go to Exam center, but required have your PC screen monitored and having an external camera for monitoring room, by your exam proctor …etc . Also room must be quite and you/I being alone in the room…

I you want save some money: Register week LAST FRIDAY OF JULY – this day called System Admin day and MANY OFFERS EXIST for buying exam or bundles Exam + LFS201 Essentials of System Administration courseI saved $200 by purchasing an (offer) bundle 24 July 2017… I have one year to sit in my room online the exam…. and I have got a Linux course LFS 201 in the bundle… but I recommend you find and some other eBooks and courses … this never hurts.

You have one year to give the exam. Date/Time you/I define it. If you fail first time you have a second free retry…

Before register of exam or before get training from course LFS201 Essentials of System Administration, make sure you take and finished the Free course:

LinuxFoundationX: LFS101x Introduction to Linux


Exam is practice/performance based. You are given a server and a list of tasks to do on it… After you graded by automated system that checks the server you practiced on… after 3 days you get the result Pass or Not. To pass you need 74% score… During exam are permitted only server itself help resources like man(manual) pages, info pages and –help pages… you can Not surf the web for help nor have notes in the desk you work in your PC… during the exam.


From FAQ  [extracts from LF Site]

6. How long does the exam last?

Once you launch the exam, you will have two (2) hours to complete the certification exam.

8. How can I study for Exams?

The Linux Foundation’s Certification Exams are performance-based, which means the only way to ‘study’ for them is to practice, practice, practice. The Overview of Domains and Competencies – listed in the Exam Details section of the webpage for each Certification (LFCS and LFCE) – provides guidance on the topics covered in an Exam.  Candidates are encouraged to gain as much hands-on experience as possible in order to build mastery using the command line (since the Exam terminal does not use a Graphical Interface). Be sure to check out our Free Certification Prep Guide for more help.

Scoring and Notification

A score of at least 74% must be earned to pass the Exam.

Upon completion, exams are scored automatically and a score report will be made available within three (3) business days. If a passing score is achieved and other applicable requirements for Certification have been fulfilled, a notification indicating the Candidate has been successfully Certified will follow the score report.

Other Links



http://sysadminday.com/  System Administrator Appreciation Day is a 24-hour event occurring on the Last Friday of July



https://training.linuxfoundation.org/upcoming-program-changes-for-the-lfcs-certification-exam-in-2018    // Here is an Update : If you sit for a free retake after 13:00 UTC on March 20, 2018, you will be tested on Domains and Competencies V3.18 (even if that is not what you were originally tested on during your first attempt).


Linux required, as 9 from 10 servers have OS Linux… I am Mobile/Web Developer and I will give it inside one year… I will study 3h / day practicing and 2 h/day Reading/Watching Linux eBooks & courses… but without effort you cannot pass… No pain, no gain !!! This is Not my main field of work but Web/Mobile Development so I do plan to do Web and Mobile Apps all the year but I will study for Exam along…

As Freelancer I want do all alone and Not outsource server Admin works in my home office…

Note: There many organizations that offer Linux Certification… But I think LF is the best… also others may require you go in an exam center…. in your area.


Other Tips – https://www.linux.com/learn/tips-how-study-your-linux-certification-exam

There are different learning styles, and you’ll be more effective if you study in the way that suits you.

Taking the test immediately after the course it vital, he says. “Retention is a big factor.”

But if you’re going at it on your own, should you take the core competencies one at a time or look through them, then focus on your weakest areas? Again, that depends on your personal style.

Powers advises looking through the course material to determine whether you have the proper background. Then you can decide how to proceed.

He puts the success rate at about one in five for people who study on their own; at two or three in five for those who use online training courses that have to be completed in a set time period; and at 90 to 100 percent for structured training courses.


Some LINUX eBooks

  1. Linux Bible 9th Edition (c) 2015 Wiley //  mostly RedHat 7/CentOS 7 / mostly content is common to Ubuntu 14.04
  2. Linux Pocket Guide 3/e (c) 2016 O’Reilly
  3. Mastering Linux Shell Scripting 1/e (c) 2015 Packt Pub
  4. Your UNIX/Linux The Ultimate Guide Third Edition (c) 2006-2013 McGraw-Hill
  5. CENTOS 7 Linux Server Cookbook 2/e (c) 2016 Pack Pub
  6. http://www.thegeekstuff.com/linux-101-hacks-ebook  Free eBook 2/e
  7. Guide to Parallel Operating Systems with Windows® 10 and Linux, 3/e (c) 2017 Cengage
  8. https://en.wikipedia.org/wiki/Category:Linux_magazines

CentOS 7 Docs & Help


Bye Bye,

Hope/wish to myself and you pass the exam !!!





