Run an external program and capture its output
Firstly, please forgive me if this isn't the right place for asking this question. I tried a couple of programmer's forums but up to now, my question hasn't even gained one answer! And yet it seems like a simple (and probably very common) requirement. I'm hoping that someone here will take pity on me! I've been using Strawberry perl for about 6 months and I'm generally happy with it. The one thing I just can't seem to make it do is to run an external program and capture that program's output to a file. I came across perl's 'system' command. Let's say I add these lines to a perl script:- @my_command = ( "the_exe_name", "arg1", "arg2", "etc" ); system(@my_command); If I now open a DOS window and run the perl script, sure enough, it runs 'the_exe_name'. And if my exe produces any text output I can see that output in my DOS window.. Suppose my perl script is called "my_perl_script.pl". If I try to redirect its text output (like this) something interesting happens:- my_perl_script.pl > output.txt The above seems to work in Windows 7. However, it doesn't work in Windows 8 or Windows XP. In both cases, the file "output.txt" does get created. And in both cases I no longer see the exe's output text in my DOS window (i.e. as if it's getting redirected to the file). But at the end of the process (in both cases) output.txt will be an empty file. :-( My next thought was to handle any redirection within the actual perl script - i.e. @my_command = ( "the_exe_name", "arg1", "arg2", "etc" ">", "output.txt" ); system(@my_command); Unfortunately, that doesn't seem to work either (again, it always creates an empty file). Is there a way to achieve this using Strawberry perl? Or am I making some rookie mistake here? Admittedly I'm not very experienced with perl but I'm amazed that such a simple task seems to defeat it :-( Thanks for any help. John
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Never mind. I'm getting lesdyxic in my old age. Sent from my iPad > On Apr 16, 2014, at 18:52, "Jan Dubois" wrote: > > On Wed, Apr 16, 2014 at 3:37 PM, wrote: > > > > Folks, I just ftped to the link below and found pari.2.7.0.tar.gz. Isn't that > > what we're looking for or am I missing something? > > From http://cpansearch.perl.org/src/ILYAZ/Math-Pari-2.01080605/README: > > > (2.01080* still fully supports only 2.1.7, but mostly works with 2.3.* too.) > > There is a dev release with support for 2.3, but no indication that > anyone has ever managed to build with 2.7. Good luck! :) > > Cheers, > -Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
On Wed, Apr 16, 2014 at 3:37 PM, wrote: > > Folks, I just ftped to the link below and found pari.2.7.0.tar.gz. Isn't that > what we're looking for or am I missing something? >From http://cpansearch.perl.org/src/ILYAZ/Math-Pari-2.01080605/README: > (2.01080* still fully supports only 2.1.7, but mostly works with 2.3.* too.) There is a dev release with support for 2.3, but no indication that anyone has ever managed to build with 2.7. Good luck! :) Cheers, -Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Folks, I just ftped to the link below and found pari.2.7.0.tar.gz. Isn't that
what we're looking for or am I missing something?
Sent from my iPad
> On Apr 16, 2014, at 4:50 PM, "Jan Dubois" wrote:
>
> On Wed, Apr 16, 2014 at 1:46 PM, kmx wrote:
> > The reason is simple - it does not build anymore as it is not able to find
> > required pari source tarball at
> > ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/
>
> Here is a quick-and-dirty patch to work around this (but hard-wires
> you to 2.1.7):
>
> --- a/utils/Math/PariBuild.pm
> +++ b/utils/Math/PariBuild.pm
> @@ -301,7 +301,7 @@ EOP
> }
>
> $base_url = "ftp://$host$dir";;
> -my @extra_chdir = qw(OLD);
> +my @extra_chdir = qw(OLD/2.1);
> print "Getting GP/PARI from $base_url\n";
>
> eval {
>
> Cheers,
> -Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
On Wed, Apr 16, 2014 at 2:35 PM, wrote: > Suggestion - maybe you can pull the file that is being fetched (I assume its > pari217.exe) and install it locally once and for all? If the pari lib is > found locally, will the build bother to attempt to go out and get it? It is pari-2.1.7.tgz, but yes, if it is copied into the unpacked Math-Pari distribution, then it won't try to download it during `perl Makefile.PL` time. Cheers, -Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Suggestion - maybe you can pull the file that is being fetched (I assume
its pari217.exe) and install it locally once and for all? If the pari lib
is found locally, will the build bother to attempt to go out and get it? I
worry that someday, pari217.exe will disappear.
