Initial commit

Author: Danipulok

python_setup.sh

@@ -0,0 +1,190 @@
+#!/bin/bash
+## shellcheck disable=SC2046
+
+#  For Ubuntu 20.4 LTS.
+#
+#  Copyright (C) 2021 Danipulok <https://github.com/danipulok>
+#
+#  You can redistribute this file and/or modify it under the terms of
+#  the GNU Lesser General Public License as published by the
+#  Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This file is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#  GNU Lesser General Public License for more details.
+#
+#  You can see a copy of the GNU Lesser General Public License
+#  at <http://www.gnu.org/licenses/>.
+
+
+# Pretty print
+function pretty_print {
+    echo -e "\n############################################"
+    echo "$1"
+    echo -e "############################################\n"
+}
+
+
+# Update && upgrade all
+function update_upgrade {
+    pretty_print "Updating && Upgrading"
+    sudo apt update && sudo apt upgrade -y
+}
+
+
+# Add repository for neofetch, python3-pip, python3-venv
+function add_universe {
+    pretty_print "Adding 'universe'"
+    sudo add-apt-repository universe
+}
+
+
+# Install essential packages
+function install_essential_packages {
+    pretty_print "Installing essential packages"
+    sudo apt install -y \
+    neofetch htop git curl \
+    build-essential libssl-dev libffi-dev software-properties-common \
+    python3-pip python3.8 python3-venv pipenv
+}
+
+
+# Install python-3.9 from PPA
+# Pass "-d" to delete PPA after installing python
+function install_python_from_ppa {
+    pretty_print "Installing python from PPA"
+    
+    if [ $# -eq 0 ]
+    then
+        pretty_print "Error. Please pass python version as '3.8' or similar to install one."
+        return 1
+    else
+        python_version=$1
+        python_to_install="python$python_version"
+    fi
+    
+    sudo add-apt-repository ppa:deadsnakes/ppa
+    sudo apt update
+    sudo apt install "$python_to_install"
+    
+    if [[ $* == *-d* ]]
+    then
+        pretty_print "Deleting the PPA repository"
+        sudo add-apt-repository --remove ppa:deadsnakes/ppa
+    fi
+}
+
+
+# Build python from sources
+function build_python_from_sources {
+    if [ $# -eq 0 ]
+    then
+        pretty_print "Please pass python version as '3.8.9' or similar to download and build one."
+        return 1
+    else
+        python_version=$1
+        python_url="https://www.python.org/ftp/python/$python_version/Python-$python_version.tgz"
+    fi
+    
+    pretty_print "Installing packages for buling Python."
+    sudo apt update
+    sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev libsqlite3-dev wget libbz2-dev
+    
+    # ftp-url: https://www.python.org/ftp/python/
+    wget "$python_url"
+    tar -xf "Python-$python_version.tgz"
+    
+    cd "Python-$python_version" || pretty_print "Error. Can't cd to 'Python-$python_version'." && return 1
+    ./configure --enable-optimizations
+    
+    pretty_print "Start building python $python_version"
+    make -j $(nproc) || make -j 6
+    sudo make install
+}
+
+
+# Overwrite default `python` and `pip`
+function overwrite_default_python {
+    if [ $# -eq 0 ]
+    then
+        pretty_print "Please pass python version to be set as default. Exiting function."
+        return 1
+    else
+        username=$1
+    fi
+    
+    sudo update-alternatives --install "/usr/bin/python python /usr/bin/python($1)" 1
+    sudo update-alternatives --set python "/usr/bin/python($1)"
+    sudo ln -s /usr/bin/pip3 /usr/bin/pip
+}
+
+# Create user and add him to the sudo group
+function create_sudo_user {
+    if [ $# -eq 0 ]
+    then
+        pretty_print "Please pass user name to be added. Exiting function."
+        return 1
+    else
+        username=$1
+    fi
+    
+    pretty_print "Adding new user with username '$username'"
+    adduser $username
+    
+    pretty_print "Adding '$username' to sudo group"
+    adduser $username sudo
+}
+
+
+# Change PermitRootLogin to `without-password`
+#https://security.stackexchange.com/questions/174558/
+function secure_server {
+    sudo sed -i '/^PermitRootLogin/s/yes/without-password/' /etc/ssh/sshd_config
+    sudo sed -i '/^#PermitRootLogin prohibit-password/s/#PermitRootLogin prohibit-password/PermitRootLogin without-password/' /etc/ssh/sshd_config
+    sudo sed -i '/^#PasswordAuthentication yes/s/#PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config
+}
+
+
+# Install docker
+# https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-20-04
+function install_docker {
+    pretty_print "Installing docker"
+    sudo apt update
+    sudo apt install apt-transport-https ca-certificates curl software-properties-common
+    
+    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+    sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable"
+    
+    sudo apt update
+    sudo apt install docker-ce
+}
+
+# Add current user to Docker running group
+function give_current_user_docker_privileges {
+    pretty_print "Giving current user privileges to run docker"
+    sudo usermod -aG docker $(whoami)
+}
+
+# Essential
+update_upgrade
+add_universe
+install_essential_packages
+
+# Install other python version
+# pass "-d" in case you want to delete PPA after installing Python
+install_python_from_ppa 3.8 -d
+# build_python_from_sources 3.8.9
+overwrite_default_python 3.8
+
+# New user
+create_sudo_user danipulok
+su - danipulok
+
+# Additional
+install_docker
+give_current_user_docker_privileges
+
+# ONLY AFTER ADDING SSH KEYS.
+# secure_server