This worked for me in Mavericks, probably works for earlier versions as well:
Open the Terminal
defaults write com.apple.Finder AppleShowAllFiles YES
Now refresh the Finder: right-click on the Finder icon and select “refresh”
Thank you Mikesel for the explanation: http://www.mikesel.info/show-hidden-files-mac-os-x-10-7-lion/
Amazing as it is, Apple has not included a native way of creating a blank file with the Finder. So what people end up doing is copying an existing file and renaming it. Wow!
Apple please take this feedback into account! there are thousands of people wondering why this is not possible within the operating systems, being so great as they are!
It looks to me like the “one-button mouse” issue, when Apple resisted so much to add a second click.
Well, if you arrived here looking for a solution, I cannot give you mine, but refer to others’, namely this one http://apple.stackexchange.com/a/41311
A very useful service is to be able to open the terminal while you are browsing with the Finder. I was using that until I had to reformat the Mac and I did not recall that this feature has to be activated.
Thanks to this answer in Stack Overflow, I learnt how to put it back: http://stackoverflow.com/questions/420456/open-terminal-here-in-mac-os-finder
System Preferences > Keyboard > Keyboard Shortcuts > Services