--
Matthew O. Persico
Lazard
30 Rockefeller Plaza
New York, NY 10112
212 632 6136
From: kmx
To: Win32 Perl mailing list
Date: 04/16/2014 05:21 PM
Subject:Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Excellent, I have put patched version at
http://strawberryperl.com/package/kmx/perl-modules-patched/Math-Pari-2.01080605_patched.tar.gz
Simply run:
cpanm
http://strawberryperl.com/package/kmx/perl-modules-patched/Math-Pari-2.01080605_patched.tar.gz
-v
--
kmx
On 16.4.2014 22:50, Jan Dubois wrote:
On Wed, Apr 16, 2014 at 1:46 PM, kmx wrote:
The reason is simple - it does not build anymore as it is not able to find
required pari source tarball at
ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/
Here is a quick-and-dirty patch to work around this (but hard-wires
you to 2.1.7):
--- a/utils/Math/PariBuild.pm
+++ b/utils/Math/PariBuild.pm
@@ -301,7 +301,7 @@ EOP
}
$base_url = "ftp://$host$dir";;
-my @extra_chdir = qw(OLD);
+my @extra_chdir = qw(OLD/2.1);
print "Getting GP/PARI from $base_url\n";
eval {
Cheers,
-Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
2014-04-16 15:04 GMT+02:00 Alexandr Ciornii : > A specially created server ( > http://blog.meldium.com/home/2014/4/10/testing-for-reverse-heartbleed > , in Russian: http://www.xakep.ru/post/62350/default.asp ) can send > similar request to client. But such attack has low probability. > It is not recommended to use such online services. Some really try to capture as much as they can from your system. Instead, use an open source offline solution that you run yourself for your machine : pacemaker. https://github.com/Lekensteyn/pacemaker I verified that openssl bundled with StrawberryPerl 5.18.2.1 is vulnerable. You can reproduce it like this (while pacemaker.py is running): C:\strawberry\c\bin\openssl s_client -connect 127.0.0.1:4433
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Excellent, I have put patched version at
http://strawberryperl.com/package/kmx/perl-modules-patched/Math-Pari-2.01080605_patched.tar.gz
Simply run:
cpanm
http://strawberryperl.com/package/kmx/perl-modules-patched/Math-Pari-2.01080605_patched.tar.gz
-v
--
kmx
On 16.4.2014 22:50, Jan Dubois wrote:
On Wed, Apr 16, 2014 at 1:46 PM, kmx wrote:
The reason is simple - it does not build anymore as it is not able to find
required pari source tarball at
ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/
Here is a quick-and-dirty patch to work around this (but hard-wires
you to 2.1.7):
--- a/utils/Math/PariBuild.pm
+++ b/utils/Math/PariBuild.pm
@@ -301,7 +301,7 @@ EOP
}
$base_url = "ftp://$host$dir";;
-my @extra_chdir = qw(OLD);
+my @extra_chdir = qw(OLD/2.1);
print "Getting GP/PARI from $base_url\n";
eval {
Cheers,
-Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
On Wed, Apr 16, 2014 at 1:46 PM, kmx wrote:
> The reason is simple - it does not build anymore as it is not able to find
> required pari source tarball at
> ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/
Here is a quick-and-dirty patch to work around this (but hard-wires
you to 2.1.7):
--- a/utils/Math/PariBuild.pm
+++ b/utils/Math/PariBuild.pm
@@ -301,7 +301,7 @@ EOP
}
$base_url = "ftp://$host$dir";;
-my @extra_chdir = qw(OLD);
+my @extra_chdir = qw(OLD/2.1);
print "Getting GP/PARI from $base_url\n";
eval {
Cheers,
-Jan
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
The reason is simple - it does not build anymore as it is not able to find
required pari source tarball at ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/
Try: cpanm Math::Pari -v
...
Getting GP/PARI from ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/
Not in this directory, now chdir('OLD')...
Did not find any file matching
/((?:.*\/)?pari\W*(?!2\.(?:[3-9]|\d\d+)\.)(\d+\.\d+\.\d+).*\.t(?:ar\.)?gz)$/ via
FTP
...
Not in this directory, trying
`ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/OLD/'...
Did not find any file matching
/((?:.*\/)?pari\W*(?!2\.(?:[3-9]|\d\d+)\.)(\d+\.\d+\.\d+).*\.t(?:ar\.)?gz)$/ via
FTP.
...
In January 2014 the installation worked so that's why it is included in
5.18.2.1 and not in 5.18.2.2
Another trouble with Math::Pari (in fact it is a trouble with underlying
pari library) is that it has never built correctly with 64bit compiler on
MS Windows.
--
kmx
On 16.4.2014 22:07, matthew.pers...@lazard.com wrote:
Any reason why 5.18.2.2 excludes Math::Pari?
Math::Pari is used (a couple of levels down) by Net::SFTP. Net::SFTP is
the reason I converted TO Strawberry about three weeks ago.
Please advise...
--
Matthew O. Persico
Lazard
30 Rockefeller Plaza
New York, NY 10112
212 632 6136
From: kmx
To: win32-vanilla@perl.org
Date: 04/16/2014 01:31 AM
Subject: Re: StrawberryPerl and the OpenSSL "heartbleed" bug
---
Olivier,
You can try updated strawberry perl from:
_
__http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit.msi__
__http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit.msi__
__http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit.zip__
__http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit.zip__
__http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit-portable.zip__
__http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit-portable.zip_
--
kmx
On 15.4.2014 0:36, kmx wrote:
Hi,
you can get updated openssl binaries from:
- _http://strawberryperl.com/package/kmx/64_libs/gcc47-2014Q1/_
- _http://strawberryperl.com/package/kmx/32_libs/gcc47-2014Q1/_
I am considering releasing strawberry perl 5.18.2.2 (with new openssl)
before the end of April.
