### Start Vagrant Machine for FullPageOS Build

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Starts the Vagrant machine and provisions it for building FullPageOS.

```bash
cd FullPageOS/src/vagrant
sudo vagrant up
```

--------------------------------

### Install unclutter

Source: https://github.com/guysoft/fullpageos/wiki/Hide-mouse-cursor

Install the unclutter utility to manage mouse cursor visibility.

```bash
apt-get install unclutter
```

--------------------------------

### Install CEC Client Utilities

Source: https://github.com/guysoft/fullpageos/wiki/Control-TV-over-HDMI

Install the necessary package for controlling HDMI-CEC devices from the command line.

```bash
sudo apt install cec-utils
```

--------------------------------

### Run HyperPixel4 Installer Script

Source: https://github.com/guysoft/fullpageos/wiki/Pimoroni-HyperPixel-4.0"-for-Raspberry-Pi-3B--or-older

Navigate to the cloned directory and execute the install script with sudo privileges to set up the HyperPixel4 display.

```bash
cd hyperpixel4
sudo ./install.sh
```

--------------------------------

### Install Build Dependencies

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Installs necessary packages for building FullPageOS.

```bash
sudo apt install coreutils p7zip-full qemu-user-static
```

--------------------------------

### Start Vagrant Environment

Source: https://github.com/guysoft/fullpageos/blob/devel/src/vagrant/instructions.rst

Starts the Vagrant virtual machine and environment. This command requires sudo privileges.

```bash
sudo vagrant up
```

--------------------------------

### Install Vagrant and NFS Dependencies

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Installs Vagrant, NFS server, and VirtualBox for building FullPageOS with Vagrant.

```bash
sudo apt-get install vagrant nfs-kernel-server virtualbox
sudo vagrant plugin install vagrant-nfs_guest
sudo modprobe nfs
```

--------------------------------

### Enable Systemd TV On Service

Source: https://github.com/guysoft/fullpageos/wiki/Control-TV-over-HDMI

Enable the previously created systemd service to ensure it starts automatically on boot.

```bash
sudo systemctl enable tv-on
```

--------------------------------

### Install Vagrant and NFS Server

Source: https://github.com/guysoft/fullpageos/blob/devel/src/vagrant/instructions.rst

Installs Vagrant and the NFS kernel server required for shared folders. Ensure you have sudo privileges.

```bash
sudo apt-get install vagrant nfs-kernel-server
```

--------------------------------

### Install Vagrant NFS Guest Plugin

Source: https://github.com/guysoft/fullpageos/blob/devel/src/vagrant/instructions.rst

Installs the vagrant-nfs_guest plugin, which helps manage NFS shares within the guest VM. Requires sudo privileges.

```bash
sudo vagrant plugin install vagrant-nfs_guest
```

--------------------------------

### Complete config.txt for Display Rotation (Raspberry Pi 4)

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

A comprehensive example of `/boot/config.txt` settings for Raspberry Pi 4, including display rotation, GPU memory allocation, and disabling newer display drivers to enable legacy configuration.

```config
# ......config

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
# disabling, since fkms does not allow rotation via config.txt
# https://www.raspberrypi.com/documentation/computers/config_txt.html#display_hdmi_rotate
#dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
# enable raspicam
start_x=1
# gpu_mem=128
disable_splash=1
# disable all new rpi4 display driver, use legacy by commenting out dtoverlay
# https://www.raspberrypi.com/documentation/accessories/display.html
# dtoverlay=vc4-kms-v3d

# increase gpu_mem for display rotate
gpu_mem=256
# Rotate HDMI screen
# 1 is 90 degrees. 2 is 180 degress. 3 is 270 degrees.
display_hdmi_rotate=1
# only for lcd screens # 180?
# display_lcd_rotate=1
# only used for syncing touch wich screen 1=180? flip?
# lcd_rotate=1
```

--------------------------------

### Transfer Extension Build Files via rsync

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Example of using rsync to transfer extension build files to the FullPageOS device.

```bash
rsync -av <extension-build-folder>/ pi@fullpageos.local:extensions/<extension-name>/
```

--------------------------------

### Remove SingletonLock File

Source: https://github.com/guysoft/fullpageos/wiki/Screen-black-after-hostname-change

Execute this command to remove the SingletonLock file, which is often the cause of a black screen after a hostname change. This action allows Chrome to start properly on reboot.

```bash
rm -rf /home/pi/.config/chromium/SingletonLock
```

--------------------------------

### Get Raspberry Pi IP Address

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Retrieves the IP address of the Raspberry Pi, useful for remote access.

```bash
hostname -I
```

--------------------------------

### Turn TV On using cec-client

Source: https://github.com/guysoft/fullpageos/wiki/Control-TV-over-HDMI

Execute this command to send an 'on' signal to the TV via HDMI-CEC. Ensure the TV is connected and HDMI-CEC is enabled.

```bash
echo 'on 0.0.0.0' | cec-client -s -d 1
```

