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Update the system sudo apt-get update sudo apt-get upgrade Install pip3: sudo apt-get install -y python3-pip sudo apt-get install python-dev python3-dev libxml2-dev libxslt1-dev zlib1g-dev libsasl2-dev libldap2-dev build-essential libssl-dev libffi-dev libmysqlclient-dev libjpeg-dev libpq-dev libjpeg8-dev liblcms2-dev libblas-dev libatlas-base-dev  Install web dependencies sudo apt-get install -y npm sudo ln -s /usr/bin/nodejs /usr/bin/node sudo npm install -g less less-plugin-clean-css sudo apt-get install -y node-less Install wkhtmltopdf to print PDF reports sudo wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.bionic_amd64.deb sudo apt install -f sudo dpkg -i wkhtmltox_0.12.5-1.bionic_amd64.deb List of users in the system getent passwd Install PostgreSQL sudo apt-get install postgresql Login to admin postgresql user sudo su - postgres Create a new postgres user to access the database from odoo createuser --createdb --username postgres -...

Install postgres sudo apt-get install postgresql Check postgres is running or not pgrep -u postgres -fa -- -D config_file=/etc/postgresql/12/main/postgresql.conf Run database cluster pg_ctlcluster 12 main start Run from service systemctl start postgresql systemctl status postgresql Check running port for postgres sed -n 4p /var/lib/postgresql/12/main/postmaster.pid Creating a new postgres database sudo su - postgres  (Login as postgres user) psql -c "create database db-test-01;" create database db_test_02; Create new user for database access create user dbadmin02 with encrypted password 'whitecat'; Change password if forgot psql ALTER USER dbadmin02 WITH PASSWORD 'whitecat'; Grant the user to access to that database grant all privileges on database db_test_02 to dbadmin02; Setting up firewall sudo ufw allow 22 sudo ufw allow 5432 sudo ufw enable //Allow to connect from anywhere nano /etc/postgresql/12/main/postgresql.conf listen_addresses = '*' //Edit ...

Installing Docker Reference from :  https://docs.docker.com/engine/install/ubuntu/ sudo apt-get remove docker docker-engine docker.io containerd runc sudo apt-get update sudo apt-get install \     apt-transport-https \     ca-certificates \     curl \     gnupg-agent \     software-properties-common Add Docker’s official GPG key: curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - Verify fingerprint sudo apt-key fingerprint 0EBFCD88 Add repo sudo add-apt-repository \    "deb [arch=amd64] https://download.docker.com/linux/ubuntu \    $(lsb_release -cs) \    stable"     Update repo and Install docker engine sudo apt-get update sudo apt-get install docker-ce docker-ce-cli containerd.io Check docker is running ps ax|grep docker Test HelloWorld package sudo docker run hello-world Install docker on windows after instllation, restar tthe PC If the Linux kernel is not update...