Re: Getting the results of a remote script
Hi Shlomi, On Friday 10 November 2017 11:52:12 Shlomi Fish wrote: > > While I agree, see http://seriot.ch/parsing_json.php for a roundup of > security problems and inconsistencies in JSON parsers. Thanks for this, I'll give it a look when I get the chance. Thankfully, so far I haven't seen any problems with it's use. > > >It also helps when combining PERL and PHP apps > > "Perl" is not an acronym - see > http://perl-begin.org/learn/Perl-perl-but-not-PERL/ and > https://github.com/perl-doc-cats/perlfaq/blob/master/lib/perlfaq1.pod#whats >-the-difference-between-perl-and-perl . I've given in trying to remember which Perl is the right PERL. While the sun is still shining, there are better things to spend my time on :D > > Regards, > > Shlomi -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Getting the results of a remote script
Hi Gary, On Fri, 10 Nov 2017 09:48:30 + Gary Stainburn wrote: > On Friday 10 November 2017 00:08:09 SSC_perl wrote: > > > On Nov 9, 2017, at 2:06 PM, David Precious wrote: > > > > > > you'll get whatever the script output to STDOUT. > > > > Thanks a million, Dave! STDOUT was what I was missing. I've never > > used that before, so this was news to me. The remote script now returns a > > string that I can manipulate and use in the local script. > > > > Thanks again, > > Frank > > I would also look at using JSON for anything other than simple examples. I > use this technique extensively for custom peer-to-peer apps. > > I have even develope a small xinetd service to accept incoming connections. > > This has then enabled me to use Net::telnet in client scripts to generate > interactive services. JSON is a good, consistent method of transferring > data. While I agree, see http://seriot.ch/parsing_json.php for a roundup of security problems and inconsistencies in JSON parsers. >It also helps when combining PERL and PHP apps > "Perl" is not an acronym - see http://perl-begin.org/learn/Perl-perl-but-not-PERL/ and https://github.com/perl-doc-cats/perlfaq/blob/master/lib/perlfaq1.pod#whats-the-difference-between-perl-and-perl . Regards, Shlomi -- - Shlomi Fish http://www.shlomifish.org/ http://is.gd/i5eMQd - Emma Watson’s Interview for a Software Dev Job Chuck Norris once jumped out of a plane, and the parachute did not open. So instead Chuck Norris opened and brought him and the parachute down safely. (By Andrew Brehm) — http://www.shlomifish.org/humour/bits/facts/Chuck-Norris/ Please reply to list if it's a mailing list post - http://shlom.in/reply . -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Getting the results of a remote script
On Friday 10 November 2017 00:08:09 SSC_perl wrote: > > On Nov 9, 2017, at 2:06 PM, David Precious wrote: > > > > you'll get whatever the script output to STDOUT. > > Thanks a million, Dave! STDOUT was what I was missing. I've never used > that before, so this was news to me. The remote script now returns a > string that I can manipulate and use in the local script. > > Thanks again, > Frank I would also look at using JSON for anything other than simple examples. I use this technique extensively for custom peer-to-peer apps. I have even develope a small xinetd service to accept incoming connections. This has then enabled me to use Net::telnet in client scripts to generate interactive services. JSON is a good, consistent method of transferring data. It also helps when combining PERL and PHP apps -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Getting the results of a remote script
> On Nov 9, 2017, at 2:06 PM, David Precious wrote: > > you'll get whatever the script output to STDOUT. Thanks a million, Dave! STDOUT was what I was missing. I've never used that before, so this was news to me. The remote script now returns a string that I can manipulate and use in the local script. Thanks again, Frank -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Getting the results of a remote script
On Thu, 9 Nov 2017 12:50:05 -0800 SSC_perl wrote: > > On Nov 8, 2017, at 5:16 PM, thelip sia wrote: > > > > you can use backtick to store the output. > > $list = `ssh usern...@domain.com > > '/usr/bin/perl /path/to/dir-list.pl'`; > > Thanks, Heince. I had mistakenly thought those were > synonymous with each other. And, of course, this morning, doing a > new search produced the backtick solution. However, every example I > found was for a unix command, not a perl script. > > Using the backticks returns nothing, so perhaps my remote > script may not be set up properly to "export" it's result? Sorry - > I've never dealt with WAN solutions like this before so I don't even > know how to put it. Using backticks will capture the output of the script, i.e. what it wrote to STDOUT. If it didn't output anything, then you won't get anything. [...] > As I mentioned, my remote script produces an array of > directory names that I need to use in my local script. The array is > populated correctly, but I can't see it in my local script. Your script won't see any variables etc that were set in the other script - all you'll have is a blob of text of whatever it output on STDOUT. > Can the result of a remote script be used in a local script > by calling it via SSH or some other means? If so, how do you get the > result back? This is not a CGI script - that was only an example > path I used. As above, you'll get whatever the script output to STDOUT. Its output could be just a list of filenames which you can then iterate over, or it could be some JSON or your serialisation format of preference which you can then deserialise - whatever you like. For robustness, you probably want to check $? after using backticks to see the return status, to know if the remote script was executed successfully or not. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Getting the results of a remote script
> On Nov 8, 2017, at 5:16 PM, thelip sia wrote: > > you can use backtick to store the output. > $list = `ssh usern...@domain.com '/usr/bin/perl /path/to/dir-list.pl'`; Thanks, Heince. I had mistakenly thought those were synonymous with each other. And, of course, this morning, doing a new search produced the backtick solution. However, every example I found was for a unix command, not a perl script. Using the backticks returns nothing, so perhaps my remote script may not be set up properly to "export" it's result? Sorry - I've never dealt with WAN solutions like this before so I don't even know how to put it. 5 hours later... I've since decided to offload a portion of my local script to the remote script to avoid the back-and-forth. However, I'm still curious if this can even be done. As I mentioned, my remote script produces an array of directory names that I need to use in my local script. The array is populated correctly, but I can't see it in my local script. Can the result of a remote script be used in a local script by calling it via SSH or some other means? If so, how do you get the result back? This is not a CGI script - that was only an example path I used. Thanks, Frank -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Getting the results of a remote script
$list = system('ssh usern...@domain.com '/usr/bin/perl /cgi-bin/dir-list.pl
'");
Hmm, if it's a cgi-bin script, wouldn't use LWP (or curl or ...) work too?