--------------------------------

### Systemd Service to Turn TV On at Boot

Source: https://github.com/guysoft/fullpageos/wiki/Control-TV-over-HDMI

Create a systemd service file to automatically turn the TV on when the Raspberry Pi boots up. This ensures the TV is ready when the system is operational.

```systemd
[Unit]
Description=Turn TV on using cec-client
After=network.target

[Service]
Type=simple
ExecStart=/bin/bash -c "echo 'on 0.0.0.0' | cec-client -s -d 1"

[Install]
WantedBy=multi-user.target
```

--------------------------------

### Clone FullPageOS and Dependencies

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Clones the FullPageOS and CustomPiOS repositories to prepare for building.

```bash
git clone https://github.com/guysoft/CustomPiOS.git
git clone https://github.com/guysoft/FullPageOS.git
```

--------------------------------

### Disable vc4-fkms-v3d Overlay

Source: https://github.com/guysoft/fullpageos/wiki/PI-3.5-inch-Touchscreen

Modify the /boot/config.txt file to comment out the vc4-fkms-v3d dtoverlay. This is often required for the 3.5-inch touchscreen to work properly.

```diff
-dtoverlay=vc4-fkms-v3d
+ #dtoverlay=vc4-fkms-v3d

```

--------------------------------

### Build a Variant on Vagrant Machine

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Builds a specified variant of FullPageOS on the Vagrant machine.

```bash
cd FullPageOS/src/vagrant
run_vagrant_build.sh [Variant]
```

--------------------------------

### Update CustomPiOS Paths and Build

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Updates build paths and initiates the FullPageOS build process.

```bash
cd ..
../../CustomPiOS/src/update-custompios-paths
sudo modprobe loop
sudo bash -x ./build_dist
```

--------------------------------

### Download Latest Raspbian Image

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Downloads the latest Raspbian Lite image required for building FullPageOS.

```bash
cd FullPageOS/src/image
wget -c --trust-server-names 'https://downloads.raspberrypi.org/raspios_lite_armhf_latest'
```

--------------------------------

### Build a FullPageOS Variant

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Builds a custom variant of FullPageOS. Specify the variant name as an argument.

```bash
sudo bash -x ./build_dist [Variant]
```

--------------------------------

### Configure LightDM to hide cursor completely

Source: https://github.com/guysoft/fullpageos/wiki/Hide-mouse-cursor

Edit the LightDM configuration file to permanently hide the cursor. Uncomment and modify the xserver-command line.

```bash
sudo nano /etc/lightdm/lightdm.conf
```

```bash
xserver-command=X -nocursor
```

--------------------------------

### Configure SSH Client for Direct Connection

Source: https://github.com/guysoft/fullpageos/wiki/Monitoring-FullpageOS-devices

Set up your local SSH client configuration to easily connect to a remote FullpageOS device through a jump host using ProxyJump. This simplifies direct access to the device.

```sshconfig
Host my-remote-pi
    User pi # Change this
    ProxyJump myjumphost.example.com
    Hostname localhost
    Port 2222
```

--------------------------------

### Run Nightly Build on Vagrant Machine

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Executes a nightly build on the provisioned Vagrant machine, updating from the 'devel' branch.

```bash
cd FullPageOS/src/vagrant
run_vagrant_build.sh
```

--------------------------------

### Build FullPageOS Script

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

These commands are used to build FullPageOS from within a Debian-based system. Ensure you have the necessary dependencies and sufficient free space.

```bash
sudo apt-get update
sudo apt-get install git
cd ~/
git clone https://github.com/guysoft/CustomPiOS
cd CustomPiOS/
sudo ./build-docker.sh -r fullpageos
```

--------------------------------

### Configure X11 Screen Resolution

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

Create or edit `/usr/share/X11/xorg.conf.d/screen-resolution.conf` to set the desired screen resolution for the HDMI monitor. This requires the monitor identifier to be set previously.

```config
Section "Screen"
  Identifier "HDMI-1"
  SubSection "Display"
    Modes "1920x1080"
  EndSubSection
EndSection
```

--------------------------------

### Load NFS Kernel Module

Source: https://github.com/guysoft/fullpageos/blob/devel/src/vagrant/instructions.rst

Loads the NFS kernel module to enable NFS functionality. This command requires sudo privileges.

```bash
sudo modprobe nfs
```

--------------------------------

### Configure unclutter for delayed hiding

Source: https://github.com/guysoft/fullpageos/wiki/Hide-mouse-cursor

Add this line to your X11 configuration file to hide the cursor after a short delay. Adjust the time in seconds as needed.

```bash
unclutter -idle 0.01 -root
```

--------------------------------

### Clone HyperPixel4 Repository

Source: https://github.com/guysoft/fullpageos/wiki/Pimoroni-HyperPixel-4.0"-for-Raspberry-Pi-3B--or-older

Clone the HyperPixel4 repository to your Raspberry Pi. Use the 'pi3' branch for compatible Pi models.

```bash
git clone https://github.com/pimoroni/hyperpixel4 -b pi3
```