Dual-boot system, Triple-boot system, 4-Multi-boot system Win7-Win10-Fedora-Ubuntu

Coming Soon! Sept 2017

A Dual-boot system, Triple-boot system, 4-Multi-boot system

Win7-Win10-Fedora-Ubuntu Project



… etc

How to configure XAMPP to send mail from localhost?

How to configure XAMPP to send mail from localhost?


You can send mail from localhost with sendmail package , sendmail package is inbuild in XAMPP. So if you are using XAMPP then you can easily send mail from localhost.

for example you can configure C:\xampp\php\php.ini and c:\xampp\sendmail\sendmail.ini for gmail to send mail.




in C:\xampp\php\php.ini find extension=php_openssl.dll and remove the semicolon from the beginning of that line to make SSL working for gmail for localhost.

in php.ini file find [mail function] and change

sendmail_from = my-gmail-id@gmail.com
sendmail_path = “\”C:\xampp\sendmail\sendmail.exe\” -t”

Now Open C:\xampp\sendmail\sendmail.ini. Replace all the existing code in sendmail.ini with following code



ESPECIALLY For gmail please check https://support.google.com/accounts/answer/6010255 to allow access from less secure apps

Now you have done!! create php file with mail function and send mail from localhost.

PS: don’t forgot to replace my-gmail-id and my-gmail-password in above code. Also, don’t forget to remove duplicate keys if you copied settings from above.

For example comment following line if there is another sendmail_path : sendmail_path=”C:\xampp\mailtodisk\mailtodisk.exe” in the php.ini file

Also remember to restart the server using the XAMPP control panel so the changes take effect.

I can provide sample working XAMPP php.ini & sendmail.ini – download and compare if you have problems sending email….with XAMPP using gmail… cost 5$ [PayPal] send email to mymac@poliscarhire.com and lsepolis123@gmail.com …


Send email SAMPLE scripts:



$email = "USERNAME3@gmail.com";

$to = "{$email}"; 

$subject = "Inquiry Contact Us from ". $email;

$headers = "From:USERNAME@gmail.com";

$headers .= "\r\nBcc:USERNAME2@gmail.com";

$headers .= "\r\nReply-To:{$email}";

$headers .= "\r\nContent-Type: text/html; charset=UTF-8";

$headers .= "\r\nMIME-Version: 1.0";


CAKEPHP – Controller



public function emailtothis() {
 $email1 = $this->request->data('emailfield');
 $id = $this->request->data('idemail');
 $listing = $this->Listings->get($id, [
 'contain' => ['Users', 'Categories']
 foreach ($listing as $key => $value) {
 $txt.="{$key} : {$value} , ";
 $email = new Email('default');
 $email->from(['USERNAME@gmail.com' => 'Polis.town'])
 ->subject($listing->name." - Polis.town")
 ->send('Share from Polis.town... <br/><br/>' 
 . $listing->name . '<br/>' . $listing->address . '<br/>'
 . (($listing->tel !="")?('<a href="tel:00357'.$listing->tel.'">'.$listing->tel.'</a>'):('')) .'<br/>' 
 . (($listing->telMob !="")?('<a href="tel:00357'.$listing->telMob.'">'.$listing->telMob.'</a>'):('')) .'<br/>' 
 . (($listing->email!="") ? ('<a href="mailto:'.$listing->email.'">'.$listing->email.'</a>') : ('' )).'<br/>' 
 . (($listing->url!="") ? ('<a href="'.$listing->url.'">'.$listing->url.'</a>') : ( '' )) .'<br/>'.'<br/>' 
 . $listing->description.'<br/><br/>'
 . 'long: '. $listing->long.', lat: '.$listing->lat); 
 /* */
 //die($email1.", ".$listing->url);
 return $this->redirect('/listings/view/'.$id);

CODEIGNITER – Controller



   public function sendemail(){


        $this->email->from('USERNAME@cytanet.com.cy', 'lse');




        $this->email->subject('Email Test');

        $this->email->message('Testing the email class.');


        die("email sent");


My new 15″ Mac Book Pro 2016

My new 15′ Mac Book Pro 2016 – Unboxing & Review
(MBP 2016 & Accessories)


I definitely recommend use/read manual prior using your new Mac… I also turned off File Vault [is turned Off by default – but by error activated it] for a little more faster usage of the MBP.

here are some extracts from manual….




