From fulko.hew at gmail.com  Thu May 20 09:05:38 2010
From: fulko.hew at gmail.com (Fulko Hew)
Date: Thu, 20 May 2010 12:05:38 -0400
Subject: [kw-pm] Fwd: Perl Survey 2010
In-Reply-To: <117165.50519.qm@web33304.mail.mud.yahoo.com>
References: <117165.50519.qm@web33304.mail.mud.yahoo.com>
Message-ID: <AANLkTikyQ2TQeAuQYl2k981lZeKDNAwsHOno7hTZPWGH@mail.gmail.com>

Take some time to complete the Perl survey:

http://blogs.perl.org/users/holy_zarquons_singing_fish/2010/05/the-perl-survey-2010-is-ready-for-you-to-complete.html
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From daniel at coder.com  Fri May 21 10:20:21 2010
From: daniel at coder.com (Daniel R. Allen)
Date: Fri, 21 May 2010 13:20:21 -0400 (EDT)
Subject: [kw-pm] UG News: Any O'Reilly ebook $9.99. (Friday 21 May only)
Message-ID: <Pine.LNX.4.44.1005211317540.30276-100000@matrix2.coder.com>


---------- Forwarded message ----------
Date: Fri, 21 May 2010 10:12:24 -0700
From: Marsee Henon <marsee at oreilly.com>
To: daniel at coder.com
Subject: UG News: *Free to Choose* Ebook Deal of the Day. Any O'Reilly
    ebook. Only $9.99.

View this information as HTML in your browser, click here:
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From daniel at coder.com  Fri May 21 11:26:56 2010
From: daniel at coder.com (Daniel R. Allen)
Date: Fri, 21 May 2010 14:26:56 -0400 (EDT)
Subject: [kw-pm] kw-pm May meeting the 27th *ALSO* Sussman talk at U of W on
	the 25th
Message-ID: <Pine.LNX.4.44.1005171119080.30276-100000@matrix2.coder.com>

We're meeting next Thursday, the 27th, to hear from one of Shuchit's
colleages at Sybase.

Guest presenter David Loop at Sybase will present on "Effective
Presentation Styles" with lots of examples of effective and non-effective
presentations.

I'll send the usual Tuesday email reminding people to sign up on the pizza
list.

---
Also this upcoming week: UW CS Club is hosting Gerald Sussman on Tuesday
and Wednesday:

"Why Programming is a Good Medium for Expressing Poorly Understood and
Sloppily Formulated Ideas"
Gerald Jay Sussman, Panasonic Professor of Electrical
Engineering, Massachusetts Institute of Technology
5:00 p.m.;  MC 2066

"The Art of the Propagator"
Location: MC 5158
Time: May 26, 5:00 PM

http://en.wikipedia.org/wiki/Gerald_Jay_Sussman

details here including abstracts of both talks:
http://csclub.uwaterloo.ca/misc/sussman/


From daniel at coder.com  Tue May 25 17:07:38 2010
From: daniel at coder.com (Daniel R. Allen)
Date: Tue, 25 May 2010 20:07:38 -0400 (EDT)
Subject: [kw-pm] kw-pm May meeting the 27th *ALSO* Sussman talk at U of
 W on the 25th and 26th
In-Reply-To: <Pine.LNX.4.44.1005171119080.30276-100000@matrix2.coder.com>
Message-ID: <Pine.LNX.4.44.1005252006070.30276-100000@matrix2.coder.com>

Pizza reminder!
http://kw.pm.org/wiki/index.cgi?PizzaList

Sign up by Thursday 4pm, please.

