Cont. This part will describing setup of the Scratch and connecting iPhone.

NVM setup

1. NVM Install

[scratch@localhost ~]$ curl -o- | bash

[scratch@localhost ~]$ echo 'export NVM_DIR="$HOME/.nvm"' >> .bash_profile

[scratch@localhost ~]$ echo '[ -s "$NVM_DIR/" ] && . "$NVM_DIR/"' >> .bash_profile

[scratch@localhost ~]$ source .bash_profile

[scratch@localhost ~]$ nvm install --lts

[scratch@localhost ~]$ nvm use --lts

[scratch@localhost ~]$ sudo yum install git

Server/HTTPD setup

1. Additional packages and httpd install

[scratch@localhost ~]$ sudo yum install epel-release

[scratch@localhost ~]$ sudo yum install

[scratch@localhost ~]$ sudo yum install httpd

[scratch@localhost ~]$ sudo systemctl start httpd

[scratch@localhost ~]$ sudo systemctl enable httpd

Scratch setup

1. Download scratch source code from, click [clone or download] -> [Download zip] -> [Save File] -> [OK]

2. unzip and install

[scratch@localhost ~]$ cd

[scratch@localhost ~]$ unzip Downloads/

[scratch@localhost ~]$ cd scratch-gui-develop

[scratch@localhost ~]$ npm install

[scratch@localhost ~]$ npm run build

[scratch@localhost ~]$ sudo cp -r build/* /var/www/html

Server settings and port open

[scratch@localhost ~]$ sudo groupadd www

[scratch@localhost ~]$ sudo usermod -a -G www scratch

[scratch@localhost ~]$ sudo chown -R root:www /var/www

[scratch@localhost ~]$ sudo chmod 2775 /var/www

[scratch@localhost ~]$ find /var/www -type d -exec sudo chmod 2775 {} +

[scratch@localhost ~]$ find /var/www -type f -exec sudo chmod 0664 {} +

[scratch@localhost ~]$ firewall-cmd --permanent --zone=public --add-service=http 

[scratch@localhost ~]$ firewall-cmd --reload

Setup done

Access to: from Safari on your MacBook.

Wi-Fi Access Point setup

1. Connect to iPhone with USB cable

2. Personal Hotspot enable on the iPhone

3. Enable Internet sharing

– go to [System Preference] -> [Sharing]

– select [Share your connection from:] “Wi-Fi”

– select [To computers using:] “iPhone USB”

– click “Internet Sharing” -> [Start]

– Network icon will be changed 

VirtualBox VM reboot

1. VM Power off (If it’s running)

2. Network Adapter should be changed

– Adapter 1 and 2 is disable

– Adapter 3 should be changed to Bridge Adapter and Name is set to the “iPhone USB” -> [OK]

3. VirtualBox [Start] -> Memo IP Address “170.20.10.XX”

All setup done.

1. Connect to the “MacBook” over Wi-FI from other PCs.

2. Open “170.20.10.XX” by Internet Browser from other PCs.

Go to: Setup Scratch 3.0 server on the VirtualBox, CentOS, for macOS – 1/2