07-27-2012
ed does edit the file in place, but it slurps it into memory. That's a lot of memory if the file is 38 GiB. Further, some (most?) ed implementations keep a copy of the entire buffer in a tmp file.
If a humongous file (larger than unused storage and available memory) needs to be edited in place, it can be, but you may have to craft a custom solution rather than use a general purpose editor.
Regards,
Alister
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LEARN ABOUT SUSE
xml-xparse
XML-XPARSE(1) User Commands XML-XPARSE(1)
NAME
xml-xparse - Parse XML documents with entity and URI resolution
SYNOPSIS
xml-xparse [options] xmlfile
DESCRIPTION
xml-xparse is a simple command line tool for parsing and validating XML documents. It is not an actual XML parser, it just wraps around a
JAXP Parser, adding support for catalog-based entity and URI resolution.
OPTIONS
-c catalogfile
Load a particular catalog file. May be specified multiple times.
-v Perform a validating parse. This is the default.
-w Perform a well-formed parse, not a validating parse.
-N Perform a namespace-aware parse. This is the default.
-n Perform a namespace-ignorant parse.
-d debuglevel
Set the debug level (an integer). Warnings are shown if the debug level is set to greater than 2.
-E maxerrors
Set the maximum number of errors to display. The default is 10.
FILES
/etc/java/resolver/CatalogManager.properties
The central catalog manager configuration file used by xml-xparse.
SEE ALSO
xml-xread(1), xml-resolver(1), java(1), the OASIS entity resolution technical committee home page at <http://www.oasis-open.org/commit-
tees/entity/>.
AUTHOR
Norman Walsh <Norman.Walsh@Sun.COM>
1.1 July 2004 XML-XPARSE(1)