Zoneminder 1.38.x on Supported Debian Versions

Zoneminder 1.38.x from zmrepo

You will have to install sudo and add the user to the sudoers file.

Become root with

su

Install sudo

apt install sudo

Then add the user

/sbin/adduser username sudo 

I recommend rebooting at this point but a log out and back in also works.

Timezone: it is recommended you set your specific timezone with:

timedatectl set-timezone America/New_York

Of course use your timezone in place of America/New_York. Install LAMP (Apache2, MariaDB and PHP. A quick way to install LAMP is:

apt install apache2 mariadb-server php libapache2-mod-php php-mysql lsb-release gnupg2

Become root with sudo su before running this!

Shell script file contents:

#!/bin/sh
clear
read -p "This script installs ZoneMinder 1.38.x on Debian 13 with LAMP installed...
This script must be run as root!
Press Enter to continue or Ctrl + c to quit" nothing
clear
apt install -y lsb-release gnupg2
echo "deb https://zmrepo.zoneminder.com/debian/master "`lsb_release  -c -s`"/" | sudo tee /etc/apt/sources.list.d/zoneminder.list
# The key is stored in the deprecated keyring trusted.gpg.
# wget -O - https://zmrepo.zoneminder.com/debian/archive-keyring.gpg | sudo apt-key add -
wget -O- https://zmrepo.zoneminder.com/debian/archive-keyring.gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/zmrepo.gpg
read -p "Warning! Check above to insure the line says OK. If not the GPG signing key was not installed and you will need to figure out why before continuing. 
Press enter to continue" nothing
apt update
clear
apt install -y zoneminder
adduser www-data video
a2enconf zoneminder
a2enmod rewrite
a2enmod headers
a2enmod expires
service apache2 reload
systemctl enable zoneminder
systemctl start zoneminder

clear
read -p "Install complete. Open Zoneminder by browsing to http://localhost/zm and then go to Options->System and set the timezone. Press enter to continue" nothing
clear

Copy the contents of the script, open a terminal and run:

nano zm-install

Paste the contents of the script into Nano

Then:

Ctrl + o Ctrl + x

Next run:

chmod 755 zm-install

Start the script by entering:

./zm-install

Follow the prompts. Things are pretty simple.

Good Luck!