[comp.emacs] Line number

lee@iris.ucdavis.edu (Peng Lee) (09/08/89)

Greeting 

1)   vi, has command ":set nu" to show the line numbers.  Is there a
similar command for emacs ?

2) (Not a emacs related question) How to use sed to delete empty lines ?

Thanks

-Peng (lee@iris.ucdavis.edu)