On 01/12/2011 11:43 AM, Jeff Blaine wrote: > I was surprised to find this today. > > The following fails: > > echo /some/place/foo.txt | basename > > This also fails: > > find /somewhere -print | xargs basename > > This *does* work though, somehow, when the above does not: > > echo /some/place/foo.txt | xargs basename > > What is going on here? dirname is the same way.
POSIX requires that basename and dirname be passed arguments; they are
not required to run as filters.
That said, it would be awesome if someone would contribute the patches
to emulate the BSD extensions of:
basename [-a] [-s suffix] string [...]
From there, it's not much harder to implement extensions that 0
arguments is an extension to operate in filter mode (although we may
want to require the use of basename --filter to make it obvious, and we
would certainly want basename --files-from0 to operate on find -print0
output).
But someone has to contribute the patch - are you willing?
--
Eric Blake ebl...@redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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