This is what I have now.   I am not able to print out each line of the 
file /tmp/lg_files.   There is no output.  What am i missing?

#!/usr/bin/ruby

system('find /var -type f -size +20000 >> /tmp/lg_files')
#do this in a block so it closes the file afterwards:
File.read("/tmp/lg_files") do |f|
contentsArray=[]  # start with an empty array
   f.each_line {|line|
   #a = contentsArray.push line
        b = File.size contentsArray.last
   puts b
}
end
#system('> /tmp/lg_files')

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