Sometimes you have some calculation with an indeterminate order of columns that
you would like to make deterministic. A concrete example is in the comment at
the end of ndup/.
That is where colSort comes in. The --skip facility lets you skip over
an initial block of in-row header text you do not want to sort.
colSort [optional-params]
Copy input->output lines, sorting columns [skip:] within each row.
-p=, --pi= string "" path to input ; "" => stdin --po= string "" path to output; "" => stdout -i=, --iDlm= string "\t" input delimiter; w => repeated whitespace -o=, --oDlm= char '\t' output delimiter byte -s=, --skip= int 0 initial columns to NOT sort within rows