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Full Discussion: sed: delete regex line and next line if blank
Top Forums Shell Programming and Scripting sed: delete regex line and next line if blank Post 302237648 by one71 on Thursday 18th of September 2008 05:22:01 AM
Old 09-18-2008
sed: delete regex line and next line if blank
Hi,

I want to write a sed script which from

Code:
batiato:

batiato/giubbe:
pip_b.2.txt
pip_b.3.txt
pip_b.3mmm.txt

bennato:

bennato/peterpan:
123.txt

consoli:
pip_a.12.txt

daniele:

daniele/anna:
abc.txt

procuces

Code:
batiato/giubbe:
pip_b.2.txt
pip_b.3.txt
pip_b.3mmm.txt

bennato/peterpan:
123.txt

consoli:
pip_a.12.txt

daniele/anna:
abc.txt

I would imagine something like:
"if a line containing ":" is followed by an empty line delete both lines (the line with ":" and the empty line)"
i.e. something like in general
if a line containing regex1 is followed (immediately after) by a line containing regex2 delete both lines.

if it would be on one line I would do: sed '/regex1.*regex2/d' -->
how to spread this command on 2 lines? And consider hat in my case regex2 is an empty line ( i.e. ^$).

thanks
 

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LEARN ABOUT REDHAT

pdbtxt2html

pdbtxt2html(1)						      General Commands Manual						    pdbtxt2html(1)

NAME

       pdbtxt2html - Doc Text to HTML converter for Palm Pilots

SYNOPSIS

       pdbtxt2html [ -t ] file.txt [ file.html ]
       pdbtxt2html -v

DESCRIPTION

       pdbtxt2html converts text converted from a Doc(4) file via txt2pdbdoc(1) to HTML.  If no HTML filename is given, the generated HTML is sent
       to standard output.

   Document Title
       The first line of the file is used for the HTML document title.

   Bookmarks
       The last line of the file is examined and, if it contains a string enclosed between < and >, that is taken to be the bookmark marker.   The
       entire file is then scanned looking for lines beginning with it (ignoring leading whitespace).  These lines are converted to HTML headings.

       The  number  of whitespace characters after the first bookmark marker is used for heading level 1.  The level of subsequent headings is set
       to the number of whitespace characters between the bookmark marker and the bookmark text minus the number for the first bookmark plus one.

   Embedded URLs
       Valid URLs (according to RFC 1630) embedded in the text are turned into hyperlinks.  The ftp, gopher, http, https,  mailto,  news,  telnet,
       and wais URLs are recognized.

OPTIONS

       -t   Compile a table of contents and insert it between the first heading and the body.

       -v   Print the version number to standard output and exit.

EXAMPLE

       To convert a Doc file to HTML:

	    txt2pdbdoc alice.pdb alice.txt
	    pdbtxt2html alice.txt alice.html

SEE ALSO

       html2pdbtxt(1), txt2pdbdoc(1), doc(4), pdb(4)

       Tim Berners Lee.  Universal Resource Identifiers in WWW, Network Working Group of the Internet Engineering Task Force, June 1994.
	    http://info.internet.isi.edu/in-notes/rfc/files/rfc1630.txt

AUTHOR

       Paul J. Lucas <pauljlucas@mac.com>

txt2pdbdoc							 January 21, 2005						    pdbtxt2html(1)
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