Hope to see you Thursday,
-D

On Fri, 21 May 2010, Daniel R. Allen wrote:

> We're meeting next Thursday, the 27th, to hear from one of Shuchit's
> colleages at Sybase.
>
> Guest presenter David Loop at Sybase will present on "Effective
> Presentation Styles" with lots of examples of effective and non-effective
> presentations.
>
> I'll send the usual Tuesday email reminding people to sign up on the pizza
> list.
>
> ---
> Also this upcoming week: UW CS Club is hosting Gerald Sussman on Tuesday
> and Wednesday:
>
> "Why Programming is a Good Medium for Expressing Poorly Understood and
> Sloppily Formulated Ideas"
> Gerald Jay Sussman, Panasonic Professor of Electrical
> Engineering, Massachusetts Institute of Technology
> 5:00 p.m.;  MC 2066
>
> "The Art of the Propagator"
> Location: MC 5158
> Time: May 26, 5:00 PM
>
> http://en.wikipedia.org/wiki/Gerald_Jay_Sussman
>
> details here including abstracts of both talks:
> http://csclub.uwaterloo.ca/misc/sussman/
>
> _______________________________________________
> kw-pm mailing list
> kw-pm at pm.org
> http://mail.pm.org/mailman/listinfo/kw-pm
>


From roberthpike at yahoo.com  Wed May 26 13:28:38 2010
From: roberthpike at yahoo.com (Robert Pike)
Date: Wed, 26 May 2010 13:28:38 -0700 (PDT)
Subject: [kw-pm] Child and Parent Windows
Message-ID: <711336.33991.qm@web120515.mail.ne1.yahoo.com>

Just wondering if anyone came across this same sort of issue and, if so, how did you resolve/ work around it? I have a html page open in my browser that (upon clicking a button) opens a new window with a different domain. Once I fill out a form and submit it in the child window I get redirected to another page with the same domain as the parent/main window. The problem is I keep getting an "Access is denied" error on the child window when I try to access the parent window of the (now) same domain. Has anyone come across this and what's the best resolution to the problem? Thanks in advance for any suggestions.



From rpjday at crashcourse.ca  Thu May 27 11:57:43 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Thu, 27 May 2010 14:57:43 -0400 (EDT)
Subject: [kw-pm] this list still active?
Message-ID: <alpine.DEB.2.00.1005271457350.5342@lynx>


rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From rpjday at crashcourse.ca  Thu May 27 13:10:19 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Thu, 27 May 2010 16:10:19 -0400 (EDT)
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
Message-ID: <alpine.DEB.2.00.1005271601580.5763@lynx>


  i asked about this to some extent on the kwlug-disc list as it was
part of a bigger problem but this is specifically a perl issue.  i
took an rpm package and mangled it (via "alien") into a .deb package
and installed it on my ubuntu 10.04 system.  wasn't too hard as it was
a noarch package consisting mostly of perl.

  however, the top-level program fails because of this in a
lower-level module file:

...
use Archive::Tar;
use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
...

  that second "use" statement fails since (and CMIIW as it's been a
while since i've worked with perl) the Zip.pm file on ubuntu is
actually here:

  /usr/lib/perl/5.10.1/IO/Compress/Zip.pm

in short, that hard coded "use" referring to Zip.pm is simply going to
fail on ubuntu since the perl packaging on ubuntu is not the same as
it is on fedora, where you *would* find the Zip.pm file in the "right"
place:

  /usr/lib/perl5/vendor_perl/5.10.0/Archive/Zip.pm

obviously(?), this could happen numerous times if someone's written a
mass of perl code for one distro -- there's no guarantee that any
other distro will have the same general module files in the same
place.

  is this normal?  what does one normally do with this, other than
just hacking the source until things match?

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From dada.da at gmail.com  Thu May 27 13:38:50 2010
From: dada.da at gmail.com (Daniel Allen)
Date: Thu, 27 May 2010 16:38:50 -0400
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
In-Reply-To: <alpine.DEB.2.00.1005271601580.5763@lynx>
References: <alpine.DEB.2.00.1005271601580.5763@lynx>
Message-ID: <AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>

Archive::Zip and IO::Compress::Zip are two different modules with different
authors.  Both have ubuntu packages. It is possible that by default Ubuntu
installs one and Fedora the other, but they install in different places in
the Perl namespace; you can apt-get install libarchive-zip-perl and your
code should find it in the perl path just fine.

