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I run your request and here is the result.

eebf02a20ac27665a966957eec6f5e6fe3228a19  /Applications/Install OS X Yosemite.app/Contents/SharedSupport/InstallESD.dmg

And for Yosemite 10.10.2 the shasum is:

a673c2c6d967f4da2934b7d6cf3736936970b194

Please wait about a minute or two for Terminal to get the number.