Read .env file in bash

Let's have example .env file:

example=value
example2=value

then you can read this file like this:

#!/usr/bin/env bash

set -o allexport
[[ -f .env ]] && source .env
set +o allexport

Warning: All existing variables are overridden by .env content.

Install Netatalk 3.x on Raspberry PI

Compile Netatalk from source

Install required Packages

sudo apt install build-essential \
libevent-dev libssl-dev libgcrypt-dev libkrb5-dev libpam0g-dev \
libwrap0-dev libdb-dev libtdb-dev libmariadbclient-dev \
avahi-daemon libavahi-client-dev libacl1-dev libldap2-dev \
libcrack2-dev systemtap-sdt-dev libdbus-1-dev \
libdbus-glib-1-dev libglib2.0-dev libio-socket-inet6-perl \
tracker libtracker-sparql-1.0-dev libtracker-miner-1.0-dev

Remove old version of netatalk:

sudo apt remove netatalk

then download and extract latest version

wget http://prdownloads.sourceforge.net/netatalk/netatalk-3.1.12.tar.bz2 -qO - | tar -xj
cd netatalk-3.1.12/

Do configure!

./configure \
        --with-init-style=debian-systemd \
        --without-libevent \
        --without-tdb \
        --with-cracklib \
        --enable-krbV-uam \
        --with-pam-confdir=/etc/pam.d \
        --with-dbus-daemon=/usr/bin/dbus-daemon \
        --with-dbus-sysconf-dir=/etc/dbus-1/system.d \
        --with-tracker-pkgconfig-version=1.0
make
sudo make install
sudo reboot

Check features and paths, using netatalk -V and afpd -V.

edit /usr/local/etc/afp.conf

[Global]
; mimic model = RackMac

[Homes]
basedir regex = /home

;[My AFP Volume]
;path = /path/to/volume

;[My Time Machine Volume]
;path = /path/to/backup
;time machine = yes
sudo systemctl enable avahi-daemon
sudo systemctl enable netatalk
sudo systemctl start avahi-daemon
sudo systemctl start netatalk

Raspberry PI, Bonjour service, SSH and AFP

Raspbian Stretch Lite (without desktop)

  1. Download Raspbian Stretch Lite
  2. Install Raspbian with etcher to SD card
  3. Boot from SD card...

Basic configuration and Wifi connection

sudo raspi-config
  1. Change User Password :-) (default user pi with password raspberry)
  2. Change Localisation Options
  3. Enable SSH in Interfacing Options
  4. Configure WiFi in Network Options and change Hostname (in my case to pi)

If you have Wifi with hidden SSID, you will need change /etc/wpa_supplicant/wpa_supplicant.conf file and add scan_ssid=1:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=CZ

network={
    ssid="HiddenWifiSSID"
    scan_ssid=1
    psk="and password :)"
}

Reboot (sudo reboot) and then check with iwgetid if you are connected to your Wifi!

Install AFP and Bonjour service

Install netatalk thats provide AppleTalk Filing Protocol (AFP) interface.

sudo apt install netatalk

Install avahi

sudo apt install avahi-daemon
sudo apt install avahi-utils
sudo update-rc.d avahi-daemon defaults

Config AFPD with /etc/avahi/services/afpd.service

<?xml version="1.0" standalone='no'?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
   <name replace-wildcards="yes">%h</name>
   <service>
        <type>_afpovertcp._tcp</type>
        <port>548</port>
   </service>
   <service>
        <type>_device-info._tcp</type>
        <port>0</port>
        <txt-record>model=RackMac</txt-record>
    </service>
</service-group>

PS: RackMac is define icon that will be shown in Finder (there is plenty other options e.g. Windows, Macintosh, TimeCapsule and so on)

Config SSH with /etc/avahi/services/ssh.service

<?xml version="1.0" standalone='no'?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
     <name replace-wildcards="yes">%h SSH</name>
     <service>
          <type>_ssh._tcp</type>
          <port>22</port>
     </service>
</service-group>

Configure avahi daemon

Then in /etc/avahi/avahi-daemon.conf change two parametters host-name and publish-workstation:

[server]
host-name=pi # this row
# ...

[publish]
publish-workstation=yes # this row

# ...

Now Awvvaaaahhhhiii

Enable afp and avahi

sudo systemctl enable netatalk
sudo systemctl enable avahi-daemon

and start them

sudo service avahi-daemon start
sudo service netatalk start

now check if everything works well with

avahi-browse -a | grep $(hostname)

Install nodejs on Raspberry PI 

wget -qO- http://nodejs.org/dist/latest-v11.x/node-v11.5.0-linux-armv6l.tar.xz | tar xvz -C ./nodejs
cd nodejs
sudo cp -R bin/* /usr/bin/
sudo cp -R lib/* /usr/lib/
sudo apt update && sudo apt upgrade
sudo apt install build-essential

Download website mirror with wget 

wget --mirror \
     --convert-links \
     --adjust-extension \
     --page-requisites \
     --no-parent \
     --no-check-certificate http://example.com