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Full Discussion: How to remove empty line.?
Top Forums Shell Programming and Scripting How to remove empty line.? Post 302975746 by MadeInGermany on Friday 17th of June 2016 04:24:00 PM
Old 06-17-2016
Skip to the next loop cycle if $p is empty
Code:
while read p
do
  [ -z "$p" ] && continue
  para="${para:+$para,}'$p'"
done < file

The para= is a simple variant of your complex expression and works in all Posix compatible shells.

Last edited by MadeInGermany; 06-18-2016 at 12:18 PM.. Reason: Added missing $para
 

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GJOTS2DOCBOOK(1)					      General Commands Manual						  GJOTS2DOCBOOK(1)

NAME
gjots2docbook - Convert a gjotsfile to DOCBOOK (on stdout) SYNOPSIS
gjots2docbook -a|-b [ -e ] [ -P ] [ -p ] [ gjotsfile ] DESCRIPTION
gjots2docbook converts a gjotsfile into DOCBOOK XML. gjots2docbook uses awk(1) to perform the conversion. gjots2docbook does not create them so the first element in the file should contain any <bookinfo> or <artheader> element. Similarly, <bib- liographic> elements are not created. In fact the output is very simplistic with item titles in the gjotsfile being converted to chapter or section headings in DOCBOOK. There is no reason why your gjotsfile should not contain valid DOCBOOK XML - and that is why the -e and -p op- tions are provided. If the file does not start with <?xml ...> then appropriate lines will be added as follows: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE doc_type PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"> If properly installed, the docbook utilities can then be used to create HTML, man, ps, pdf etc files eg: gjots2docbook -b ~/.gjotsfile >gjotsfile.xml docbook2pdf gjotsfile.xml It may be necessary to fine-tune the docbook formatting to access all features. OPTIONS
-a makes a DOCBOOK article -b makes a DOCBOOK book -e don't encode special characters eg < -> &lt; -p don't change blank lines to </para><para> markers -P first section is a preface rather than a chapter (book only) AUTHOR
Written by Bob Hepple <bhepple@freeshell.org> http://bhepple.freeshell.org/gjots COPYRIGHT
Copyright (c) 2002 Robert Hepple This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PAR- TICULAR PURPOSE. SEE ALSO
gjots(1), gjots2html(1), docbook2gjots(1) GJOTS2DOCBOOK(1)
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