Adding pre-req script which installs pip3 and psutil on Ubuntu LTS OS's.

Author: darkwizard242

pre-reqs/install_pre-reqs.bash

@@ -0,0 +1,78 @@
+#! /bin/bash
+
+## This script installs pre-requisites for system-info python modules on Ubuntu's LTS version of OS machines.
+## Easy to use script when initializing either of the systems with Vagrant or in isolation.
+
+## Tested on Ubuntu 16.04 xenial & 18.04 bionic
+
+
+if [ "$(grep -Ei 'ID=ubuntu|VERSION_ID="16.04"' /etc/os-release)" ];
+then
+	echo "OS is Ubuntu." && echo
+	if [ "$(grep -Ei 'VERSION_ID="16.04"' /etc/os-release)" ];
+	then
+		echo "OS Version is 16.04 i.e. Ubuntu 16.04 xenial. Python 3.5.2 is available by default on the system." && echo
+		echo "Beginning of pre-requistes & installation of pip3 and psutil." && echo
+		echo "Performing apt-get update" && echo
+		sudo apt-get update -y
+		sleep 30
+		echo
+		echo "Printing the existing Python3's version." && echo
+		python3 -V
+		echo "Installing Python3's PIP and other tools." && echo
+		sudo apt-get install -y python3-pip build-essential libssl-dev libffi-dev python-dev
+		echo "Installing psutil library using pip" && echo
+		sudo pip3 install psutil	# Installing psutil
+		sleep 30
+		echo
+		echo "Installation of pre-reqs has been completed!" && echo
+	elif [ "$(grep -Ei 'VERSION_ID="18.04"' /etc/os-release)" ];
+	then
+		echo "OS Version is 18.04 i.e. Ubuntu 18.04 bionic. Python 3.5.2 is available by default on the system." && echo
+		echo "Beginning of pre-requistes & installation of pip3 and psutil." && echo
+		echo "Performing apt-get update" && echo
+		sudo apt-get update -y
+		sleep 30
+		echo
+		echo "Printing the existing Python3's version." && echo
+		python3 -V
+		echo "Installing Python3's PIP and other tools." && echo
+		sudo apt-get install -y python3-pip build-essential libssl-dev libffi-dev python-dev
+		echo "Installing psutil library using pip" && echo
+		sudo pip3 install psutil	# Installing psutil
+		sleep 30
+		echo
+		echo "Installation of pre-reqs has been completed!" && echo
+	else
+		echo "OS is not one of the LTS ubuntu versions."
+	fi
+else
+	echo "This was scripted for LTS version of Ubuntu OS's. Either the OS/Version is not Ubuntu or a LTS version of OS. Please contact Ali Muhammad (https://github.com/Tech-Overlord) to add the required Ubuntu OS version into the script."
+fi
+
+# if [ "$(grep -Ei 'ID="centos"|CENTOS_MANTISBT_PROJECT_VERSION="7"' /etc/os-release)" ];
+# then
+   # echo
+   # echo "OS is CentOS & Version is 7 i.e. CentOS-7" && echo
+   # echo "Beginning of pre-requistes & docker installation." && echo
+   # echo "Performing update." && echo
+   # sudo sudo yum update -y
+   # sleep 30
+   # echo
+   # echo "Installing yum-utils" && echo
+   # sudo yum install yum-utils -y
+   # sleep 5
+   # echo
+   # echo "Installing IUS" && echo
+   # sudo yum install https://centos7.iuscommunity.org/ius-release.rpm -y
+   # echo "Installing Python3.6 - Latest stable version at the time of this script's development." && echo
+   # sudo yum install python36u -y
+   # sleep 30
+   # echo
+   # echo "Installing Python 3.6's pip" && echo
+   # sudo yum install python36u-pip -y
+   # sleep 10
+   # echo "Installing psutil library using pip" && echo
+   # sudo pip3.6 install psutil	# Installing psutil
+   # echo "Installation of pre-reqs has been completed!" && echo
+# fi