How to Delete an Alias in Mountain Lion
Deleting an alias is an easy chore in Mac OS X Mountain Lion. To delete an alias, simply drag it onto the Trash icon in the Dock. That’s it! You can also Control-click it and choose Move to Trash from the contextual menu that appears, or select the icon and press cmd+Delete.
Deleting an alias does not delete the parent item. (If you want to delete the parent item, you have to go hunt it down and kill it yourself.)
Suppose that you create an alias of a file, and later you want to delete both the alias and its parent file, but you can’t find the parent file. What do you do? Well, you can use the Finder’s Find function to find it (try saying that three times real fast), but here are four faster ways to find the parent icon of an alias:
Select the alias icon and choose File→Show Original.
Select the alias icon and press cmd+R.
Select the alias icon and use the Action menu’s Show Original command.
Control-click the alias icon and choose Show Original from the contextual menu.
Any of these methods opens the window containing the parent document with its icon preselected for your convenience.