Comments on: Magic Pipes

By: alaric

alaric — Thu, 13 Aug 2009 10:12:07 +0000

foof (author of the aforementioned fmt egg) made a good suggestion on IRC: As well as supporting the -e flag for a sort expression, for the common case of -e "(foo INPUT)", we can have a shorthand of -k foo, where foo is any function (eg, cadr).

By: alaric

alaric — Tue, 30 Jun 2009 09:41:05 +0000

Ah, cadr is a shorthand function for (car (cdr ...))

If INPUT is (a b), then (car INPUT) is a, (cdr INPUT) is (b), and (cadr INPUT) is (car '(b)) which is just b.

By: @ndy

@ndy — Tue, 30 Jun 2009 07:54:11 +0000

sort -t, -k3

In the cheese example, what is cadr? | sort -e "(cadr INPUT)" -c "(string<? A B)" Should it be cdr?

By: Ben

Ben — Thu, 25 Jun 2009 11:51:14 +0000

Check out Windows PowerShell. Instead of returning text, it returns objects, which can then be operated on by the next command in sequence.

Actually looks quite shiny.