-Daniel

On Thu, May 27, 2010 at 4:10 PM, Robert P. J. Day <rpjday at crashcourse.ca>wrote:

>
>  i asked about this to some extent on the kwlug-disc list as it was
> part of a bigger problem but this is specifically a perl issue.  i
> took an rpm package and mangled it (via "alien") into a .deb package
> and installed it on my ubuntu 10.04 system.  wasn't too hard as it was
> a noarch package consisting mostly of perl.
>
>  however, the top-level program fails because of this in a
> lower-level module file:
>
> ...
> use Archive::Tar;
> use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
> ...
>
>  that second "use" statement fails since (and CMIIW as it's been a
> while since i've worked with perl) the Zip.pm file on ubuntu is
> actually here:
>
>  /usr/lib/perl/5.10.1/IO/Compress/Zip.pm
>
> in short, that hard coded "use" referring to Zip.pm is simply going to
> fail on ubuntu since the perl packaging on ubuntu is not the same as
> it is on fedora, where you *would* find the Zip.pm file in the "right"
> place:
>
>  /usr/lib/perl5/vendor_perl/5.10.0/Archive/Zip.pm
>
> obviously(?), this could happen numerous times if someone's written a
> mass of perl code for one distro -- there's no guarantee that any
> other distro will have the same general module files in the same
> place.
>
>  is this normal?  what does one normally do with this, other than
> just hacking the source until things match?
>
> rday
>
> --
>
> ========================================================================
> Robert P. J. Day                               Waterloo, Ontario, CANADA
>
>            Linux Consulting, Training and Kernel Pedantry.
>
> Web page:                                          http://crashcourse.ca
> Twitter:                                       http://twitter.com/rpjday
> ========================================================================
> _______________________________________________
> kw-pm mailing list
> kw-pm at pm.org
> http://mail.pm.org/mailman/listinfo/kw-pm
>
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From rpjday at crashcourse.ca  Thu May 27 14:09:03 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Thu, 27 May 2010 17:09:03 -0400 (EDT)
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
In-Reply-To: <AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
References: <alpine.DEB.2.00.1005271601580.5763@lynx>
	<AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
Message-ID: <alpine.DEB.2.00.1005271708410.6050@lynx>

On Thu, 27 May 2010, Daniel Allen wrote:

> Archive::Zip and IO::Compress::Zip are two different modules with
> different authors.? Both have ubuntu packages. It is possible that
> by default Ubuntu installs one and Fedora the other, but they
> install in different places in the Perl namespace; you can apt-get
> install libarchive-zip-perl and your code should find it in the perl
> path just fine.

  ah, quite right, thanks very much.  i did admit my perl was rusty.

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From txwikinger at ubuntu.com  Thu May 27 14:25:18 2010
From: txwikinger at ubuntu.com (Ralph Janke)
Date: Thu, 27 May 2010 17:25:18 -0400
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
In-Reply-To: <AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
References: <alpine.DEB.2.00.1005271601580.5763@lynx>
	<AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
Message-ID: <201005271725.19442.txwikinger@ubuntu.com>

Are you sure that you have installed the necessary packages?

AFAIK, alien does not create automatically the right dependencies, and
dpkg does not load any dependencies when a package is installed. You would 
need to make sure that your .deb package has the correct dependencies 
included and use a package manager to install it, or you have to
manually make sure all the dependencies are met before you install
the packages.

