[ESS] ess-17.11-tgz is not compressed

Neil Shephard n@heph@rd @end|ng |rom gm@||@com
Thu Dec 7 17:55:14 CET 2017


Ahha, thank you for your detailed sleuthing Martin, using the
--compression=none does indeed solve the issue here too.

$ wget --compression=none
http://ess.r-project.org/downloads/ess/ess-17.11.tgz
--2017-12-07 16:53:58--
http://ess.r-project.org/downloads/ess/ess-17.11.tgz
Resolving ess.r-project.org... 129.132.119.195
Connecting to ess.r-project.org|129.132.119.195|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3275703 (3.1M) [application/x-tar]
Saving to: ‘ess-17.11.tgz’

ess-17.11.tgz
100%[===========================================================================================>]
 3.12M  7.12MB/s    in 0.4s

2017-12-07 16:53:58 (7.12 MB/s) - ‘ess-17.11.tgz’ saved [3275703/3275703]

 ~/tmp/ess $ ls -l
total 3200
-rw-r--r-- 1 neil neil 3275703 Nov 13 14:13 ess-17.11.tgz
 ~/tmp/ess $ tar xzvf ess-17.11.tgz
ess-17.11/
ess-17.11/.dir-locals.el
ess-17.11/.gitignore
ess-17.11/COPYING
ess-17.11/ChangeLog
ess-17.11/LDA/
ess-17.11/LDA/README
ess-17.11/LDA/ex1.nw
ess-17.11/Makeconf
ess-17.11/Makefile
ess-17.11/OONEWS
ess-17.11/README.md
ess-17.11/RPM.spec.in
...

Thanks,

Neil

--
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On 7 December 2017 at 16:42, Martin Maechler <maechler using stat.math.ethz.ch>
wrote:

> >>>>> Martin Maechler <maechler using stat.math.ethz.ch>
> >>>>>     on Thu, 7 Dec 2017 17:37:23 +0100 writes:
>
> >>>>> Neil Shephard <nshephard using gmail.com>
> >>>>>     on Tue, 5 Dec 2017 08:18:08 +0000 writes:
>
>     >> Hi, I've only just caught up on the update to ess-17.11
>     >> and went to install it using the Gentoo Linux package
>     >> management system portage.
>
>     >> It complained that the ess-17.11.tgz was not a compressed
>     >> archive and this appears to be true, its just a plain
>     >> tar-ball.
>
>     > well, I'm managing the ess.r-project.org server and I have
>     > actually mounted the file system where ess-17.11.tgz lives
>     > and 'ls -l' and 'file' say
>
>     > ls -l ess-17.11.tgz -rw-r--r--. 1 maechler sfsstaff
>     > 3275703 Nov 13 15:13 ess-17.11.tgz
>
>     > file ess-17.11.tgz ess-17.11.tgz: gzip compressed data,
>     > last modified: Mon Nov 13 14:13:29 2017, from Unix
>
>     > (and read on)
>
>     >> This means that when portage trys to unpack it based on
>     >> the file extension '.tgz' it tries to uncompress it,
>     >> which fails.
>
>     >> For now I've change the ebuild (the scripts which install
>     >> programmes under Gentoo/Linux) to use the ess-17.11.zip
>     >> but thought this worth reporting.  I include below
>     >> downloading the ess-17.11.tgz and attempting to
>     >> unzip/uncompress manually, what finally worked was
>     >> renaming to ess-17.11.tar and untar the archive.
>
>     >> Details of this are also on Gentoo Buzilla at
>     >> https://bugs.gentoo.org/639752
>
>     >> Regards,
>
>     >> Neil
>
>     > Now look closely at the output of wget -- which I can
>     > reproduce in my (Fedora 26) Linux :
>
>     >> ~/tmp/ess $ wget
>     >> http://ess.r-project.org/downloads/ess/ess-17.11.tgz
>     >> --2017-12-05 08:12:09--
>     >> http://ess.r-project.org/downloads/ess/ess-17.11.tgz
>     >> Resolving ess.r-project.org... 129.132.119.195 Connecting
>     >> to ess.r-project.org|129.132.119.195|:80... connected.
>     >> HTTP request sent, awaiting response... 200 OK Length:
>     >> 3275703 (3.1M) [application/x-tar]
>     >           ^^^^^^^^^^^^^^
>     >> Saving to: ‘ess-17.11.tgz’
>     >>
>     >> ess-17.11.tgz
>     >> 100%[=======================================================
> ====================================>]
>     >> 3.12M 6.30MB/s in 0.5s
>     >>
>     >> 2017-12-05 08:12:09 (6.30 MB/s) - ‘ess-17.11.tgz’ saved
>     >> [8898560]
>     >                                                            ^^^^^^^^
>
>     > so indeed wget seems to do __silly!__ behave a bit
>     > magically nowadays ... -- at least being honest about it:
>
>     > It gets a *.tgz of size 3275703 bytes (~ 3.1 M) and
>     > internally uses gunzip absolutely with*OUT* saying so, but
>     > then honestly reports that the result is of size 8898560
>     > bytes
>
>     > I'm appalled.
>
>     > Note one thing though: For 2 year or so, 'tar' has become
>     > smart enough to "see" if it needs to uncompress or not; so
>     > for practical purposes, you nowadays can use
>
>     >   tar xf <file>
>
>     > and it will do the right thing if the file is compressed
>     > or not.
>
> Well, not quite:  If the file ends in  *.tgz  it tries
> automatically to use gunzip on it and fails...
> so it seems the manual 'mv ...tgz ...tar'  seems needed.
>
> Ok, now having skimmed the result of  'wget --help', I see
> (among HTTP options) :
>
>      --compression=TYPE          choose compression, one of auto, gzip and
> none
>
> and indeed some silly people made 'auto' the default *and*
> forgot to implement a renaming of *.tgz --> *.tar in the case of
> auto compression.
>
> The solution for (tested):  Use   wget --compression=none  :
>
> $ wget --compression=none http://ess.r-project.org/
> downloads/ess/ess-17.11.tgz
> --2017-12-07 17:40:02--  http://ess.r-project.org/
> downloads/ess/ess-17.11.tgz
> Resolving ess.r-project.org (ess.r-project.org)... 129.132.119.195
> Connecting to ess.r-project.org (ess.r-project.org)|129.132.119.195|:80...
> connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 3275703 (3.1M) [application/x-tar]
> Saving to: 'ess-17.11.tgz.1'
>
> ess-17.11.tgz.1        100%[==========================>]   3.12M
> --.-KB/s    in 0.04s
>
> 2017-12-07 17:40:02 (81.1 MB/s) - 'ess-17.11.tgz.1' saved [3275703/3275703]
>
> --
> Martin Maechler ETH Zurich
>

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