Hardlink sub-directories and files
drsalists at gmail.com
Thu Aug 4 02:34:04 CEST 2011
On Wed, Aug 3, 2011 at 2:54 PM, Thomas Jollans <t at jollybox.de> wrote:
> On 03/08/11 23:25, Dan Stromberg wrote:
> > > Interesting. Of course, it's probably readily available to you.
> > > *ix are you seeing that doesn't include cpio by default?
> > Arch Linux - the base install is quite minimal.
So we're probably not talking about portability to Android... Because it's
too minimal, too different?
>> Which implementations of cp don't implement -R and -l?
>> Probably most of them, except GNU and newer BSD.
> Okay. While GNU libc manuals usually document how portable functions
> in detail, that's not true for the GNU coreutils manuals.
You don't really need it in the coreutils doc.
I'd feel very safe assuming that 98+% of all *ix's (not counting Android)
either have cpio installed by default, or can easily get it via their native
The same isn't true of a cp with new features.
> I don't think cpio is in GNU coreutils. Also, I think GNU cpio is a
> reimplementation, not the original.
Indeed. But cp is in the coreutils, and that was what we were talking about.
Sorry. Maybe you should describe what you believe we -are- talking about,
then? I guess I missed that.
I thought it was portability.
> As for GNU cpio, that's simply what /usr/bin/cpio, if present, is
> expected to be on a GNU/Linux system.
Well, yes, but:
1) GNU/Linux is important
2) GNU/Linux isn't the end all and be all
> cpio's been around since PWB/Unix, which sits between 6th Edition Unix
> and 7th Edition. It should be in just about everything, unless a
> vendor/distributor got pretty zealous about cutting duplicate utilities.
I guess this is boiling down to "A pure python solution might be better,
since some folks don't like to use their package managers"
Also, a pure python solution should work on windows - these shell commands
don't unless you have one of the many ports of *ix tools to windows
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