[11876] in Perl-Users-Digest
Perl-Users Digest, Issue: 5476 Volume: 8
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Sat Apr 24 23:07:23 1999
Date: Sat, 24 Apr 99 20:00:19 -0700
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Sat, 24 Apr 1999 Volume: 8 Number: 5476
Today's topics:
Re: A slight teaser....? (David Combs)
Accepting Uploads via the web <glrichards@email.msn.com>
Re: Accepting Uploads via the web (Bob Trieger)
Re: chomp-ing from the FRONT end (Matthew Bafford)
Re: Different between recurrence and looping <Klaus.Schilling@home.ivm.de>
Re: Different between recurrence and looping <grepwop@hotbot.mail.com>
Extracting emails from array <raufeisen@home.com>
Re: Extracting emails from array <tripix@tdi-net.freeserve.co.uk>
Re: Extracting emails from array <jglascoe@giss.nasa.gov>
iPerl V0.3 is better than cpp & m4 (de, en & eo) <occitan@esperanto.org>
Net::FTP creates empty file <tripix@tdi-net.freeserve.co.uk>
Re: Newbie regex query (Larry Rosler)
Re: Numeric String (David Combs)
Re: Numeric String <tchrist@mox.perl.com>
Re: Perl 'split' function in C?? (M.J.T. Guy)
Re: PERL Books <zzekka@intrex.net>
Remote access in CGI multilinks@my-dejanews.com
Re: Remote access in CGI <gellyfish@gellyfish.com>
Re: Top 10 newbie errors? (David Combs)
Re: Top 10 newbie errors? <jglascoe@giss.nasa.gov>
Re: Top 10 newbie errors? (Matthew Bafford)
Re: Weird problem with perl 5.003, Solaris 2.6 and VXFS (David Combs)
Special: Digest Administrivia (Last modified: 12 Dec 98 (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Sat, 24 Apr 1999 23:57:14 GMT
From: dkcombs@netcom.com (David Combs)
Subject: Re: A slight teaser....?
Message-Id: <dkcombsFApx7F.Exx@netcom.com>
Do "man comm".
------------------------------
Date: Sat, 24 Apr 1999 16:15:45 -0700
From: "Gabriel Richards" <glrichards@email.msn.com>
Subject: Accepting Uploads via the web
Message-Id: <O4bHfhqj#GA.239@cpmsnbbsa05>
Is there a module or something that I can use to help me create a script to
allow users to upload images and text files via the web?
Thanks,
Gabe
------------------------------
Date: Sun, 25 Apr 1999 02:30:00 GMT
From: sowmaster@juicepigs.com (Bob Trieger)
Subject: Re: Accepting Uploads via the web
Message-Id: <7ftu9f$mab$1@fir.prod.itd.earthlink.net>
[ courtesy cc sent by mail if address not munged ]
"Gabriel Richards" <glrichards@email.msn.com> wrote:
>Is there a module or something that I can use to help me create a script to
>allow users to upload images and text files via the web?
The module you are looking for is CGI.pm.
This is not the newsgroup for dealing with "most" cgi questions. I'd
suggest reading the docs for CGI.pm and if you still have questions,
direct them to news:comp.infosystems.www.authoring.cgi unless they are
specific perl questions.
Good luck,
------------------------------
Date: Sun, 25 Apr 1999 00:36:47 GMT
From: dragons@dragons.duesouth.net (Matthew Bafford)
Subject: Re: chomp-ing from the FRONT end
Message-Id: <slrn7i4n95.vc.dragons@dragons.duesouth.net>
On 24 Apr 1999 20:15:16 GMT, Abigail <abigail@fnx.com>
lucked upon a computer, and thus typed in the following:
: Abigail (abigail@fnx.com) wrote on MMLXII September MCMXCIII in
: <URL:news:7ft6on$jbl$4@client2.news.psi.net>:
: @@ substr $str => 1, 0 = '';
:
: That should of course be:
:
: substr $str => 0, 1 = '';
Or, if you're interested in it compiling, you'd use:
substr($str => 0, 1) = '';
: Abigail
--Matthew
------------------------------
Date: 24 Apr 1999 21:49:23 +0200
From: Klaus Schilling <Klaus.Schilling@home.ivm.de>
Subject: Re: Different between recurrence and looping
Message-Id: <87k8v1yf24.fsf@home.ivm.de>
Erez Zuler <zerez@netvision.net.il> writes:
> Basically, everything that can be done with recursive calls can be done also
> without recursive call. Recursive calls uses less 'programmer' recourses in
> favor of system recourses.
