# Asterisk VOIP / SIP compilation in Ubuntu Linux 20.04
# Kwynn Buess 2021/08/28 7:01pm EDT
# See today's blog entry:  https://kwynn.com/t/7/11/blog.html

# do NOT run this blindly / run it as a batch unless you review it and know what you're doing.  There is one potentially 
# dangerous command.

# space requirement is 1.1 GB

# for the first group of commands, you at least need to do "apt update" or else the Asterisk prereq command 
# won't work because apt / aptitude won't have current servers.  Might as well do the rest.  They only take a few minutes.
# This assumes I'm starting from a new AWS instance.  If you've run apt update and upgraded recently enough, there is 
# no need.

sudo timedatectl set-timezone America/New_York
sudo apt update
sudo apt dist-upgrade
sudo reboot

# just making sure you're updated
sudo apt update

# Assumes new AWS instance but not harmful.
# confirm which is the AWS local NVME
sudo fdisk -l

# **********************
# **********************************************
# BE VERY CAREFUL!!!! ***** THE NEXT COMMAND ASSUMES NEW AWS INSTANCE AND *IS* OTHERWISE HARMFUL ***
# If you are using anything else, skip these steps until I declare it "end of danger" below.
# THIS COMMAND MAY SERIOUSLY MESS UP YOUR LOCAL SYSTEM, SO DO NOT RUN THEM UNLESS YOU KNOW WHAT YOU ARE DOING!!!
# !!!!!  THIS FORMATS (ERASES) A DISK!!!!!!!
sudo mkfs -t ext4 /dev/nvme1n1
# !!!!! BE CAREFUL ABOVE !!!!!! ******
# *************************************************
# end of danger

# the following still assumes you're on an AWS instance with local storage, but it shouldn't damage anything elsewhere
# with that said, don't run these unless you know it's appropriate in your case
mkdir /tmp/nvme
sudo mount /dev/nvme1n1 /tmp/nvme
cd /tmp/nvme
sudo chown ubuntu .

# OK
# GENERAL COMMANDS FOR ANY SYSTEM - end of assumptions about AWS and such
# Do the following wherever you want to download and build Asterisk
# You may want to make it a permanent place to have the sample configs and source for reference
# but you don't need to keep any of this because the binaries and working configs will be installed elsewhere
# You will need 1.1 GB for the following

# check for a new Asterisk version after 18.x.y at the parent:
#    https://downloads.asterisk.org/pub/telephony/asterisk/

wget https://downloads.asterisk.org/pub/telephony/asterisk/asterisk-18-current.tar.gz
gunzip *.gz
tar -xvf *.tar

# Assumes a specific Asterisk version
sudo ./asterisk-18.6.0/contrib/scripts/install_prereq install
git clone -b next git://git.asterisk.org/dahdi/linux dahdi-linux
cd dahdi-linux
make
sudo make install
cd ..
git clone https://github.com/asterisk/dahdi-tools.git
cd dahdi-tools
autoreconf -i
./configure
make
sudo make install
sudo make install-config
cd ..
wget https://downloads.asterisk.org/pub/telephony/libpri/libpri-current.tar.gz
gunzip libpri*.gz
tar -xvf libpri*.tar

# Assumes specific version
cd libpri-1.6.0
make
sudo make install
cd ..

# assumes specific version:
cd asterisk-18.6.0
./configure
make
sudo make install
sudo make samples
sudo make basic-pbx
sudo make config
# control-C will kill asterisk when you're done (maybe 2 or more control-C )
sudo asterisk -cvvvvvvv

# how to get this history without line numbers:
history -w /dev/stdout