Ordering accessories procedure I followed….

Amazon.com [US]  >>>  MyUS.com [FL, US Forward address]  >>>  Europe [My Home]


MyUS: Free 1 Month Membership + 20% off your 1st Shipment!

This Blog Post Coming Soon!!!



Mac Book Pro 2016 Accessory : usb c hub

usb c hub

aukey usb c hub

aukey usb c hub


samsung t3 ssd

samsung t3 ssd

Mac Book Pro 2016 Accessory : mbp2016_sleeve

mbp2016 sleeve




















































Buy from Amazon

http://amzn.to/2iUm7JT   aukey hub

http://amzn.to/2iOdrUK   Samsung T3 ssd

http://amzn.to/2iUgfQT   hub hdmi

http://amzn.to/2i4Uj4h   sleeve case

Shipping address in Amazon put your MyUS.com forward address MyUS: Free 1 Month Membership + 20% off your 1st Shipment!

After all items delivered to Forward address

Request shipment to you eg Europe or Africa …


Amazon Order History – Last 6 mos


MyUS Box/Suite (Fwd Address from US, FL => To me Europe) Prior Ship it to me!


MyUS Box/Suite After Ship it to me!


Unboxing Accessories


Unboxing MBP 2016 15″


Arranging Boot Order in BIOS

Note Boot Order in my PC: In my PC a HP Compaq 8200 Elite Micro Tower PC , On startup PC Press(press many times the …) just prior Windows 10 logo appear:

F9 – temporary choose Boot Device (Disk) – without changing/entering the BIOS setup

F10 – enter Bios setup to set Boot Order Permanently, till you change it again


Set Boot Order

To arrange boot order in BIOS so can boot from desired location/media/disk you setup Bios temp or permanently so the desired is the first booting device e.g. DVD (1) > USB stick/Disk (2) > HDD (3) … meaning boot from DVD if you have bootable CD or DVD, (if not) boot from USB if you have Bootable USB Stick or USB HDD… etc.

To boot from DVD Or USB bootable media:
1. If you use a USB flash drive as a bootable media, plug it into the USB port.
2. Turn your computer on. During the Power-On Self Test (POST), you will see the key combination that you need to press in order to enter BIOS.
3. Press the key combination (such as, Del, F1, Ctrl+Alt+Esc, Ctrl+Esc, in my PC is F10). BIOS setup utility will open. Note that BIOS may differ in appearance, sets of items, names, etc.
Some motherboards have a so called boot menu opened by pressing a certain key or key combination, for instance, F12. The boot menu allows selecting the boot device from a list of bootable devices without changing the BIOS setup [in my PC this is F9].
4. If you use a CD or DVD as a bootable media, insert it in the CD or DVD drive.
5. Make your media (CD, DVD or USB drive) device the first booting device:

1. Navigate to the Boot order setting by using the arrow keys on your keyboard.
2. Place the pointer on the device of your bootable media and make it the first item in the list. You can usually use the Plus Sign and the Minus Sign keys to change the order.


Bios setup image

boot order in Bios


6. Exit BIOS and save the changes that you made. The computer will boot from bootable media if present.
If the computer fails to boot from the first device, it tries to boot from the second device in the list, and so on.


Notes & More Reading



Free Tools for Mac users – most are for Windows/Linux as well

File Vault, Time Machine & Cloud Storage etc cool Mac tasks that not cost you a dime
Free Tools for Mac users – most are for Windows/Linux as well



This article aimed for Mac users or developers using a Mac, and is about the free tools you can use for development, or the basic Mac computer tasks make you safer or more productive user/developer.
Mac tricks makes you a better User.

File Vault – encrypt your drive

With File Vault (read more below) enabled you can encrypt your Mac SSD or HDD Drive so every time you switch on your Mac you insert a pass phrase to use it. Even your Disk drive removed from your Mac and used elsewhere your data are still Not accessible without the secret pass phrase. Pass phrase can be your Apple ID password in new Macs. You can disable/re-enable it if you like or if you do Not want it any more.