That's not always true.
Klaus Schilling
------------------------------
Date: Sat, 24 Apr 1999 19:54:40 -0700
From: "Miragent" <grepwop@hotbot.mail.com>
Subject: Re: Different between recurrence and looping
Message-Id: <ucK4sbsj#GA.249@cpmsnbbsa02>
Hi
I just changed a recursive function to that which would only execute one
loop of the iteration per call - the calling procedure now does the
iteration.
When I tried to run and debug the former with instruction tracing, the
debugger balked and complained in the message "Function is too complex".
Erez Zuler wrote in message <3721FDFA.75C1E0A2@netvision.net.il>...
>Basically, everything that can be done with recursive calls can be done
also
>without recursive call. Recursive calls uses less 'programmer' recourses
in
>favor of system recourses.
>
------------------------------
Date: Sun, 25 Apr 1999 00:17:49 GMT
From: David Raufeisen <raufeisen@home.com>
Subject: Extracting emails from array
Message-Id: <372307F0.AABC51AC@home.com>
I have an array @message in which i read in an email message from a
file.. how can i extract all email address's ( *@*.* ) from @message
into another array @emails?
Thanks!
------------------------------
Date: Sun, 25 Apr 1999 01:21:21 +0100
From: "Wayne Keenan" <tripix@tdi-net.freeserve.co.uk>
Subject: Re: Extracting emails from array
Message-Id: <7ftnj0$hj7$1@news8.svr.pol.co.uk>
David Raufeisen wrote in message <372307F0.AABC51AC@home.com>...
>I have an array @message in which i read in an email message from a
>file.. how can i extract all email address's ( *@*.* ) from @message
>into another array @emails?
shoot@myfoot.spam?
------------------------------
Date: Sat, 24 Apr 1999 21:55:17 -0400
From: Jay Glascoe <jglascoe@giss.nasa.gov>
Subject: Re: Extracting emails from array
Message-Id: <37227605.84FF9A7D@giss.nasa.gov>
David Raufeisen wrote:
>
> I have an array @message in which i read in an email message from a
> file.. how can i extract all email address's ( *@*.* ) from @message
> into another array @emails?
I probably shouldn't answer this, but I'm bored.
@emails = map /\b([\w.-]+@(?:[\w.-]+\.)+[\w.-]+?\w)\b/g, @message;
the regex isn't foolproof.
------------------------------
Date: Sat, 24 Apr 1999 23:47:22 GMT
From: Daniel Pfeiffer <occitan@esperanto.org>
Subject: iPerl V0.3 is better than cpp & m4 (de, en & eo)
Message-Id: <7ftl69$ur0$1@nnrp1.dejanews.com>
Deutsch:
Der iPerl Interpreter ist ein transformierender Filter, der wie der C
Prdprozessor oder der m4 Makroprozessor funktioniert, nur, da_ die
eingebettete Sprache Perl in seiner ganzen Macht ist. Per SGML/HTML/XML ist
dies auch im Internet sehr interessant, wie mitgelieferte Beispiele zeigen.
Mir sind keine Fehler mehr bekannt, auch der m4 Stil funktioniert jetzt.
English:
The iPerl interpreter is a transforming filter, that works much like the C
preprocessor or the m4 macro processor, only that the language embedded
into a document is full powered Perl. With SGML/HTML/XML this is also very
interesting in web-pages, as included examples show. I know of no more errors
and m4 style also works.
