Thanks. I was playing with sort
earlier, and was unable to make this work properly. Your solution still has one problem that I need to address, something that I didn't mention above. If there is only one entry, the entry sometimes* gets printed, but I need that result to be empty. Is there an easy way to do this from the shell?
* - I say sometimes, because on bash under linux, it does not get printed due to an extra blank line that somehow gets generated in the output. On AIX and MacOS X, the entry gets printed.