As of Anti-virus I use the Free AVG for Mac Anti-Virus [note: Viruses are very rare on Macs].

Time Machine & Cloud Storage – two(2) different backup methods, required both 

Time Machine backups – if the File Vault is enabled – require pass phrase so in other words backup is encrypted and protected. Time Machine backup – you can restore even OS, Apps and Data with it – is done by me every 2-3 months since I have and Windows PCs and use Mac 2-4 times a week only. During backup I exclude my Parallels Virtual Machines since do not use a lot and backup separately every year Ubuntu OS, Chrome OS & Windows Vista OS.

I also use for instant backup Cloud Storage from many cloud storage providers (all free plans 5GB-15GB) namely iCloud Drive(Apple), Google Drive, One Drive(Microsoft), Dropbox Drive. If for example I create a mock-up, doc, ppt, xls or other file, I save it to cloud, that way is on my machine and cloud and can also access from other devices including mobile (connected to the cloud/internet). So I feel secure and impossible to loose data and any file… All for free.

Write, Keynote, Numbers, Apple Mail

What I also like about (new) Macs is that come pre-installed with Write, Keynote, Numbers Apps and also Apple Mail.

Mac OS Server App

I also installed Mac OS Server App (by Apple that cost below 20$ – the only expense as of software) that make the Mac a server[web server, mail server, … Etc] and I am experimenting with it…

Web/Mobile Developer/Designer Applications – mostly free and open source

As an web/mobile developer/designer I build mobile apps and responsive sites so, I installed  –  free mostly given, tools by Mobile OS mfg like Google, Apple & MicroSoft  –  SDKs for Android and iOS, Xcode, Eclipse, JDeveloper, Android Studio, Intel XDK IDE, Brackets web code editor, NetBeans, Cordova CLI tools, NodeJs, all freeware. Basically I find that I need nothing else for my work except Adobe Fireworks or PhotoShop (paid both) but you can install the freeware GIMPShop that just do the same.
Note: all the tools in this paragraph exist also for Windows(not Xcode/iOS-SDK) and some for Linux.
Addition: I recently installed VMWare Fusion Pro 8 and run Windows 10 Pro VM and added Visual Studio 2015 Community IDE for Windows Development on the Mac.


With these tools you can become an advanced & safer user/developer at almost no cost.



Reference Links

Also some cool Web Based Apps

These are what I use. There are many other equivalents, too.

The benefits of education will only be online, nationally and internationally, from digital devices of now and the future

The benefits of education will only be online, nationally and internationally,
from digital devices of now and the future

In fact the proliferation of only online education should make public schools and governments more involved in online virtual world and I think should bring many benefits in addition to benefits brought by the involvement of Internet today.

There will be many accurate and free online academic and other resources from government agencies, making the web a better place. This should influence all Internet workforce but mainly online learners, researchers and students. Also government agencies should develop more and better and free online learning tools helping more the online web workers, students and learners to learn what they want easily and accurately.

Also not optional online education will make offline education limited to only practical sessions required in some educational fields. In a few  years with this setup, required online education should self-develop to the level could not make any further progress, so the world will reach a peak in technology and education development. This will make the most people to achieve the skills in their target subject or subjects easily.

Online education means learning without distractions, at your comfort or your own environment. You no longer will have to travel to school or buy books or other school materials. In other words costs and time should be saved and used for other activities that bring more skills and learning than it’s offline counterpart.

The technology tools for permanent online education I think should be the same as today’s online education, the Computer, Tablet, and Phone, and the Network, as of hardware. The development of software connected to Internet should make a lot of progress and development with gov agencies involved. Books should be in electronic format in digital libraries either governments’ public online libraries or schools online libraries.

Communication will increase but stay to the level of today with email, and chat text, voice, video, notifications and alerts, and social networks communication. This via Wi-Fi and cellular 3G and 4G technologies.

In conclusion I think governments should enforce required online education, and by the year 2020 all countries’ education should be online. All walks of life will reach top development by then.