Esperanto:
La iPerl interpretilo estas aliformiga filtrilo kiu funkcias kiel la C
anta^uprocezilo a^u la m4 makroprocezilo, nur ke ^gi enmetebligas plenpovan
Perl en viajn dokumentojn. Kun SGML/HTML/XML tio estas interesega por
TTT-pa^goj, kiel kunliveritaj ekzemploj montras. Mi ne plu konas erarojn, kaj
la m4 stilo funkcias.
http://beam.to/iPerl (de, en & eo)
-- Daniel Pfeiffer
-----------== Posted via Deja News, The Discussion Network ==----------
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own
------------------------------
Date: Sun, 25 Apr 1999 01:47:30 +0100
From: "Wayne Keenan" <tripix@tdi-net.freeserve.co.uk>
Subject: Net::FTP creates empty file
Message-Id: <7ftp7o$8bv$1@news4.svr.pol.co.uk>
The problem:
This script uploads a empty file to a FTP server (odd), but can download one
from the same server
tickedy boo (unodd).
I am at my wits end, I do apologose in advance because this should not be
posted here.
But Im hoping to catch someone who doesn't read comp.lang.perl.modules and
only this one.
(unlikely, but who knows)
I have found a similar question to this on dejanews, but there was no
answer.
I have posted elsewhere, but there was no answer.
I have been talking to myself, but there was no answer.
The show is:
Local system:
OS:Win98 (I do use Linux too, so dont shoot! :)
perl -v : Binary build 509 provided by ActiveState Tool Corp.
http://www.ActiveState.com
Built 13:37:15 Jan 5 1999
Net::FTP Version:
Copyright (c) 1995-1997 Graham Barr. All rights reserved.
(is all I could muster im affraid, any better way?, I did look, but I dont
have the UN*X install tar balls)
Script "printf" debugging says:
penelope FTP server (SunOS 5.6) ready.
User wk logged in.
CWD command successful.
Type set to A.
ASCII data connection for home.html (62.136.60.243,2360).
Transfer complete.
ASCII data connection for index.html (62.136.60.243,2361) (1123 bytes).
ASCII Transfer complete.
Goodbye.
<snip>
The script:
#!usr/bin/perl -w
#by Wayne Keenan, 24-04-99
#script to upload an HTML file containing a URL to the local IP address
#
#Improvement: supply a Template.html and fill in a $URL field.
#execution order:
# run Apache, this only works with apache ;)
# dial ISP
# run this script
use strict;
use FileHandle;
use Socket;
use Sys::Hostname;
use HTML::Stream;
use Net::FTP;
my ($remoteHost, $user, $pw, $remoteCwd, $localFile, $remoteFile, $title,
$url, $urlText)=@ARGV;
my $fd = new FileHandle ($localFile, "w");
my $HTML = new HTML::Stream $fd;
my $host = hostname();
my $addr = inet_ntoa(scalar(gethostbyname($host)) || 'localhost');
#perlfaq9 has $name not $host woops!
$HTML -> HTML
-> HEAD
-> TITLE -> t($title)
-> _TITLE
-> _HEAD
-> A(HREF=>"http:\\\\$addr$url")
-> t($urlText)
-> _A
-> _HTML;
undef $fd; #close file
my $ftp = Net::FTP->new($remoteHost, -TIMEOUT => 10) || die "Failed to
connect to $remoteHost. $!";
print $ftp -> message(), "\n";
$ftp->login($user,$pw) || die "Failed to login as $user, $pw.
$!";
print $ftp -> message(), "\n";
$ftp->cwd($remoteCwd) || die "Failed to change remote
directory to $remoteCwd. $!";
print $ftp -> message(), "\n";
$ftp->ascii();
print $ftp -> message(), "\n";
$ftp->put($localFile) || die "Failed to transer file
$localFile to $localFile.$!";
print $ftp -> message(), "\n";
#FOR testing: (it works!)
