sed-delete-blank-lines

#!/bin/bash
#
# Delete all blank lines, i.e. lines with no characters.
#
# From http://sed.sourceforge.net/sed1line.txt
#
# Version: 1.1.0
# Created: 2011-01-02
# Updated: 2015-01-25
# License: GPL
# Contact: Joel Parker Henderson (joel@joelparkerhenderson.com)
##
set -euf
sed '/^$/d'