--
kmx
On 12.4.2014 20:45, Olivier Mengué wrote:
Hi,
You have probably heard of the now famous "heartblead" bug of the OpenSSL
library.
_http://heartbleed.com/_
StrawberryPerl is bundled with a binary of the OpenSSL library so I'm
wondering if StrawberryPerl is affected by the bug.
I had a look at the release notes of StrawberryPerl to look for the
version number of the OpenSSL and all versions of StrawberryPerl since at
least 5.16.0.1 have an OpenSSL in the range affected by the heartbleed bug.
It would be helpful to have an official statement from the StrawberryPerl
team regarding this issue and to display it prominently on the
StrawberryPerl.com page.
Olivier Mengué
_https://metacpan.org/author/DOLMEN_
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Any reason why 5.18.2.2 excludes Math::Pari? Math::Pari is used (a couple of levels down) by Net::SFTP. Net::SFTP is the reason I converted TO Strawberry about three weeks ago. Please advise... -- Matthew O. Persico Lazard 30 Rockefeller Plaza New York, NY 10112 212 632 6136 From: kmx To: win32-vanilla@perl.org Date: 04/16/2014 01:31 AM Subject:Re: StrawberryPerl and the OpenSSL "heartbleed" bug Olivier, You can try updated strawberry perl from: http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit.msi http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit.msi http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit.zip http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit.zip http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit-portable.zip http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit-portable.zip -- kmx On 15.4.2014 0:36, kmx wrote: Hi, you can get updated openssl binaries from: - http://strawberryperl.com/package/kmx/64_libs/gcc47-2014Q1/ - http://strawberryperl.com/package/kmx/32_libs/gcc47-2014Q1/ I am considering releasing strawberry perl 5.18.2.2 (with new openssl) before the end of April. -- kmx On 12.4.2014 20:45, Olivier Mengué wrote: Hi, You have probably heard of the now famous "heartblead" bug of the OpenSSL library. http://heartbleed.com/ StrawberryPerl is bundled with a binary of the OpenSSL library so I'm wondering if StrawberryPerl is affected by the bug. I had a look at the release notes of StrawberryPerl to look for the version number of the OpenSSL and all versions of StrawberryPerl since at least 5.16.0.1 have an OpenSSL in the range affected by the heartbleed bug. It would be helpful to have an official statement from the StrawberryPerl team regarding this issue and to display it prominently on the StrawberryPerl.com page. Olivier Mengué https://metacpan.org/author/DOLMEN
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
A specially created server ( http://blog.meldium.com/home/2014/4/10/testing-for-reverse-heartbleed , in Russian: http://www.xakep.ru/post/62350/default.asp ) can send similar request to client. But such attack has low probability. 2014-04-16 15:40 GMT+03:00 : > Does it matter if you are only using client-side SSL, if you are not running > a server with Strawberry but just connecting to sites? -- Alexandr Ciornii, http://chorny.net
Re: StrawberryPerl and the OpenSSL "heartbleed" bug
Does it matter if you are only using client-side SSL, if you are not running a server with Strawberry but just connecting to sites? -- Matthew > On Apr 16, 2014, at 1:31, "kmx" wrote: > > Olivier, > > You can try updated strawberry perl from: > > http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit.msi > > http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit.msi > http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit.zip > http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit.zip > http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-32bit-portable.zip > http://strawberryperl.com/download/5.18.2.2/strawberry-perl-5.18.2.2-64bit-portable.zip > > -- > kmx > >> On 15.4.2014 0:36, kmx wrote: >> Hi, >> >> you can get updated openssl binaries from: >> - http://strawberryperl.com/package/kmx/64_libs/gcc47-2014Q1/ >> - http://strawberryperl.com/package/kmx/32_libs/gcc47-2014Q1/ >> >> I am considering releasing strawberry perl 5.18.2.2 (with new openssl) >> before the end of April. >> >> -- >> kmx >> >>> On 12.4.2014 20:45, Olivier Mengué wrote: >>> Hi, >>> >>> You have probably heard of the now famous "heartblead" bug of the OpenSSL >>> library. >>> http://heartbleed.com/ >>> >>> StrawberryPerl is bundled with a binary of the OpenSSL library so I'm >>> wondering if StrawberryPerl is affected by the bug. >>> >>> I had a look at the release notes of StrawberryPerl to look for the version >>> number of the OpenSSL and all versions of StrawberryPerl since at least >>> 5.16.0.1 have an OpenSSL in the range affected by the heartbleed bug. >>> >>> It would be helpful to have an official statement from the StrawberryPerl >>> team regarding this issue and to display it prominently on the >>> StrawberryPerl.com page. >>> >>> Olivier Mengué >>> https://metacpan.org/author/DOLMEN >