On May 27, 2010 04:38:50 pm Daniel Allen wrote:
> Archive::Zip and IO::Compress::Zip are two different modules with different
> authors.  Both have ubuntu packages. It is possible that by default Ubuntu
> installs one and Fedora the other, but they install in different places in
> the Perl namespace; you can apt-get install libarchive-zip-perl and your
> code should find it in the perl path just fine.
> 
> -Daniel
> 
> On Thu, May 27, 2010 at 4:10 PM, Robert P. J. Day 
<rpjday at crashcourse.ca>wrote:
> >  i asked about this to some extent on the kwlug-disc list as it was
> > 
> > part of a bigger problem but this is specifically a perl issue.  i
> > took an rpm package and mangled it (via "alien") into a .deb package
> > and installed it on my ubuntu 10.04 system.  wasn't too hard as it was
> > a noarch package consisting mostly of perl.
> > 
> >  however, the top-level program fails because of this in a
> > 
> > lower-level module file:
> > 
> > ...
> > use Archive::Tar;
> > use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
> > ...
> > 
> >  that second "use" statement fails since (and CMIIW as it's been a
> > 
> > while since i've worked with perl) the Zip.pm file on ubuntu is
> > 
> > actually here:
> >  /usr/lib/perl/5.10.1/IO/Compress/Zip.pm
> > 
> > in short, that hard coded "use" referring to Zip.pm is simply going to
> > fail on ubuntu since the perl packaging on ubuntu is not the same as
> > it is on fedora, where you *would* find the Zip.pm file in the "right"
> > 
> > place:
> >  /usr/lib/perl5/vendor_perl/5.10.0/Archive/Zip.pm
> > 
> > obviously(?), this could happen numerous times if someone's written a
> > mass of perl code for one distro -- there's no guarantee that any
> > other distro will have the same general module files in the same
> > place.
> > 
> >  is this normal?  what does one normally do with this, other than
> > 
> > just hacking the source until things match?
> > 
> > rday
> > 
> > --
> > 
> > ========================================================================
> > Robert P. J. Day                               Waterloo, Ontario, CANADA
> > 
> >            Linux Consulting, Training and Kernel Pedantry.
> > 
> > Web page:                                          http://crashcourse.ca
> > Twitter:                                       http://twitter.com/rpjday
> > ========================================================================
> > _______________________________________________
> > kw-pm mailing list
> > kw-pm at pm.org
> > http://mail.pm.org/mailman/listinfo/kw-pm


From txwikinger at ubuntu.com  Thu May 27 14:25:18 2010
From: txwikinger at ubuntu.com (Ralph Janke)
Date: Thu, 27 May 2010 17:25:18 -0400
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
In-Reply-To: <AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
References: <alpine.DEB.2.00.1005271601580.5763@lynx>
	<AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
Message-ID: <201005271725.19442.txwikinger@ubuntu.com>

Are you sure that you have installed the necessary packages?

AFAIK, alien does not create automatically the right dependencies, and
dpkg does not load any dependencies when a package is installed. You would 
need to make sure that your .deb package has the correct dependencies 
included and use a package manager to install it, or you have to
manually make sure all the dependencies are met before you install
the packages.

