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Full Discussion: sed in a for loop
Top Forums UNIX for Dummies Questions & Answers sed in a for loop Post 302124417 by matrixmadhan on Saturday 30th of June 2007 03:58:08 PM
Old 06-30-2007
to have one final copy...

you need to replace as and when sed performs the transformation..

it would be something like..

Code:
sed <code> filename > filename.temp
mv filename.temp filename

and at the end
file with name as <filename> will have all the modifications

There is no difference in using $var and $j. They are variables ( variable names ) you can use them as you wish to.
 

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LEARN ABOUT REDHAT

file::spec::win32

File::Spec::Win32(3pm)					 Perl Programmers Reference Guide				    File::Spec::Win32(3pm)

NAME

       File::Spec::Win32 - methods for Win32 file specs

SYNOPSIS

	require File::Spec::Win32; # Done internally by File::Spec if needed

DESCRIPTION

       See File::Spec::Unix for a documentation of the methods provided there. This package overrides the implementation of these methods, not the
       semantics.

       devnull
	   Returns a string representation of the null device.

       tmpdir
	   Returns a string representation of the first existing directory from the following list:

	       $ENV{TMPDIR}
	       $ENV{TEMP}
	       $ENV{TMP}
	       SYS:/temp
	       C:/temp
	       /tmp
	       /

	   The SYS:/temp is preferred in Novell NetWare.

	   Since Perl 5.8.0, if running under taint mode, and if the environment variables are tainted, they are not used.

       catfile
	   Concatenate one or more directory names and a filename to form a complete path ending with a filename

       canonpath
	   No physical check on the filesystem, but a logical cleanup of a path. On UNIX eliminated successive slashes and successive "/.".  On
	   Win32 makes

		   dir1dir2dir3....dir4 -> dirdir4 and even
		   dir1dir2dir3...dir4   -> dirdir4

       splitpath
	       ($volume,$directories,$file) = File::Spec->splitpath( $path );
	       ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );

	   Splits a path in to volume, directory, and filename portions. Assumes that the last file is a path unless the path ends in '\', '\.',
	   '\..'  or $no_file is true.  On Win32 this means that $no_file true makes this return ( $volume, $path, undef ).

	   Separators accepted are  and /.

	   Volumes can be drive letters or UNC sharenames (\servershare).

	   The results can be passed to "catpath" to get back a path equivalent to (usually identical to) the original path.

       splitdir
	   The opposite of catdir().

	       @dirs = File::Spec->splitdir( $directories );

	   $directories must be only the directory portion of the path on systems that have the concept of a volume or that have path syntax that
	   differentiates files from directories.

	   Unlike just splitting the directories on the separator, leading empty and trailing directory entries can be returned, because these are
	   significant on some OSs. So,

	       File::Spec->splitdir( "/a/b/c" );

	   Yields:

	       ( '', 'a', 'b', '', 'c', '' )

       catpath
	   Takes volume, directory and file portions and returns an entire path. Under Unix, $volume is ignored, and this is just like catfile().
	   On other OSs, the $volume become significant.

       Note For File::Spec::Win32 Maintainers

       Novell NetWare inherits its File::Spec behaviour from File::Spec::Win32.

SEE ALSO

       File::Spec

perl v5.8.0							    2002-06-01						    File::Spec::Win32(3pm)
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