Here is how you flush the DNS cache on your OSX El Capitan machine:
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
To make sure that the cache is flushed you could also change your ISP’s DNS server to Google’s DNS: 220.127.116.11 just for the time you do the tests.
Press Alt + Shift + K to display apple logo in a text prompt.
I know, it’s kind of useless tip.
This is very useful when you write a blog post.
You can check grammar from within Safari (or other OSX app like Mail for example) by enabling Grammar Spell Check.
To enable check spelling under Safari go to:
Edit -> Spelling and Grammar -> Check Grammar With Spelling
Then go to:
Edit -> Spelling and Grammar -> Show Spelling and Grammar
You might also want to disable autocorrect:
Edit -> Spelling and Grammar -> Correct Spelling Automatically
If you are using Safari browser in OSX and you want to reload a html page you will notice F5 key that reloads a page under Firefox browser is not working on Safari.
To reload a page in Safari under OSX just press CMD + R keys.