Blank rows as well as blank columns are evaluated as zero. Use rmblank to remove blank rows if this is not desirable.

-fc

use c (instead of TAB) as the input column separation character.

-Dn

turn on debugging at level n, or 1 if n is not specified.

-l

this option causes all of the rows to be printed.

-pn

print deviations with a precision of n places to the right of the decimal.

$ stdev -l -p2 Value Cost < inventory
Item    Amount  Cost    Value   Description
----    ------  ----    -----   -----------
1       4       50.1            rubber gloves
2       100     5.2345  500     test tubes
3       5       80      400     clamps
4       23      19      437     plates
5       99      24      2376    cleaning cloth
6       89      147     13083   bunsen burners
7       5       175     875     scales
----    ------  ----    -----   -----------
                66.27   4718.19