$remoteFile="index.html";
$ftp->get($remoteFile) || die "Failed to transer file
$localFile to $remoteFile.$!";
print $ftp -> message(), "\n";
$ftp->quit;
print $ftp -> message(), "\n";
unlink $localFile;
exit;
Right, there we go, not very complicated but also not very functional, does
anybody have any ideas?
I have also tried this with another FTP-Server (freeserve.net) but can only
assume that it is not
a microsoft server, they hide all tell tale sigs.
I have tried 2 ISP dial-ups, both through and not through a proxy.
Gibberingly,
Wayne
------------------------------
Date: Sat, 24 Apr 1999 17:25:32 -0700
From: lr@hpl.hp.com (Larry Rosler)
Subject: Re: Newbie regex query
Message-Id: <MPG.118c00c76b286b39989934@nntp.hpl.hp.com>
In article <moqsf7.mk.ln@magna.metronet.com> on Sat, 24 Apr 1999
12:16:22 -0400, Tad McClellan <tadmc@metronet.com> says...
> Thomas A. Bryan (tbryan@arlut.utexas.edu) wrote:
> : Andy Elvey wrote:
> : > I've been having a go with regexes - in particular, using them to get
> : > a simple derivative (calculus) script going. I'm trying to get the
> : > code to take a very simple function like 7x3 (7 times "x" cubed) and
> : > return the derivative (21x2).
>
> : I would have written this as 7x^3 and 21x^2.
>
> A Perl programmer would have used Perl's notation for exponentiation:
>
> 7x**3 and 21x**2
and for multiplication:
7*x**3 and 21*x**2
and might even throw in a couple of spaces (using the generous
definition of 'a couple' that we have learned here recently).
:-)
--
(Just Another Larry) Rosler
Hewlett-Packard Company
http://www.hpl.hp.com/personal/Larry_Rosler/
lr@hpl.hp.com
------------------------------
Date: Sat, 24 Apr 1999 23:50:13 GMT
From: dkcombs@netcom.com (David Combs)
Subject: Re: Numeric String
Message-Id: <dkcombsFApwvq.EGB@netcom.com>
In article <MPG.11846a9c9175d0cc9898d4@nntp.hpl.hp.com>,
><snip>
>`perldoc -q numeric` doesn't locate it, and `perldoc -q number` locates
>it and a whole lot more.
>
Sounds to me that "numeric" should be added to the index
or whatever perldoc works on.
------------------------------
Date: 24 Apr 1999 19:26:15 -0700
From: Tom Christiansen <tchrist@mox.perl.com>
Subject: Re: Numeric String
Message-Id: <37226f37@cs.colorado.edu>
[courtesy cc of this posting sent to cited author via email]
In comp.lang.perl.misc,
lr@hpl.hp.com (Larry Rosler) writes:
:`perldoc -q numeric` doesn't locate it, and `perldoc -q number` locates
:it and a whole lot more.
It's a silly thing, I fear, and hardly a substitute for running
a real grep on the real pods.
--tom
http://language.perl.com/misc/pmtools-1.00.tar.gz
--
I eschew embedded capital letters in names; to my prose-oriented eyes,
they are too awkward to read comfortably. They jangle like bad typography.
--Rob Pike
------------------------------
Date: 24 Apr 1999 23:14:08 GMT
From: mjtg@cus.cam.ac.uk (M.J.T. Guy)
Subject: Re: Perl 'split' function in C??
Message-Id: <7ftj80$s28$1@pegasus.csx.cam.ac.uk>
Jarkko Hietaniemi <jhi@alpha.hut.fi> wrote:
>
>Mike, I know you Brits have mastered the art of understatement but
>calling the Perl regex source 'a bit' dauntings verges on the naughty.
But it did daunt me. For a bit.
Mike Guy
------------------------------
Date: Sat, 24 Apr 1999 22:57:59 -0400
From: Zekers <zzekka@intrex.net>
Subject: Re: PERL Books
Message-Id: <372284B7.D42A34C4@intrex.net>
Jonathan Stowe wrote:
> On Fri, 23 Apr 1999 22:14:39 -0400 E. Preble wrote:
> > What are the best books out there for all levels of PERL writers?
