From user.perl at gmail.com  Tue Jan 17 17:36:58 2006
From: user.perl at gmail.com (user perl)
Date: Tue, 17 Jan 2006 19:36:58 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
Message-ID: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>

Hi,

   I'm currently writing a CGI script which involves the execution of a tool
called "SVM Light" in Linux/Apache. The typical command for executing SVM
Light in Linux is svm_classify input-file model-file output-file. I'm using
the "system" option of executing commands in CGI but it isn't working
because SVM Light is not a system command (IMHO). Has anyone tried executing
third party tools within CGI scripts?

Thanks,
MP.
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From frank at wiles.org  Tue Jan 17 17:44:46 2006
From: frank at wiles.org (Frank Wiles)
Date: Tue, 17 Jan 2006 19:44:46 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
Message-ID: <20060117194446.33fdb452.frank@wiles.org>

On Tue, 17 Jan 2006 19:36:58 -0600
user perl <user.perl at gmail.com> wrote:

> Hi,
> 
>    I'm currently writing a CGI script which involves the execution of
> a tool called "SVM Light" in Linux/Apache. The typical command for
> executing SVM Light in Linux is svm_classify input-file model-file
> output-file. I'm using the "system" option of executing commands in
> CGI but it isn't working because SVM Light is not a system command
> (IMHO). Has anyone tried executing third party tools within CGI
> scripts?

  Yeah this shouldn't be a big deal.  Try using backticks instead of
  system like: 
 
  `/full/path/to/svn_classify $input $model $output`; 

 ---------------------------------
   Frank Wiles <frank at wiles.org>
   http://www.wiles.org
 ---------------------------------


From user.perl at gmail.com  Tue Jan 17 18:06:29 2006
From: user.perl at gmail.com (user perl)
Date: Tue, 17 Jan 2006 20:06:29 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <20060117194446.33fdb452.frank@wiles.org>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
	<20060117194446.33fdb452.frank@wiles.org>
Message-ID: <99553ea30601171806m3cf8eb12n97a16cf4e72f256d@mail.gmail.com>

Thanks for the reply. However I've installed the svm_classify in the same
'cgi-bin' directory. I'm enclosing my code snippet as below. I'd appreciate
if you could suggest me how to modify the line to execute svm_classify.

system "svm_classify input-file model-file output-file";

Thanks,
MP.

On 1/17/06, Frank Wiles <frank at wiles.org> wrote:
>
> On Tue, 17 Jan 2006 19:36:58 -0600
> user perl <user.perl at gmail.com> wrote:
>
> > Hi,
> >
> >    I'm currently writing a CGI script which involves the execution of
> > a tool called "SVM Light" in Linux/Apache. The typical command for
> > executing SVM Light in Linux is svm_classify input-file model-file
> > output-file. I'm using the "system" option of executing commands in
> > CGI but it isn't working because SVM Light is not a system command
> > (IMHO). Has anyone tried executing third party tools within CGI
> > scripts?
>
>   Yeah this shouldn't be a big deal.  Try using backticks instead of
>   system like:
>
>   `/full/path/to/svn_classify $input $model $output`;
>
> ---------------------------------
>    Frank Wiles <frank at wiles.org>
>    http://www.wiles.org
> ---------------------------------
>
>
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From frank at wiles.org  Tue Jan 17 18:10:22 2006
From: frank at wiles.org (Frank Wiles)
Date: Tue, 17 Jan 2006 20:10:22 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <99553ea30601171806m3cf8eb12n97a16cf4e72f256d@mail.gmail.com>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
	<20060117194446.33fdb452.frank@wiles.org>
	<99553ea30601171806m3cf8eb12n97a16cf4e72f256d@mail.gmail.com>
Message-ID: <20060117201022.7c127565.frank@wiles.org>

On Tue, 17 Jan 2006 20:06:29 -0600
user perl <user.perl at gmail.com> wrote:

> Thanks for the reply. However I've installed the svm_classify in the
> same 'cgi-bin' directory. I'm enclosing my code snippet as below. I'd
> appreciate if you could suggest me how to modify the line to execute
> svm_classify.
> 
> system "svm_classify input-file model-file output-file";

  Right, but you still need to give it the full path so instead of that
  use: 

  `/path/to/cgi-bin/svm_classify $input_file $model_file $output_file`
 
  As Im' assuming those were placeholders and not the real file names. 

