Date: Sun, 22 Apr 2001 15:47:43 +0300 (EEST) From: Maxim Sobolev <sobomax@FreeBSD.org> To: brian@Awfulhak.org, sobomax@FreeBSD.org Cc: brian@Awfulhak.org, kabaev@mail.ru, sheldonh@uunet.co.za, freebsd@gndrsh.dnsmgr.net, bsd@bsdhome.com, schweikh@schweikhardt.net, freebsd-current@FreeBSD.org, brian@Awfulhak.org Subject: =?ISO-8859-1?Q?Re:_cp_-d_dir_patch_for_review_(or_'xargs'=3F)?= Message-ID: <200104221247.PAA94845@ipcard.iptcom.net> In-Reply-To: <200104221216.f3MCGV517027@hak.lan.Awfulhak.org>
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On Sun, 22 Apr 2001 13:16:31 +0100, Brian Somers wrote:
> > On Sat, 21 Apr 2001 20:04:31 +0100, Brian Somers wrote:
> > > > Sorry for butting in. Adding new non-portable functionality to solve the problem
> > > > which could be adequitely taken care of using existing and well known
> > > > techniquies is not appropriate, I completely agree with you on that.
> > >
> > > And I'm still waiting to see those well known techniques.
> >
> > Attached small script should solve this problem and doesn't require
> > introducing incompatible option in the standard tool.
> >
> > For example:
> >
> > find /usr/src -type f | xargs larg cp targetdir
> >
> > For speed purposes it could be implemented in raw C.
> >
> > -Maxim
> >
> > #!/bin/sh
> >
> > if [ ${#} -le 2 ]; then
> > echo "Usage: larg command lastarg arg1 [arg2 ...]"
> > exit 0
> ^
> oops :-)
> > fi
> >
> > COMMAND=${1}
> > LASTARG=${2}
> > shift 2
> > exec ${COMMAND} "${@}" "${LASTARG}"
>
> Yes, I think this will work as long as your environment isn't
> polluted by something like $ENV (any increase in the environment size
> will effect xargs's calculation of how many arguments will fit on the
> command line).
I don't see why it matters. The only thing that matters here is number of
args accepted by the shell. Anyway this is a 2-minute prototype... ;)
As you can see, the problem in fact could be easily solved using "well
known techniques".
> Of course I still prefer the xargs fix - as you said above, it'd be
> nicer in C :-)
I still don't see why it couldn't be an separate tool (perhaps more
general that my prototype).
-Maxim
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