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Full Discussion: [Solved] FOR loop / IF statement returning error
Top Forums Shell Programming and Scripting [Solved] FOR loop / IF statement returning error Post 302848901 by vbe on Friday 30th of August 2013 10:27:03 AM
Old 08-30-2013
Because you cant use $? like that...
Code:
        let DID=$?
        echo DID: $DID
        #let DID=1
        [ $DID != 0 ] && echo "echo failed"
        echo DID: $DID

I set DID to 1 so to see your condition work... in other words your script will run with DID=0 always since the command producing the result of it ($?) at that point is successful...
I know Im not very clear but its friday...

So your script now :
Code:
for NUM in 1 2 3
do
    echo $NUM
    for LET in A B C
    do
        echo $LET
        let DID=$?
        echo DID: $DID
        [ $DID != 0 ] && echo "echo failed"
        echo $?
    done
done

Last edited by vbe; 08-30-2013 at 11:30 AM.. Reason: added modified script
 

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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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