 ---------------------------------
   Frank Wiles <frank at wiles.org>
   http://www.wiles.org
 ---------------------------------


From scratchcomputing at gmail.com  Tue Jan 17 18:10:29 2006
From: scratchcomputing at gmail.com (Eric Wilhelm)
Date: Tue, 17 Jan 2006 18:10:29 -0800
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <20060117194446.33fdb452.frank@wiles.org>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
	<20060117194446.33fdb452.frank@wiles.org>
Message-ID: <200601171810.29991.ewilhelm@cpan.org>

# from Frank Wiles
# on Tuesday 17 January 2006 05:44 pm:

> Yeah this shouldn't be a big deal. ?Try using backticks instead of
>? system like:
>?
>? `/full/path/to/svn_classify $input $model $output`;

Then cross your fingers and wish real hard that $output doesn't contain 
the string "; rm -rf /"  :-)

Try IPC::Run, which allows you to capture output, but also make sure 
that you exec the command in the less promiscuous list context.

  use IPC::Run qw(run);
  my ($in, $out, $err);
  run(['/full/path/to/svn_classify', $input, $model, $output], 
    \$in, \$out, \$err);

--Eric
-- 
Minus 1 million points for not setting your clock forward and trying the
code.
--Michael Schwern
---------------------------------------------------
    http://scratchcomputing.com
---------------------------------------------------

From frank at wiles.org  Tue Jan 17 18:16:58 2006
From: frank at wiles.org (Frank Wiles)
Date: Tue, 17 Jan 2006 20:16:58 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <200601171810.29991.ewilhelm@cpan.org>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
	<20060117194446.33fdb452.frank@wiles.org>
	<200601171810.29991.ewilhelm@cpan.org>
Message-ID: <20060117201658.7f09f052.frank@wiles.org>

On Tue, 17 Jan 2006 18:10:29 -0800
Eric Wilhelm <scratchcomputing at gmail.com> wrote:

> # from Frank Wiles
> # on Tuesday 17 January 2006 05:44 pm:
> 
> > Yeah this shouldn't be a big deal. ?Try using backticks instead of
> >? system like:
> >?
> >? `/full/path/to/svn_classify $input $model $output`;
> 
> Then cross your fingers and wish real hard that $output doesn't
> contain the string "; rm -rf /"  :-)

  Well yeah, I was assuming some error checking :) 
 ---------------------------------
   Frank Wiles <frank at wiles.org>
   http://www.wiles.org
 ---------------------------------


From user.perl at gmail.com  Tue Jan 17 18:25:59 2006
From: user.perl at gmail.com (user perl)
Date: Tue, 17 Jan 2006 20:25:59 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <20060117201022.7c127565.frank@wiles.org>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
	<20060117194446.33fdb452.frank@wiles.org>
	<99553ea30601171806m3cf8eb12n97a16cf4e72f256d@mail.gmail.com>
	<20060117201022.7c127565.frank@wiles.org>
Message-ID: <99553ea30601171825hf02e68fy54ab936979dadb63@mail.gmail.com>

No, they are real filenames. Let me explain what I'm writing this CGI script
for. I'm taking an input file and making it into a format that is suitable
for running svm_classify on it. So, I parse the given file and store the
formatted data in "input-file.dat". I already have a model file called "
model-file.dat". Now, "svm_classify" takes these two files as inputs and
generates the output file whose name I have to provide as the third
argument, (say) output-file.dat. How do I execute svm_classify now? By the
way, I'm writing this script on a file server, so do I have to give the
actual path which is something like "/.automount/..." instead of "/home/..."
?

