I have a application which is developed in PHP using the Symfony 2 framework. I have changed a HTML file, but the change is not reflecting when I refresh the page.
The most simple way, type the command :
rm -rf app/cache/*
The point is: all files in app/cache/ can be removed freely, they are regenerated when needed.
app/cache/
If you really want to clear only twig cache :
rm -rf app/cache//twig
Replace by dev, prod, or test according to your requirements.
dev
prod
test