Problem scenario
You are trying to search a file for left double quotes and right double quotes (e.g., using a Linux command terminal or a vi editor). How do you enter left double quotes or right double quotes using a keyboard (without copying the apparently italicized double quotes from a web page)?
Solution
Hold Alt, and then enter the sequence 8220 for left double quotes.
Hold Alt, and then enter the sequence 8221 for right double quotes.