> >
>
> A spot of token pedantry - it is Perl when you are talking about the
> language and perl when you are talking about the actual executable.
> As with most things with their origins in the Unix world it is case
> sensitive (and yes I am assiduously avoiding mentioning anything to
> do with acronyms :)
>
To be just a bit persnickety - it's UNIX not Unix. By why make a case out of it
;-?
------------------------------
Date: Sat, 24 Apr 1999 22:24:58 GMT
From: multilinks@my-dejanews.com
Subject: Remote access in CGI
Message-Id: <7ftgbo$qrj$1@nnrp1.dejanews.com>
Hi
I have a perl CGI script that I want to do one task when someone visiting my
web site uses it and do something else when accessed from a remote host or
refer. I am using :
$remote = $ENV{'REMOTE_ADDR'};
$refer = $ENV{'HTTP_REFERER'};
$ENV{'REMOTE_ADDR'} does not help and other hosts are able to cloak themselves
and make $ENV{'HTTP_REFERER'} return my web site's address.
So I have no sure way to identify who is accessing my web site from a browser
and who is using a script to access my script from another server.
Can someone help me. Thanks, Vladimir.
-----------== Posted via Deja News, The Discussion Network ==----------
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own
------------------------------
Date: 24 Apr 1999 23:08:18 -0000
From: Jonathan Stowe <gellyfish@gellyfish.com>
Subject: Re: Remote access in CGI
Message-Id: <7ftit2$3kv$1@gellyfish.btinternet.com>
On Sat, 24 Apr 1999 22:24:58 GMT multilinks@my-dejanews.com wrote:
>
> So I have no sure way to identify who is accessing my web site from a browser
> and who is using a script to access my script from another server.
>
Unless something eludes me here there is no difference.
/J\
--
Jonathan Stowe <jns@gellyfish.com>
Some of your questions answered:
<URL:http://www.btinternet.com/~gellyfish/resources/wwwfaq.htm>
Hastings: <URL:http://www.newhoo.com/Regional/UK/England/East_Sussex/Hastings>
------------------------------
Date: Sun, 25 Apr 1999 00:25:44 GMT
From: dkcombs@netcom.com (David Combs)
Subject: Re: Top 10 newbie errors?
Message-Id: <dkcombsFApyIw.G3B@netcom.com>
In article <371C5F26.817BB508@datenrevision.de>,
Philip Newton <Philip.Newton@datenrevision.de> wrote:
>Jerome O'Neil wrote:
>>
>> There is very little difference between:
>>
>> my($foo) = q{bar};
>>
>> and
>>
>> $foo = q{bar};
>
>OK, then how about this:
>
>1) my($foo) = localtime;
>
>2) my $foo = localtime;
>
>3) $foo = localtime;
>
>(Substitute anything returning different values in scalar and list
>contexts [such as an array] for localtime).
>
>1) makes $foo be the seconds, 2) and 3) make $foo be a string
>representing the current time.
>
>This probably makes some sort of argument, but I'm not sure what kind.
>
>Cheers,
>Philip
A *really* stupid question -- but I have yet to understand
this "paren single-item paren" stuff with my.
Please explain a bit for idiots like me.
Thanks!
David
------------------------------
Date: Sat, 24 Apr 1999 21:25:52 -0400
From: Jay Glascoe <jglascoe@giss.nasa.gov>
Subject: Re: Top 10 newbie errors?
Message-Id: <37226F1F.1590EEE1@giss.nasa.gov>
David Combs wrote:
>
> In article <371C5F26.817BB508@datenrevision.de>,
> Philip Newton <Philip.Newton@datenrevision.de> wrote:
> >
> >OK, then how about this:
> >
> >1) my($foo) = localtime;
> >
> >2) my $foo = localtime;
> >
> >3) $foo = localtime;
or perhaps:
my $foo = () = localtime;
my $foo = map localtime, 'foo';
both set "$foo" to the length of "localtime()"s return list.
