Unable to write into directory with vim on 16.04

I'm trying to follow , but I'm getting the error in vim preventing me from inseting the text. I've tried:

sudo chmod 757 -R /var/www

but no luck. How can I save the file with vim?

1 Answer

So you are trying to write to /etc/uwsgi/sites/sample.ini usually items in /etc/ are only writeable by the root user. So you should run your editor with sudo like this

sudo vim /etc/uwsgi/sites/sample.ini