/^BIND$/ matches if that is the only word on the line.

Try adding word boundaries \b like this ;

while (<DATA>){
  if (/\bBIND\b/){
    print $_;
  }
}
__DATA__
this is a BIND sentence
I have UNBIND in this one
BIND as first word
last word is BIND

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poj

In reply to Re^5: Undefined Error by poj
in thread Undefined Error by johnrein55

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