bars : show column data as histograms
Copyright 2006 Tim Menzies
Usage: bars [FLAGS] FILE
        
FILE is columns of data.
        
        -b NUM    width of bars; default=[20]
        -c        show copyright
        -d CHAR   field seperator
        -h        show help
        -k NUM    width of 'key' column;default=[4]
        -m CHAR   character to draw one histogram dot; default=[*]
        -n        no sorting of keys
        -t NUM    target column; default=[2]
        -v NUM    width of 'value' column; default=[3]
        -w NUM    width of each data bin; default=[10]