Add first versions

Readme.md

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+This is just a repository to store the steps for me to install my useful packages. 

Ubuntu/install_steps.md

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+# Install steps for Ubuntu system
+
+# Give sudo privilege to current user
+run `sudo visudo` and add user to sudo group 

Ubuntu/package_install.sh

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+#!/bin/bash
+
+# Run sys update and upgrade
+sudo apt update && sudo apt upgrade
+
+# Install git
+sudo apt install git
+
+# Install gcc & g++ & cmake
+sudo apt install gcc g++ cmake