#fsdb size n
1024 1
10240 1
102400 1
#  | dbsetheader size bw
#  | /home/johnh/BIN/DB/dbmultistats size bw
#  | /home/johnh/BIN/DB/dbcol size mean stddev pct_rsd
#  | dbroweval -b '{ @out_args = (-cols => [qw(size n)]); }'  '{ $ofref = [ _size, 1 ]; }'