--------------------------------

### Configure X11 Monitor Identifier

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

Create or edit `/usr/share/X11/xorg.conf.d/monitors.conf` to define the HDMI monitor identifier. This is part of configuring screen resolution.

```config
Section "Monitor"
  Identifier "HDMI-1"
  Option "Primary" "false"
EndSection
```

--------------------------------

### Force HDMI Output Configuration

Source: https://github.com/guysoft/fullpageos/wiki/Control-TV-over-HDMI

Add these lines to /boot/firmware/config.txt to ensure the Raspberry Pi always outputs HDMI. Reboot after applying changes.

```config
hdmi_force_hotplug=1
hdmi_drive=2
```

--------------------------------

### Force HDMI Output and Set Mode (Raspberry Pi 4)

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

These settings in `/boot/config.txt` can help resolve display issues on newer Raspberry Pi 4 models by forcing HDMI output and specifying a video mode.

```config
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=82
config_hdmi_boost=4
```

--------------------------------

### Schedule TV Standby and System Shutdown with Cron

Source: https://github.com/guysoft/fullpageos/wiki/Control-TV-over-HDMI

Configure cron jobs to automatically put the TV into standby mode at a specific time and then shut down the Raspberry Pi gracefully. This is useful for nightly routines.

```cron
0 18 * * * echo 'standby 0.0.0.0' | /usr/bin/cec-client -s -d 1
5 18 * * * sudo /sbin/shutdown -h now >/dev/null 2>&1
```

--------------------------------

### Configure SSHD for Autossh User

Source: https://github.com/guysoft/fullpageos/wiki/Monitoring-FullpageOS-devices

Restrict the 'iot' user's SSH capabilities on the jump host to only allow TCP forwarding. Ensure 'GatewayPorts' is set to 'no' to prevent unintended access.

```bash
Match User iot
    AllowTcpForwarding yes
    AllowAgentForwarding no
    X11Forwarding no
    PermitTunnel no
    PermitTTY no
    ForceCommand echo "Port forwarding only"
    GatewayPorts no
```

--------------------------------

### Set up Autossh Systemd Service

Source: https://github.com/guysoft/fullpageos/wiki/Monitoring-FullpageOS-devices

Configure a systemd service on the FullpageOS device to maintain a persistent SSH tunnel using autossh. This service automatically restarts if it fails.

```ini
[Unit]
Description=Persistent SSH tunnel using autossh
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=pi # Change this to your non-root username
Environment=AUTOSSH_GATETIME=0
ExecStart=/usr/bin/autossh -M 0 -N -T -o ServerAliveInterval=30 -o ServerAliveCountMax=3 -o ExitOnForwardFailure=yes -R 2222:localhost:22 iot@jumphost.example.com 
Restart=always
RestartSec=10

[Install]
WantedBy=multi user.target
```

--------------------------------

### Open Terminal in GUI

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

Run this command from tty1 to open an xterm terminal within the graphical environment.

```bash
DISPLAY=:0 xterm
```

--------------------------------

### Rotate HDMI Display (Raspberry Pi 4)

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

Use this configuration in `/boot/config.txt` to rotate the HDMI output on Raspberry Pi 4. Ensure no conflicting `dtoverlay` is set and sufficient GPU memory is allocated.

```config
# 1 is 90 degrees. 2 is 180 degress. 3 is 270 degrees.
display_hdmi_rotate=1
```

--------------------------------

### Rotate Screen via xrandr (Raspberry Pi 4 Option 2)

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

This script snippet rotates the screen using `xrandr` based on the `DISPLAY_ORIENTATION` variable. It's an alternative method for display rotation on Raspberry Pi 4.

```shell
# Rotate screen if needed, see 'xrandr -h' for options.
DISPLAY_ORIENTATION=normal
# optional are: normal left right inverted

if [[ "${DISPLAY_ORIENTATION}" != 'normal' ]]
then
  xrandr --orientation ${DISPLAY_ORIENTATION}
fi
```

--------------------------------

### Disable Connectivity Check in FullPageOS

Source: https://github.com/guysoft/fullpageos/wiki/FAQ

Disable the connectivity check before opening the browser by creating a file named 'check_for_httpd' with the content 'disabled'. This ensures the browser opens regardless of network accessibility.

```bash
echo disabled > "/boot/firmware/check_for_httpd"

```

--------------------------------

### Rotate HyperPixel4 Display

Source: https://github.com/guysoft/fullpageos/wiki/Pimoroni-HyperPixel-4.0"-for-Raspberry-Pi-3B--or-older

Set the screen rotation for the HyperPixel4 display. This command updates touch settings and screen configuration. Available options are left, right, normal, and inverted.

```bash
hyperpixel4-rotate left
```

```bash
hyperpixel4-rotate right
```

```bash
hyperpixel4-rotate normal
```

```bash
hyperpixel4-rotate inverted
```

--------------------------------

### Change VNC Password

Source: https://github.com/guysoft/fullpageos/blob/devel/README.rst

Changes the VNC password for remote GUI access. This is separate from the user password.

```bash
x11vnc -storepasswd
```

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