Re: [PATCH] Cogito documentation updates

From: Petr Baudis <pasky@suse.cz>
Date: Nov 27, 2005, 15:28 UTC
Message-ID: <20051127152827.GJ22159@pasky.or.cz>
In-Reply-To: <Pine.LNX.4.64.0511230923131.13959@g5.osdl.org>

Dear diary, on Wed, Nov 23, 2005 at 06:29:34PM CET, I got a letter where Linus Torvalds <torvalds@osdl.org> said that...

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> 
> 
> On Wed, 23 Nov 2005, Randal L. Schwartz wrote:
> > 
> > Delete the -d switch, or explain to me why it is there, and let's work
> > out a POSIX workaround.
> 
> It's
> 
>        -d:     same as --no-dereference --preserve=link
> 
>        --no-dereference
>               never follow symbolic links
> 
>        --preserve[=ATTR_LIST]
>               preserve   the   specified   attributes   (default:  mode,owner-
>               ship,timestamps) and security contexts, if  possible  additional
>               attributes: links, all
> 
> so it's basically making sure that the copy copies the _link_, not the 
> file it points to.
> 
> I think you may have to use "cpio -p" instead of "cp" to be portable. 
> Something like
> 
> 	cpio -plmu $src $dst
> 
> might do it.

Well, but -l links the files instead of copying them, right? That's certainly not what I want, I want to really _copy_ the files. Also, does cpio preserve the hardlinks between the copied files? If not, then what you wrote is equivalent to

	cp -pRP

which should be even POSIX, hopefully. That's what I changed the -dpR to now.

-- 
				Petr "Pasky" Baudis
Stuff: http://pasky.or.cz/
VI has two modes: the one in which it beeps and the one in which
it doesn't.