You probably never use the command line. People like me who use pipelines on *nix [1] every day write these sorts of filters all the time. [1] http://en.wikipe

You probably never use the command line. People like me who use pipelines on *nix [1] every day write these sorts of filters all the time. [1] http://en.wikipedia.org/wiki/Pipeline_%28Unix%29#Pipelines_in_command_line_interfaces http://en.wikipedia.org/wiki/Pipeline_%28Unix%29#Pipelines_i...