Stack overflow
How to install virtualenv without using sudo?
https://stackoverflow.com/questions/9348869/how-to-install-virtualenv-without-using-sudoHow to avoid "Permission denied" when using pip with virtualenv
https://stackoverflow.com/questions/19471972/how-to-avoid-permission-denied-when-using-pip-with-virtualenv
General
create virtualenv permission denied - Google Search
https://www.google.com/search?ei=vPcsXYSdD7LH5gLk9LXICw&q=create+virtualenv+permission+denied&oq=create+virtualenv+permission+denied&gs_l=psy-ab.3...12218.13043..13199...0.0..0.147.659.6j1......0....1..gws-wiz.......0i71j35i304i39j0i13j0i13i5i30j0i8i13i30.lhOjCCDRYhY