On May 27, 2010 04:38:50 pm Daniel Allen wrote:
> Archive::Zip and IO::Compress::Zip are two different modules with different
> authors.  Both have ubuntu packages. It is possible that by default Ubuntu
> installs one and Fedora the other, but they install in different places in
> the Perl namespace; you can apt-get install libarchive-zip-perl and your
> code should find it in the perl path just fine.
> 
> -Daniel
> 
> On Thu, May 27, 2010 at 4:10 PM, Robert P. J. Day 
<rpjday at crashcourse.ca>wrote:
> >  i asked about this to some extent on the kwlug-disc list as it was
> > 
> > part of a bigger problem but this is specifically a perl issue.  i
> > took an rpm package and mangled it (via "alien") into a .deb package
> > and installed it on my ubuntu 10.04 system.  wasn't too hard as it was
> > a noarch package consisting mostly of perl.
> > 
> >  however, the top-level program fails because of this in a
> > 
> > lower-level module file:
> > 
> > ...
> > use Archive::Tar;
> > use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
> > ...
> > 
> >  that second "use" statement fails since (and CMIIW as it's been a
> > 
> > while since i've worked with perl) the Zip.pm file on ubuntu is
> > 
> > actually here:
> >  /usr/lib/perl/5.10.1/IO/Compress/Zip.pm
> > 
> > in short, that hard coded "use" referring to Zip.pm is simply going to
> > fail on ubuntu since the perl packaging on ubuntu is not the same as
> > it is on fedora, where you *would* find the Zip.pm file in the "right"
> > 
> > place:
> >  /usr/lib/perl5/vendor_perl/5.10.0/Archive/Zip.pm
> > 
> > obviously(?), this could happen numerous times if someone's written a
> > mass of perl code for one distro -- there's no guarantee that any
> > other distro will have the same general module files in the same
> > place.
> > 
> >  is this normal?  what does one normally do with this, other than
> > 
> > just hacking the source until things match?
> > 
> > rday
> > 
> > --
> > 
> > ========================================================================
> > Robert P. J. Day                               Waterloo, Ontario, CANADA
> > 
> >            Linux Consulting, Training and Kernel Pedantry.
> > 
> > Web page:                                          http://crashcourse.ca
> > Twitter:                                       http://twitter.com/rpjday
> > ========================================================================
> > _______________________________________________
> > kw-pm mailing list
> > kw-pm at pm.org
> > http://mail.pm.org/mailman/listinfo/kw-pm


From rpjday at crashcourse.ca  Thu May 27 14:41:27 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Thu, 27 May 2010 17:41:27 -0400 (EDT)
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
In-Reply-To: <201005271725.19442.txwikinger@ubuntu.com>
References: <alpine.DEB.2.00.1005271601580.5763@lynx>
	<AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
	<201005271725.19442.txwikinger@ubuntu.com>
Message-ID: <alpine.DEB.2.00.1005271740470.7197@lynx>

On Thu, 27 May 2010, Ralph Janke wrote:

> Are you sure that you have installed the necessary packages?
>
> AFAIK, alien does not create automatically the right dependencies,
> and dpkg does not load any dependencies when a package is installed.
> You would need to make sure that your .deb package has the correct
> dependencies included and use a package manager to install it, or
> you have to manually make sure all the dependencies are met before
> you install the packages.

  give me a bit, i'll summarize my thinking, then you can laugh
hysterically at it before correcting it.

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From rpjday at crashcourse.ca  Thu May 27 14:41:27 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Thu, 27 May 2010 17:41:27 -0400 (EDT)
Subject: [kw-pm] compatibility between fedora and ubuntu perl packages?
In-Reply-To: <201005271725.19442.txwikinger@ubuntu.com>
References: <alpine.DEB.2.00.1005271601580.5763@lynx>
	<AANLkTim4msg2SfMW-8BmBtxgIJOszsdMUrAAKuLXBd8z@mail.gmail.com>
	<201005271725.19442.txwikinger@ubuntu.com>
Message-ID: <alpine.DEB.2.00.1005271740470.7197@lynx>

On Thu, 27 May 2010, Ralph Janke wrote:

> Are you sure that you have installed the necessary packages?
>
> AFAIK, alien does not create automatically the right dependencies,
> and dpkg does not load any dependencies when a package is installed.
> You would need to make sure that your .deb package has the correct
> dependencies included and use a package manager to install it, or
> you have to manually make sure all the dependencies are met before
> you install the packages.

  give me a bit, i'll summarize my thinking, then you can laugh
hysterically at it before correcting it.

