Standard practice for new line is space, space, enter for a new line

Create a new repository on the command line

touch README.md
git init
git add README.md
git add Python-for-Unix-and-Linux-System-Administration.pdf
git commit -m "first commit"
git remote add origin [email protected]:paulxu/Python-for-Unix-and-Linux-System-Administration.git
git push -u origin master