How can I generate a diff for a single file between two branches in github

Question

I need to generate a diff for a single file that will show the differences between two versions, which are actually tags in github. I then want to send this diff to someone via

Answer 1

Answer is for people who want to only see (Not to download) the history/reviosion of code changes of a file in the GITHUB WEB Page for previous checkin.

Go to that file in the github, then select HISTORY. This will open page with list of checkin comments link like below.

On clicking on it will show the code changes. After clicking the history; you can click on packages to see package level all files checkins.

In eclipse you can compare the history using EGit plugin and "Right click ->Compare with" on the file. How can I compare two revisions in git in Eclipse?