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From rpjday at crashcourse.ca  Thu May 27 14:55:33 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Thu, 27 May 2010 17:55:33 -0400 (EDT)
Subject: [kw-pm] mangling publican 1.99 to install on ubuntu
Message-ID: <alpine.DEB.2.00.1005271744580.7286@lynx>


  what the heck, i'll repost this here since it's turning out to be
primarily a perl issue and i'd be delighted if someone could verify
the right way to do this since i'm going to try to be using it
tomorrow.

  publican is a docbook/xml-based publishing program written by the
folks at red hat for their online docs, and they've recently added
another package, publican-website, for websites of course.

  the two "noarch" rpm files are here:

  http://rlandmann.fedorapeople.org/publican/

i took a chance, downloaded them, and used "alien" to convert them to
.deb files.  the saving grace here is that, since they're noarch,
they're less likely to have incompatibilities.  and as for rpm
scriptlets incorporated into those packages, the website package had
only:

postinstall scriptlet (using /bin/sh):
/usr/bin/perl -e 'use Publican::WebSite; my $ws = Publican::WebSite->new(); $ws->regen_all_toc();'

  so, really, given the structure of those rpm packages, my only
concerns were dependencies and making sure the perl INC path was set
correctly.

  after installing both .deb files with dpkg, i ran "publican --help"
and learned quickly that i needed to:

  $ export PERL5LIB=/usr/lib/perl5/vendor_perl/5.10.0

ok, try again and, based on daniel's advice, i iteratively learned
that i needed to install the ubuntu packages:

  libarchive-zip-perl
  libdbi-perl
  libtemplate-perl

based on fairly obvious error messages, of course.  and at that point,
publican will at least execute.  sadly, the packages didn't come
bundled with the docs so i'll have to wing it.

  but if anyone's bored to tears and wants to verify what i did and
suggest a better way, feel free.  i haven't run that last website
scriptlet yet since i have no clue what it does.  but i don't need the
website functionality anyway.

  thoughts?

rday




-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From rpjday at crashcourse.ca  Mon May 31 06:02:03 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Mon, 31 May 2010 09:02:03 -0400 (EDT)
Subject: [kw-pm] why is my $PWD uninitialized?
Message-ID: <alpine.DEB.2.00.1005310855300.20758@lynx>


  (aside:  i'm suddenly immersed in a bunch of perl code so while my
perl is very rusty, i'm going to be asking some admittedly dumb
questions over the next little while as i get back to speed.)

  i'm rewriting a tutorial on the "udev" facility in linux, and it
turns out that the source tarball has a "test" component that
simulates plugging and unplugging various devices and checking the
messages generated against what's expected.  very cool.

  however, when i try to run the script on my ubuntu system:

$ sudo test/udev-test.pl
Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1735.

udev-test will run 142 tests:

TEST 1: no rules
device '/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda' expecting node/link 'sda'
Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1663.
Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1663.
add:         error
Can't exec "tree": No such file or directory at test/udev-test.pl line
1685.

Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1698.
Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1698.
remove:      ok
... etc etc ...

  the script udev-test.pl opens with:

...
use warnings;
use strict;

my $PWD                 = $ENV{PWD};
my $sysfs               = "test/sys/";
...

  down at line 1735, there is:

print CONF "udev_rules=\"$PWD\"\n";

  while at line 1663:

        if ((-e "$PWD/$udev_root$rules->{exp_name}") ||
            (-l "$PWD/$udev_root$rules->{exp_name}")) {

i'm baffled -- shouldn't that variable be initialized?  or am i just
forgetting something hideously basic about my perl?

rday


-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From foxryan at gmail.com  Mon May 31 06:06:28 2010
From: foxryan at gmail.com (Ryan Fox)
Date: Mon, 31 May 2010 09:06:28 -0400
Subject: [kw-pm] why is my $PWD uninitialized?
In-Reply-To: <alpine.DEB.2.00.1005310855300.20758@lynx>
References: <alpine.DEB.2.00.1005310855300.20758@lynx>
Message-ID: <AANLkTin234BnukXRvfjYgr0mqLSICLrfizYU9_kgAB_M@mail.gmail.com>

