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Top Forums Shell Programming and Scripting Sed does not make changes in the file but to the standard output Post 302304301 by indianjassi on Monday 6th of April 2009 05:05:04 AM
Old 04-06-2009
Sed does not make changes in the file but to the standard output

I have an xml file.
I am doing some change, say deleting line 770. File name is file.xml. I use:

sed '770d' file.xml

but this does not actually make changes in the *file* but shows the changes on standard output (screen)

if i use

$var=`sed '770d' file.xml`
echo $var > file.xml

this makes me loose all the formatting of xml (no carriage return is inserted, instead everything is inputted in the form of a single paragraph).
 

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STAG-PARSE(1p)						User Contributed Perl Documentation					    STAG-PARSE(1p)

NAME
stag-parse - parses a file and fires events (e.g. sxpr to xml) SYNOPSIS
# convert XML to IText stag-parse -p xml -w itext file1.xml file2.xml # use a custom parser/generator and a custom writer/generator stag-parse -p MyMod::MyParser -w MyMod::MyWriter file.txt DESCRIPTION
script wrapper for the Data::Stag modules feeds in files into a parser object that generates nestarray events, and feeds the events into a handler/writer class ARGUMENTS
-p|parser FORMAT FORMAT is one of xml, sxpr or itext, or the name of a perl module this is the class that parsers the input file(s) and generates stag events xml assumed as default -w|writer FORMAT FORMAT is one of xml, sxpr or itext, or the name of a perl module this is the class that catches the events thrown by the parser; it can be any class, but the class is typically a writer xml assumed as default -o|out FILE the writer will use this file (defaults to STDOUT) -e|errf FILE file to store parse error handler output -errhandler FORMAT/MODULE FORMAT is one of xml, sxpr or itext, or the name of a perl module all parse error events go to this module -r|root NODE_NAME if this is specified, NODE_NAME becomes the root of the stag tree, and anything that was previously the root is placed below this. this happens automatically if more than one file is parsed (because there can only be one tree root) -color Works only if the output handler is able to provide ASCII-colors (currently supported for itext and xml) SEE ALSO
Data::Stag This script is a wrapper for the method Data::Stag->parse() perl v5.10.0 2008-12-23 STAG-PARSE(1p)
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