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Shell Programming and Scripting
extract a line from a file by line number
Post 302513433 by kato on Wednesday 13th of April 2011 08:51:22 AM
04-13-2011
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I have a shell script and want to assign a value to a variable. The value is the line exctrated from a file using the line number. The line number it is not fix, and could change any time.
I have tried sed, awk, head .. See my script
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Hi
I want to extract certain text between two line numbers like
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---------- Post updated at 06:16 PM ---------- Previous update was at 05:55 PM ----------
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LEARN ABOUT DEBIAN
scrollkeeper-devel
scrollkeeper-devel(1) User Commands scrollkeeper-devel(1) NAME
scrollkeeper-devel, scrollkeeper-extract, scrollkeeper-gen-seriesid, scrollkeeper-preinstall - utilities for working with OMF documents and the scrollkeeper database SYNOPSIS
scrollkeeper-extract file stylesheet output [stylesheet output...] scrollkeeper-gen-seriesid scrollkeeper-preinstall docfile omf-file1 omf-file2 DESCRIPTION
scrollkeeper-extract is used internally by scrollkeeper to convert DocBook/SGML files to Docbook/XML files if necessary, and to apply a number of transformations to the XML file to extract information from the XML file. scrollkeeper-gen-seriesid generates a globally unique series ID for an OMF file. scrollkeeper-preinstall reads omf_file1, changes the URL attribute of the identifier tag to doc_file and writes the output to omf_file2. scrollkeeper-preinstall can be used during the document installation process to point OMF files to the correct location on the target machine before registration in the scrollkeeper database. OPTIONS
None. OPERANDS
The following operands are supported: docfile Specifies the file path to the document that omf-file1 describes. file Specifies the XML file that is to be used as input for XSLT transformations. omf-file1 Specifies the OMF file that contains metadata for docfile. omf-file2 Specifies the file created by scrollkeeper-preinstall, which contains the same data as omf-file1 except that the URL attribute of the identifier tag is changed to docfile. output Specifies the file that contains the result when the preceding stylesheet has been applied to file. stylesheet Specifies an XSLT transformation to apply. EXAMPLES
Example 1: Creating a New scrollkeeper Series ID example% scrollkeeper-gen-seriesid Example 2: Extracting a TOC From a Document example% scrollkeeper-extract /path/to/xml/file.xml /usr/share/scrollkeeper/stylesheets/toc.xsl /path/to/toc.xml EXIT STATUS
The following exit values are returned: 0 Application exited successfully >0 Application exited with failure FILES
The following files are used by this application: /usr/bin/scrollkeeper-extract The command-line executable for the scrollkeeper-extract application. /usr/bin/scrollkeeper-gen-seriesid The command-line executable for the scrollkeeper-gen-seriesid application. /usr/bin/scrollkeeper-preinstall The command-line executable for the scrollkeeper-preinstall application. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgnome-libs-devel | +-----------------------------+-----------------------------+ |Interface stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
scrollkeeper(1) NOTES
Written by Sander Vesik, Sun Microsystems Inc., 2003. SunOS 5.10 01 Apr 2003 scrollkeeper-devel(1)