Tablets in schools and universities

Author: Leonidas Savvides,  @lwdlse

Computing in class: Desktop: 1990-2000, Laptop: 2000-2010, Tablet: 2010+
Main Tablet OS:  Google Android, Apple iOS, MicroSoft Windows 8/10

Two decades ago and particularly from 1990-2000 desktops were de facto standard for students. A decade ago and particularly from 2000 to 2010, laptops started transforming the college experience; today and from 2010, tablets have become a necessity and a way to reduce costs and to become more efficient in all our productivity and more.

Tablets complement Smart Phones although there are many uses exclusively to each.

As an essential to student success Tablets will become this year (2014-2015) the tool of every student, in other words no student can do without one. These smart screens provide tactile, intuitive experiences that are perfect for hands-on learning and social interaction. Given that books and friends are college students’ primary priorities, the tablet is a great tool for achieving academic and social success.

With so many Apps for Tablets is hard to imagine a task you cannot do without.

Tablets represent efficiency in the classroom. They allow for faster, more fluid learning in both lectures and seminars, as the tablet enables quicker note taking. Easy access to apps in class allows students to engage with new information and contribute relevant material to the class conversation. That means that info is instantly accessible, so that students can instead concentrate on critical thinking.

The physical dimensions and nature of Laptops are done them unsuitable for classroom or at least not like their successors Tablets; this for the face to face professor-student or student-student communication.

Financially, tablets reduce the costs in the long run. They offer additional savings through e-books—a cheaper, lighter alternative to expensive textbooks. Also you have the ability to keep your eBooks intact and annotate digitally a copy of them, and keep them both in Tablet or Computer where easy access and no non-found problems. Also eBooks take no space in your room any number to have.

Personally I believe the more you know about Apps and Tablet usage the more benefit you will have from it. College students should benefit more from High School students and from Primary Pupils. Gaming I think goes more for non-college users.

I think Tablets should be introduced to schools of all levels by law and special education (and guides published) about their usage should be provided appropriately. Also students must be given special treatment not to spent most of their time in non-education matters such watching video or playing games, rather concentrate first on their courses and if there is spare time to do concentrate on some other activity.

PR Polis Travel Guide App

PR – Polis Travel Guide App

Note: Polis Travel Guide has been released for BlackBerry 10 Smart Phones & Tablets on Wed 22/10/2014. You can DownLoad it here.

Note: Polis Travel Guide has been released for Windows Smart Phones & Tablets on Thu 16/10/2014. You can DownLoad it here.

Also on AndroidYou can DownLoad it here, or for Amazon Fire Android Tablets & Phones.

New Polis Resort Travel Guide App, a comprehensive guide about Polis with Polis Maps, Services & Attractions, Travel Notes, Photo Sharing, Hits App Stores This Week.


This is the only App about Polis as of this writing. You must download if you plan to visit, stay or work in Polis Chrysochous, Cyprus. App will be available for iOS, Android, Blackberry and later for Windows Phone, Nokia, HP web OS, FireFoxOS, Ubuntu Phone etc.


Polis, Cyprus , April 03, 2014 — At last a Polis Chrysochous App hits Samsung Apps Store and Android Play store (soon in iOS App Store, Windows App Store and Blackberry Store) this week. This is the only App about Polis exclusively, and has many interesting features.

In the App you will find almost all Services offered with map location and contact and Internet data, from Government to Hotels, Restaurants & Cafes, Apts, Doctors, and Pharmacy etc. There is a Save to your Device Contacts button for each contact. There is a Search-Polis page where you can search all Polis data. You will find also the Cyprus & Polis emergency telephones and other important numbers. Just press to call the number or sms or save in your Device Contacts. News/Announcements/Events & Special Offers in Polis Pages exist and updated weekly. And also Contact Us, About Polis & about Cyprus Facts Pages.

Also there is Map functionality with map tracking, in all App… From Services, Attractions to Travel Notes (where Note taken)…GPS & Internet connections required for using this. Also there is a photo gallery with slide show auto play functionality, Flickr photos, a third party Video from YouTube about Polis & Latchi, and Cyprus weather link page.

Travel Notes embedded feature let you get your Travel Notes and record map location Note taken at (if you like) and the date and time, along with title & description. You can search your Travel Notes too.

