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Full Discussion: Script doesn't work in loop but does if not
Top Forums Shell Programming and Scripting Script doesn't work in loop but does if not Post 302441918 by alister on Tuesday 3rd of August 2010 01:36:20 AM
Old 08-03-2010
You do not understand me correctly.

The value of the IFS variable determines which characters are used to split the result of variable expansion. $movestr expands to the string "cp -R -p ...." and you have modified IFS so that it only splits that string on newlines. For that command to work properly, you need the shell to split on spaces as well .. perhaps tabs. In short, using the default value of IFS. Alternatively, you could use eval. The best solution, in this case, however, is to not use a for loop; use a while read loop and don't mess with IFS (at least not until you've had a chance to study its effects further).

You can confirm that this is the problem by storing the old value of IFS and restoring it before the line: $movestr

Demonstration:
Code:
$ cmd='echo hello world'
$ $cmd
hello world
$ IFS='
> '
$ $cmd
-bash: echo hello world: command not found

 

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LEARN ABOUT DEBIAN

graphics::primitive::insets

Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME

       Graphics::Primitive::Insets - Space between things

DESCRIPTION

       Graphics::Primitive::Insets represents the amount of space that surrounds something.  This object can be used to represent either padding
       or margins (in the CSS sense, one being inside the bounding box, the other being outside)

SYNOPSIS

	 use Graphics::Primitive::Insets;

	 my $insets = Graphics::Primitive::Insets->new({
	   top	   => 5,
	   bottom  => 5,
	   left    => 5,
	   right   => 5
	 });

METHODS

   Constructor
       new Creates a new Graphics::Primitive::Insets.

   Instance Methods
       as_array
	   Return these insets as an array in the form of top, right, bottom and left.

       bottom
	   Set/Get the inset from the bottom.

       equal_to
	   Determine if these Insets are equal to another.

       left
	   Set/Get the inset from the left.

       right
	   Set/Get the inset from the right.

       top Set/Get the inset from the top.

       zero
	   Sets all the insets (top, left, bottom, right) to 0.

AUTHOR

       Cory Watson, "<gphat@cpan.org>"

SEE ALSO

       perl(1)

COPYRIGHT &; LICENSE
       Copyright 2008-2010 by Cory G Watson.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.12.3							    2010-08-21					  Graphics::Primitive::Insets(3pm)
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