It looks like you are just matching, rather than substituting. Try 
($BKSIC_MODEL[$i] = substr ($line, 3, 7)) =~ s/^\s*(\S*)\s*$/$1/;

[download]

Dave

UPDATE
My mistake. Forgot my parens around $BKSIC_MODEL[$i] = substr ($line, 3, 7). Fixed now.

In reply to Re: Removing spaces, again. by dfog
in thread Removing spaces, again. by akm2

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