freq2gnuplot.rb has been obsolete.
  freq2gnuplot.rb reads BAND and print gnuplot style data text to
  standard output (STDOUT). The number of phonon modes must be
  specified.
  
usage
   
	freq2gnuplot.rb [BAND] N
	  N = the number of phonon modes
   option
   
--factor
    
Unit conversion factor. VASP users may use 15.633 in THz or
     521.47 in cm .
.
     
default = 1.0
     
togo
2009-02-12
