set LASInputFile = `ls *.[Ll][Aa][Ss] | head -1`

set i=`cat $LASInputFile | wc -l`
set j=1

while ($j <= $i)

  set line=`cat $LASInputFile | head -$j | tail -1`

  @ j = $j + 1

  # do your thing with $line here.
  # for this example, we'll just echo
  # it back the screen
 
  echo $line

end