Photo Share feature lets you upload your Polis photos (20 uploads total per account) but will be Public and cannot be deleted – in the next version will be delete your photos button. Also there are login, logout, upload, and camera pages along view All Photo Uploads page plus view My Uploads (only your photos) page. Photos are saved on the Appcelerator ACS Internet service and NOT on your device, so Internet required using this.


To Download the App just surf to Samsung Apps Store or go to App Web Site!

Samsung Apps Download



https://play.google.com/store/apps/details?id=org.polischrysochous.polisappxdk2     [1.0.1 – Summer 2015]

Amazon Fire Apps Download





http://appworld.blackberry.com/webstore/content/59942751/?lang=en   [Sept 2014]





http://www.windowsphone.com/en-us/store/app/polis-travel-guide-cyprus/a89d548d-f003-4722-a781-ae9f031daac2    [Dec 2014]


Soon in (for 2.99$) :



App Web Site: www.ps2dw2.mobi  or http://www.polischrysochous.org
Or free try here (limited features): http://demo.polischrysochous.org/



Chrome Web Store App – Free Demo


About L web dev net

L web dev net(LSE freelance Developer)  is a web and mobile development office in Polis – Cyprus. We develop native Android mobile Apps as well as Cross Platform HTML5 hybrid mobile Apps. We also develop Chrome and Facebook Apps and Responsive Web Sites (and Mobile Web Apps) in general.

We can be reached at www.L-web-dev.net or 00357-99300548.



Leonidas Savvides (Freelance Web/Mobile Developer/Designer)

skype: lwdlse  , twitter: @lwdlse
00-357-9930-0548 (sms/voice – mobile)



# # #


Polis Travel Guide App

Polis Travel Guide App 1.4.3 released for Android

Note: Polis Travel Guide have been released for BlackBerry 10 Smart Phones & Tablets on Wed 22/10/2014. You can DownLoad it here.

Note: Polis Travel Guide have been released for Windows Smart Phones & Tablets 8 on Thu 16/10/2014. You can DownLoad it here.

Also on AndroidYou can DownLoad it here, or for Amazon Fire Android Tablets & Phones.

Leonidas Savvides (@lwdlse) Web/Mobile Developer/Designer in Polis, Cyprus. http://demo.polischrysochous.org/  free Demo to try http://www.ps2dw2.mobi – Polis Travel Guide App – Download We introduce the Polis Travel Guide App 1.0.1 for Android available from the Google Play Store or from Samsung Apps Store for 2.99 $. The App contains essential info for Polis, like contact data of services and shops, useful tel numbers, maps, private travel notes keeper, share publicly your photos with other app users, Polis photo gallery, Flickr Photos Integration, video about Polis(3rd-party), special local offers, events in Polis, instant call a number or sms(or call) if the number is mobile… also ability to save each entry(shop or service contact details) data as a contact entry in your device contacts.

To sms/call a number either

Launch App and in HomePage – main menu choices: Press Useful Tel Numbers ver1.3(or Tel Numbers ver1.0) and press the number.

home page



Or Launch App and in HomePage – main menu choices: Press Search, search for that you want in the search box, and the click it, and in Contact View press the number or if is mobile and want sms, press (SMS) to the left of mobile number. Or Launch App and in HomePage – main menu choices: Press Services and Shops, browse for that Service and in Contact View press the number or if is mobile and want sms it press (SMS) to the left of mobile number. To save a contact details entry press “Save in Device Contacts” in the contact view page and will saved as a contact in your Device Contacts, all contact details included.























To share public your photos with other app users

Launch App and in HomePage – footer choices: Press ShareShots and after sign up for a free account,  upload photos or go to photos. Here you see first 100 uploads of photos from all users and if you want view only your photos press My Photos only In All Photos. You can have up to 20 Public photos per account. (coming Private Photos – delete a Photo function).


photos public share account












To write, view, delete, edit your private Travel Notes

Launch App and in HomePage – footer choices: Press TravelNotes, and then press Enter. To Write a note Press NEW Entry. To view/edit a Note press the Note in the HomePage List view. After press Edit or Delete or Back to return back. Or, press view Map to see the Map note taken at if GPS was enabled.










































