Date: Mon, 28 Dec 2009 10:04:47 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: =?windows-1251?Q?=CA=EE=ED=FC=EA=EE=E2_=C5=E2=E3=E5=ED=E8=E9?= <kes-kes@yandex.ru> Cc: freebsd-questions@freebsd.org Subject: Re: How to force tar to be quiet? Message-ID: <4B3882BF.7060104@infracaninophile.co.uk> In-Reply-To: <1047257846.20091227221031@yandex.ru> References: <1846015154.20091227185106@yandex.ru> <4B37AB6D.3020507@infracaninophile.co.uk> <1047257846.20091227221031@yandex.ru>
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=CA=EE=ED=FC=EA=EE=E2 =C5=E2=E3=E5=ED=E8=E9 wrote:
> =C7=E4=F0=E0=E2=F1=F2=E2=F3=E9=F2=E5, Matthew.
>=20
> =C2=FB =EF=E8=F1=E0=EB=E8 27 =E4=E5=EA=E0=E1=F0=FF 2009 =E3., 20:46:05:=
>=20
> MS> =CA=EE=ED=FC=EA=EE=E2 =C5=E2=E3=E5=ED=E8=E9 wrote:
>>> =C7=E4=F0=E0=E2=F1=F2=E2=F3=E9=F2=E5, Freebsd-questions.
>>>
>>> when
>>> tar -cf file.tar /home/*
>>> It always says:
>>> tar: Removing leading '/' from member names
>>>
>>> man tar
>>> -P Preserve pathnames...
>>> But I do not need to preserve. I want to tar without that warning.
>>>
>>> How to force tar to be quiet?
>>>
>=20
> MS> Don't give the leading '/' in path names. Like so:
>=20
> MS> tar -cf file.tar -C / home
>=20
> MS> Cheers,
>=20
> MS> Matthew =20
>=20
> # tar -cf /home/kes/backup/conf/aaa_etc.tar -C / boot/loader.conf etc/*=
usr/local/etc/* usr/local/virtwww/*
> tar: No match.
Yep. As shown, you don't need '*' here. tar(1) is perfectly capable of =
recursing
through a directory hierarchy given only the name of the top level direct=
ory.
[ * is actually expanded by your shell, rather than tar, so it's trying t=
o match
filenames against your current working directory, and not against the dir=
ectory
the '-C' switches tar to.]=20
> And next does not work as expected:
> # tar -cf /home/kes/backup/conf/aaa_etc.tar -C / boot/loader.conf etc u=
sr/local/etc usr/local/virtwww
>=20
> I get:
> boot
> etc
> mysite
> local
> sub
> usr
> virtwww
Hmmm... I can't reproduce this locally. If I run:
sudo tar -cf foo.tar -C / etc boot
then I get (as expected) a tarball with the contents of /etc and /boot --=
not
only that, but there's nothing printed to stdout/stderr while the command=
runs.
Are any of the directories concerned symbolic links on your system? tar(=
1)
handles sym-links quite carefully given that it's possible to use them to=
generate specially crafted tar archives that you can use to trick an unwa=
ry
admin into overwriting security sensitive files. As a rule of thumb, whe=
n
specifying directory trees to back-up, try and avoid having any path comp=
onents
being symbolic links.
> Why local, sub, mysite, virtwww are in ROOT or tar???
> 'local' must be under 'usr'
> 'virtwww' must be under 'local'
> 'mysite' must be under 'virtwww'
> but not in root
>=20
> Why I get that wrong result?
You'ld need to tell us a lot more detail about your system before anyone =
can
answer that. We can guess -- the sym-link problems I talk about above ar=
e my
attempt -- and I can tell you that the command as stated works for me, wh=
ere
everything is installed in a single UFS2 filesystem and it's all arranged=
in the
natural directory tree without trying to rearrange chunks of filesystems =
using
sym-links. If you're doing anything different to that, then please say s=
o.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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