sed -n option Post: 302832105

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Hi, I have the following command.(Delete all trailing blank lines at the end of a file.) sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' I don't understand the logic of this command and also I don't understand why -e is used. Can you please let me know the logic of this command and why three -e...

LEARN ABOUT SUSE

tk::iconlist

IconList(3)						User Contributed Perl Documentation					       IconList(3)

NAME

       Tk::IconList - an icon list widget

SYNOPSIS

	   use Tk::IconList;
	   $il = $mw->IconList(-browsecmd => sub { ... },
			       -command   => sub { ... })->pack;
	   $il->Add($icon1, $text1);
	   $il->Add($icon2, $text2);
	   $il->Arrange;
	   ...
	   $il->DeleteAll;

DESCRIPTION

   OPTIONS
       -browsecmd
       -command
       -font
	   -item -foreground|-fg

   METHODS
       DeleteAll
	   Deletes all the items inside the canvas subwidget and reset the IconList's state.

       Add($image, $text)
	   Adds an icon into the IconList with the designated image and text.

       Arrange
	   Places the icons in a column-major arrangement.

       Get Return the selected item.

       Invoke
	   Gets called when the user invokes the IconList (usually by double-clicking or pressing the Return key) (internal method).

       See($tag)
	   If the item is not (completely) visible, scroll the canvas so that it becomes visible (internal method).

COPYRIGHT

       The original tkfbox.tcl from Tcl/Tk is:

       Copyright (c) 1994-1996 Sun Microsystems, Inc.

       See the file "license.terms" for information on usage and redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.

       Translated to Perl/Tk by Slaven Rezic <srezic@cpan.org>.

SEE ALSO

       Tk::FBox.

perl v5.12.1							    2007-05-05							       IconList(3)

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Help needed sed: illegal option -- i

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