What do you want to see next from Polis Travel Guide App. Let us know in the comments section below (or at PolisApp@ps2dw2.mobi ), after you play with the latest version. Help shape the future of Polis town. Note: App coming for BlackBerry 10,  Win 7 / Win 8 Phone, phones/tablets in October 2014, and in the November 2014 for iOS. Coming features are  public chat room page inside the App, for App users, and delete your photos and private photos functionality, and Social integration Facebook & Twitter. Leonidas Savvides Web/Mobile Developer/Designer in Polis, Cyprus. @lwdlse http://demo.polischrysochous.org/  free Demo to try http://www.ps2dw2.mobi – Polis Travel Guide App – Download http://leonidassavvides.com/blog/2014/03/02/pr-polis-travel-guide-app/ – PR

Android Apps MarketPlaces

Android Apps MarketPlaces

Android Apps may get downloaded & installed from:


https://play.google.com/store/apps former Google App Market Place



















Mfg Sites:





www.amazon.com/b?node=2350149011 Android App Store only for US



http://www.gsmarena.com/ http://www.androidphonesarena.com


Note: this article in Under Development, please check back soon!
Also coming Android/Java/Eclipse Forums List/Article!

The benefits and drawbacks of modern technology

When someone refers for today’s modern technology, surely he refers to the 21st century, Information Age and the Internet as the communication media of the new millennium. Of course this 17 year history of the Internet brought indirectly many significant advances in other Science and Technology fields. Without doubt Internet changed our lives for ever decisively and absolutely.

Today, just with a PC and an internet connection, without additional costs you can send instantly and receive instantly messages(emails) from the other corner of the world just not long before ago you have to await letter to get to recipient in about 7 days if not lost in transit and other so the reply to return to you. Now you can find almost any piece of info with a web browser and chat (eg.Skype), again freely using text, audio or even video.

Another area of technology bring change to us, is Mobile Communications. We are NOT away from the fact each individual, will posses a mobile phone for fun or for business, anywhere he is in the world, anytime. Today exists such services in the mobile world as talking, Small Message Service (SMS), Multimedia Message Service (MMS), or chatting with text, and also accessing the Internet from mobile phone using either wifi access point or 3G cellular internet, and hence you may browse or send email or use some other service of the Internet, anywhere and anytime. Coming is Mobile video calling.

Of course Mobile Communications is very closely related to the Internet, both networks belonging to Electronic Age Revolution of computers in general. This top edge of technology brings us many benefits as well as drawbacks too.

Benefits include fast and more accurate communications and business. Now for example in case of danger eg car accident away from the town, you can use your mobile to call the emergency number immediately and authorities to find automatically using cellular network services, your position on the map you call from, so help come accurately and immediately.

Internet makes us more Socialable people in all steps of life, Social Internet Networks are on rise these days. Now our time is better spent, and use efficiently. Rather use snail mail now we are using email, rather use standard telephone network call now we are using chatting via text, audio, video and file transfer. Almost now any info can get accessed via a web browser using an Internet search engine.

Chatting etc services brings fun, work and education too. Leaning online is a consequence of all these. Now universities provide part or full degrees online. This use of internet technology tools and cost is only from university fees. Also language learning can be taken with technology and resources of the Internet. All these are a click away.

As of security now when you are away, you can watch your office or home via security cameras through the internet. Also when you plan a trip domestic or international, on the Internet you can plan and book everything for it. Also, your Bank can accessed via internet banking with a web browser, so as access accounts, transfer money, order replacements etc.

On the other hand beyond these benefits, Internet Age brings and some subtle drawbacks.

Now when you are online your Internet PC without even know it can get compromised by bad guys, that can stole anything from company data to credit card numbers covering their tracks. The attacks can be done on Internet Servers as well, making services unavailable, may be in emergency sometimes. Banks are on instant danger for example, a bad guy may change account data and more.

Of course many anti-criminal tools exist like anti-virus tools, anti-malware, anti-spyware and so on, that must be considered by any Internet user.

Of course as internet makes us smarter, so does smarter the street thieves too. So we must be careful in using all of our possessions, and especially credit cards in front of cameras in all steps of life. Thieves continue to discover new ways, to draw your attention, and so on and so forth.

Finally I think new technology has brought many advantages and drawbacks. People behind the internet and technology think well before they create it, so as to advance our lives and NOT to degrade it. So in my opinion I believe, modern technology has brought more goods to us, rather than drawbacks. In case of drawbacks exist always an anti solution. Technology is going to advance, but as we proceed this is going more slowly, and it will stay good for us, in all its way.