Have a look at Cwd. http://perldoc.perl.org/Cwd.html

On Mon, May 31, 2010 at 9:02 AM, Robert P. J. Day <rpjday at crashcourse.ca>wrote:

>
>  (aside:  i'm suddenly immersed in a bunch of perl code so while my
> perl is very rusty, i'm going to be asking some admittedly dumb
> questions over the next little while as i get back to speed.)
>
>  i'm rewriting a tutorial on the "udev" facility in linux, and it
> turns out that the source tarball has a "test" component that
> simulates plugging and unplugging various devices and checking the
> messages generated against what's expected.  very cool.
>
>  however, when i try to run the script on my ubuntu system:
>
> $ sudo test/udev-test.pl
> Use of uninitialized value $PWD in concatenation (.) or string at test/
> udev-test.pl line 1735.
>
> udev-test will run 142 tests:
>
> TEST 1: no rules
> device
> '/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda'
> expecting node/link 'sda'
> Use of uninitialized value $PWD in concatenation (.) or string at test/
> udev-test.pl line 1663.
> Use of uninitialized value $PWD in concatenation (.) or string at test/
> udev-test.pl line 1663.
> add:         error
> Can't exec "tree": No such file or directory at test/udev-test.pl line
> 1685.
>
> Use of uninitialized value $PWD in concatenation (.) or string at test/
> udev-test.pl line 1698.
> Use of uninitialized value $PWD in concatenation (.) or string at test/
> udev-test.pl line 1698.
> remove:      ok
> ... etc etc ...
>
>  the script udev-test.pl opens with:
>
> ...
> use warnings;
> use strict;
>
> my $PWD                 = $ENV{PWD};
> my $sysfs               = "test/sys/";
> ...
>
>  down at line 1735, there is:
>
> print CONF "udev_rules=\"$PWD\"\n";
>
>  while at line 1663:
>
>        if ((-e "$PWD/$udev_root$rules->{exp_name}") ||
>            (-l "$PWD/$udev_root$rules->{exp_name}")) {
>
> i'm baffled -- shouldn't that variable be initialized?  or am i just
> forgetting something hideously basic about my perl?
>
> rday
>
>
> --
>
> ========================================================================
> Robert P. J. Day                               Waterloo, Ontario, CANADA
>
>            Linux Consulting, Training and Kernel Pedantry.
>
> Web page:                                          http://crashcourse.ca
> Twitter:                                       http://twitter.com/rpjday
> ========================================================================
> _______________________________________________
> kw-pm mailing list
> kw-pm at pm.org
> http://mail.pm.org/mailman/listinfo/kw-pm
>
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From elbie at trig.net  Mon May 31 06:14:10 2010
From: elbie at trig.net (Christopher Calzonetti)
Date: Mon, 31 May 2010 09:14:10 -0400
Subject: [kw-pm] why is my $PWD uninitialized?
In-Reply-To: <alpine.DEB.2.00.1005310855300.20758@lynx>
References: <alpine.DEB.2.00.1005310855300.20758@lynx>
Message-ID: <20100531131410.GA54680@trig.net>

On Mon, May 31, 2010 at 09:02:03AM -0400, Robert P. J. Day wrote:
> 
> $ sudo test/udev-test.pl
> Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1735.

shikamaru:~ elbie$ perl -e 'print "\"$ENV{PWD}\"", "\n";'
"/Users/elbie"
shikamaru:~ elbie$ sudo perl -e 'print "\"$ENV{PWD}\"", "\n";'
""

Sudo by default calls a reset of the environment.  See the man page for
more information.
-- 
Christopher Calzonetti, Technical Lead, Trig.Net
   Web:  http://www.trig.net/     Mail:  mailto:chris at trig.net