On Wed, Nov 8, 2017 at 6:15 PM, SSC_perl wrote:
> I have a script on a remote server that creates a list of all
> directories on the server that end in a dash. I need that list on my
> laptop. Is it possible to get the result into a variable in my local
> script by triggering the remote script via ssh? I've tried this:
>
> $list = system('ssh usern...@domain.com '/usr/bin/perl /cgi-bin/
> dir-list.pl'");
>
> but it just returns '0'. The system call is working fine - I just can't
> get the result returned in $list.
>
> Searching hasn't returned an answer. Is there another way to get
> what I'm after?
>
> Thanks,
> Frank
> --
> To unsubscribe, e-mail: beginners-unsubscr...@perl.org
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>
>
>
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Re: Getting the results of a remote script
On Thu, 9 Nov 2017 08:16:47 +0700
thelip sia wrote:
> you can use backtick to store the output.
> $list = `ssh usern...@domain.com '/usr/bin/perl /cgi-bin/dir-list.pl'`;
>
Indeed, but note that one should be careful when interpolating strings there:
* http://perl-begin.org/topics/security/code-markup-injection/
* https://metacpan.org/pod/String::ShellQuote
Also see
http://perl-begin.org/tutorials/bad-elements/#declaring_all_vars_at_top
regarding predeclaration.
> Regards,
> Heince
>
> On Thu, Nov 9, 2017 at 7:15 AM, SSC_perl wrote:
>
> > I have a script on a remote server that creates a list of all
> > directories on the server that end in a dash. I need that list on my
> > laptop. Is it possible to get the result into a variable in my local
> > script by triggering the remote script via ssh? I've tried this:
> >
> > $list = system('ssh usern...@domain.com '/usr/bin/perl /cgi-bin/
> > dir-list.pl'");
> >
> > but it just returns '0'. The system call is working fine - I just can't
> > get the result returned in $list.
> >
> > Searching hasn't returned an answer. Is there another way to get
> > what I'm after?
> >
> > Thanks,
> > Frank
> > --
> > To unsubscribe, e-mail: beginners-unsubscr...@perl.org
> > For additional commands, e-mail: beginners-h...@perl.org
> > http://learn.perl.org/
> >
> >
> >
--
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an abysmal format.
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Re: Getting the results of a remote script
you can use backtick to store the output.
$list = `ssh usern...@domain.com '/usr/bin/perl /cgi-bin/dir-list.pl'`;
Regards,
Heince
On Thu, Nov 9, 2017 at 7:15 AM, SSC_perl wrote:
> I have a script on a remote server that creates a list of all
> directories on the server that end in a dash. I need that list on my
> laptop. Is it possible to get the result into a variable in my local
> script by triggering the remote script via ssh? I've tried this:
>
> $list = system('ssh usern...@domain.com '/usr/bin/perl /cgi-bin/
> dir-list.pl'");
>
> but it just returns '0'. The system call is working fine - I just can't
> get the result returned in $list.
>
> Searching hasn't returned an answer. Is there another way to get
> what I'm after?
>
> Thanks,
> Frank
> --
> To unsubscribe, e-mail: beginners-unsubscr...@perl.org
> For additional commands, e-mail: beginners-h...@perl.org
> http://learn.perl.org/
>
>
>
Getting the results of a remote script
I have a script on a remote server that creates a list of all
directories on the server that end in a dash. I need that list on my laptop.
Is it possible to get the result into a variable in my local script by
triggering the remote script via ssh? I've tried this:
$list = system('ssh usern...@domain.com '/usr/bin/perl /cgi-bin/dir-list.pl'");
but it just returns '0'. The system call is working fine - I just can't get
the result returned in $list.
Searching hasn't returned an answer. Is there another way to get what
I'm after?
Thanks,
Frank
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