------------------------------
Date: Sun, 25 Apr 1999 01:36:11 GMT
From: dragons@dragons.duesouth.net (Matthew Bafford)
Subject: Re: Top 10 newbie errors?
Message-Id: <slrn7i4r48.vc.dragons@dragons.duesouth.net>
On Sun, 25 Apr 1999 00:25:44 GMT, David Combs <dkcombs@netcom.com>
lucked upon a computer, and thus typed in the following:
: A *really* stupid question -- but I have yet to understand
: this "paren single-item paren" stuff with my.
Simple:
my $var = localtime;
puts the RHS in scalar context. Thus localtime returns the current time
all pretty like.
my ($var) = localtime;
puts the RHS in list context. Thus localtime returns a list of items
(for more details perldoc -f localtime). This list is distributed
amongst the LHS, with $var getting the first item (seconds in the case of
localtime), and the rest going byebye.
: Please explain a bit for idiots like me.
s/idiot/people new to the language who really haven't mastered all of the
ins and outs yet, /
: Thanks!
HTH!
: David
--Matthew
------------------------------
Date: Sat, 24 Apr 1999 23:47:39 GMT
From: dkcombs@netcom.com (David Combs)
Subject: Re: Weird problem with perl 5.003, Solaris 2.6 and VXFS
Message-Id: <dkcombsFApwrG.E84@netcom.com>
In article <7fddq1$5n4$1@mentor.telis.org>,
Rick Stikkers <rstikkers@telis.org> wrote:
>
>Rolf Petter Halle wrote in message ...
>>Hi!
>>
>>We're experiencing some strange problems with perl 5.003 on a
>>multi processor sparc running Solaris 2.6 with VXFS.
>>
>>A perl script which usually finishes after about 5 user seconds, takes
>>15 seconds when the perl binary is some hours or days older. The
>>script regains speed if the binary is copied, before loosing speed
>>after a few more hours or days.
>>
>>A slow run is like this:
>>
>># time -p ./perl script
>>print dill:500000500002, delta: 15
>>
>>real 15.67
>>user 14.08
>>sys 0.00
>>
>>which can be speeded up by copying
>>
>># cp ./perl ./perl.copy
>># time -p ./perl.copy script
>>print dill:500000500002, delta: 4
>>
>>real 4.42
>>user 4.20
>>sys 0.02
>>
>>The perl binary is located on a VXFS filesystem. An identical copy on
>>a UFS filesystem never appears to be slow.
>>
>>Both perl 5.004 and 5.005 seems to run all right, but I'm not sure if
>>the problem is only related to 5.003, thus I'd be grateful for any
>>tips or hints about what could be wrong.
>>
>>A truss/strace does not indicate any differences between the two runs,
>>except the time.
>>
>>Details about the system, perl and script are below.
>>
>>Thanks.
>>
>>Rolf Halle <rph@nextel.no>
>
>
>It could just be that after the program is copied, it is still in the disk
>cache, so the computer does not have to go get the program over the network.
>Try running cat on the script to get it into the disk cache, then run the
>program again to see if that speeds it up.
>
> Rick
>
>
Does this happen with everyone running 2.6?
How about 2.7?
]
(I am running 2.5.1, am thinking of switching to -- which
one (if any) should it be?
Thanks!
David Combs dkcombs@netcom.com
------------------------------
Date: 12 Dec 98 21:33:47 GMT (Last modified)
From: Perl-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Special: Digest Administrivia (Last modified: 12 Dec 98)
Message-Id: <null>
Administrivia:
Well, after 6 months, here's the answer to the quiz: what do we do about
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]From: Russ Allbery <rra@stanford.edu>
]Date: 21 Sep 1998 19:53:43 -0700
]Subject: comp.lang.perl.moderated available via e-mail
]
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------------------------------
End of Perl-Users Digest V8 Issue 5476
**************************************