Thanks,
MP.

On 1/17/06, Frank Wiles <frank at wiles.org> wrote:
>
> On Tue, 17 Jan 2006 20:06:29 -0600
> user perl <user.perl at gmail.com> wrote:
>
> > Thanks for the reply. However I've installed the svm_classify in the
> > same 'cgi-bin' directory. I'm enclosing my code snippet as below. I'd
> > appreciate if you could suggest me how to modify the line to execute
> > svm_classify.
> >
> > system "svm_classify input-file model-file output-file";
>
>   Right, but you still need to give it the full path so instead of that
>   use:
>
>   `/path/to/cgi-bin/svm_classify $input_file $model_file $output_file`
>
>   As Im' assuming those were placeholders and not the real file names.
>
> ---------------------------------
>    Frank Wiles < frank at wiles.org>
>    http://www.wiles.org
> ---------------------------------
>
>
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From amoore at mooresystems.com  Tue Jan 17 18:42:28 2006
From: amoore at mooresystems.com (Andrew Moore)
Date: Tue, 17 Jan 2006 20:42:28 -0600
Subject: [Kc] Executing third party tools using CGI/Perl
In-Reply-To: <99553ea30601171825hf02e68fy54ab936979dadb63@mail.gmail.com>
References: <99553ea30601171736j170fca1fy95b45898585c4be5@mail.gmail.com>
	<20060117194446.33fdb452.frank@wiles.org>
	<99553ea30601171806m3cf8eb12n97a16cf4e72f256d@mail.gmail.com>
	<20060117201022.7c127565.frank@wiles.org>
	<99553ea30601171825hf02e68fy54ab936979dadb63@mail.gmail.com>
Message-ID: <20060118024224.GC5449@mooresystems.com>


On Tue, Jan 17, 2006 at 08:25:59PM -0600, user perl wrote:
> How do I execute svm_classify now? By the
> way, I'm writing this script on a file server, so do I have to give the
> actual path which is something like "/.automount/..." instead of "/home/..."
> ?

Your approach seems right. You should be able to execute other things
with "system" or qx() or backticks. You may find some benefit from
testing for the existance of the files (both executables and data
files) before you try to use them. Be verbose in your script, and
don't forget to check the apache error logs.

Finally, I bet that if you post a code example that you'll get some
help on it. I'll hop on IRC with you if it would help.

-Andy


From davidnicol at gmail.com  Mon Jan 30 12:52:53 2006
From: davidnicol at gmail.com (David Nicol)
Date: Mon, 30 Jan 2006 14:52:53 -0600
Subject: [Kc] more hot gossip to distract you from your real work
Message-ID: <934f64a20601301252r2669b00bgd749ac29fd05724a@mail.gmail.com>

---------- Forwarded message ----------
From: Marsee Henon <marsee at oreilly.com>
Date: Jan 30, 2006 10:11 AM
Subject: O'Reilly Podcast Includes NSA Wiretapping News Scoop
To: kcpm-moderate at davidnicol.com


Hello--

"Distributing the Future" this week features a scoop we
thought was worth sharing:

Wiretapping doesn't require someone lurking in the bushes with a
directional antenna and headphones, or a pair of aligator clips and a
tape recorder, or someone sneaking into your room while you're out to
place a transmitter on your phone. In the U.S., if it's the government
doing the wiretapping, it's technically simple. At the O'Reilly Emerging
Telephony Conference Jack Herrington, author of "Podcasting Hacks"
interviewed Electronic Frontier Foundation Chairman of the Board Brad
Templeton about the technical, social, and political aspects of
wiretapping. At the end there's a nice juicy hint about upcoming action
from the EFF with regards to the recent NSA wiretapping case.
http://www.oreillynet.com/future

--Marsee


================================================================
O'Reilly
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Sebastopol, CA   95472
http://ug.oreilly.com/  http://www.oreilly.com
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--
David L Nicol
"It is pointless to give advice and sometimes
dangerous to take it." -- Gore Vidal