From rpjday at crashcourse.ca  Mon May 31 06:37:21 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Mon, 31 May 2010 09:37:21 -0400 (EDT)
Subject: [kw-pm] why is my $PWD uninitialized?
In-Reply-To: <20100531131410.GA54680@trig.net>
References: <alpine.DEB.2.00.1005310855300.20758@lynx>
	<20100531131410.GA54680@trig.net>
Message-ID: <alpine.DEB.2.00.1005310937150.21264@lynx>

On Mon, 31 May 2010, Christopher Calzonetti wrote:

> On Mon, May 31, 2010 at 09:02:03AM -0400, Robert P. J. Day wrote:
> >
> > $ sudo test/udev-test.pl
> > Use of uninitialized value $PWD in concatenation (.) or string at test/udev-test.pl line 1735.
>
> shikamaru:~ elbie$ perl -e 'print "\"$ENV{PWD}\"", "\n";'
> "/Users/elbie"
> shikamaru:~ elbie$ sudo perl -e 'print "\"$ENV{PWD}\"", "\n";'
> ""
>
> Sudo by default calls a reset of the environment.  See the man page for
> more information.

  yes, that will explain it.  i'm embarrassed -- i really should have
known that, shouldn't i?

  i might write a short wiki page on this and let you folks play with
it if it interests you.  i think the source needs to be tweaked to get
around some obvious glitches.

  more later...

rday



-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From rpjday at crashcourse.ca  Mon May 31 09:37:19 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Mon, 31 May 2010 12:37:19 -0400 (EDT)
Subject: [kw-pm] playing with udev:  the followup
Message-ID: <alpine.DEB.2.00.1005311232320.11514@lynx>


  since folks here were nice enough to help me out, here's the end
result of my writeup which i might use as the basis of another column
at linux.com:

http://www.crashcourse.ca/wiki/index.php/Building_and_testing_udev

  my only issue that i'm tempted to submit a patch for involves this
code in the test/udev-test.pl script:

                if ($rules->{exp_add_error}) {
                        print " as expected\n";
                } else {
                        print "\n";
                        system("tree $udev_root");
                        print "\n";
                        $error++;
                        sleep(1);
                }

  all well and good, except if the user doesn't have the "tree"
package installed and something goes wrong, there's no system "tree"
command and that invocation of system() fails rather inelegantly.

  what would be the un-perl-like one correct way to handle cases like
that?  as in, don't run a command unless you know it's there, perhaps
replace it with an invocation of "ls -lR" or something.  is there a
canonical perl way to do checks like that?  thanks.

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================

From rpjday at crashcourse.ca  Mon May 31 23:52:47 2010
From: rpjday at crashcourse.ca (Robert P. J. Day)
Date: Tue, 1 Jun 2010 02:52:47 -0400 (EDT)
Subject: [kw-pm] how to quickly list package dependencies based on needed
	modules?
Message-ID: <alpine.DEB.2.00.1006010248200.4997@lynx>


  moving on to the next question -- i've downloaded and am building a
package whose Build.PL script clearly spells out its build and run
requirements:

my $builder = $class->new(
    module_name       => 'Publican',
    dist_name         => 'Publican',
    license           => 'perl',
    dist_author       => 'Jeff Fearn <jfearn at redhat.com>',
    dist_version_from => 'bin/publican',
    build_requires    => {
        'Devel::Cover'                    => 0,
        'Module::Build'                   => 0,
        'Test::Exception'                 => 0,
        'Test::More'                      => 0,
        ... snip ...
    },
    requires => {
        'Archive::Tar'                    => 0,
        'Archive::Zip'                    => 0,
        'Carp'                            => 0,
        ... snip ...
   }

  as it stands, when i first went to build this on my ubuntu 10.04
system, i tediously went through the cycle of trying to build, being
told what module was missing, identifying the corresponding package,
installing, rinse and repeat.

  is there an automated way to mapping perl modules to their
debian/ubuntu packages so that one could just, on the very first
build, have the build script say, "hey, you're missing all of these
modules, i know what packages they come from, would you like me to
install them?"

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================