Linux in a Nutshell, Fourth Edition

Name

D

Synopsis

[address1[,address2]]D
               

Delete first part (up to embedded newline) of multiline pattern space created by the N command, and resume editing with first command in script. If this command empties the pattern space, then a new line of input is read, as if d had been executed.

Example

Strip multiple blank lines, leaving only one:

                  /^$/{
                  N
                  /^\n$/D
                  }