Number inserts a new column named Number containing row numbers at the beginning of the table or list. The name by which this command is called determines the way the column name will print.

-n

begin numbering at n.

-fc

c (not TAB) is the column separation character.

-Dn

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

column_name

name the new number column column_name, instead of the default `number' or `Number'. When Number is called with a column_name argument, the first letter will be uppercase in the output.

$ Number -23 item < inventory
Item    Amount  Cost    Value   Description
----    ------  ----    -----   -----------
23      4       50.1            rubber gloves
24      100     5.23    500     test tubes
25      5       80      400     clamps
26      23      19      437     plates
27      99      24      2376    cleaning cloth
28      89      147     13083   bunsen burners
29      5       175     875     scales