From unknown Sat May 16 19:37:41 2026 X-Loop: owner@bugs.x2go.org Subject: Bug#1133: [X2Go-Dev] Bug#1133: Bug#1133: Inconsistent Perl used by server or its agent on connect Reply-To: Ted Toal , 1133@bugs.x2go.org Resent-From: Ted Toal Resent-To: x2go-dev@lists.x2go.org Resent-CC: X2Go Developers X-Loop: owner@bugs.x2go.org Resent-Date: Wed, 11 Jan 2017 01:50:01 +0000 Resent-Message-ID: Resent-Sender: owner@bugs.x2go.org X-X2Go-PR-Message: followup 1133 X-X2Go-PR-Package: nxagent X-X2Go-PR-Keywords: not-a-bug Received: via spool by 1133-submit@bugs.x2go.org id=B1133.14840993006664 (code B ref 1133); Wed, 11 Jan 2017 01:50:01 +0000 Received: (at 1133) by bugs.x2go.org; 11 Jan 2017 01:48:20 +0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on ymir.das-netzwerkteam.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,URIBL_BLOCKED autolearn=ham version=3.3.2 Received: from localhost (localhost [127.0.0.1]) by ymir.das-netzwerkteam.de (Postfix) with ESMTP id 1EF123CC60 for <1133@bugs.x2go.org>; Wed, 11 Jan 2017 02:48:18 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at ymir.das-netzwerkteam.de Received: from ymir.das-netzwerkteam.de ([127.0.0.1]) by localhost (ymir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id J3XYQRvZQZmt for <1133@bugs.x2go.org>; Wed, 11 Jan 2017 02:48:11 +0100 (CET) Received: from mail-pf0-f180.google.com (mail-pf0-f180.google.com [209.85.192.180]) by ymir.das-netzwerkteam.de (Postfix) with ESMTPS id 918D03CC5F for <1133@bugs.x2go.org>; Wed, 11 Jan 2017 02:48:10 +0100 (CET) Received: by mail-pf0-f180.google.com with SMTP id 189so44029994pfu.3 for <1133@bugs.x2go.org>; Tue, 10 Jan 2017 17:48:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ucdavis-edu.20150623.gappssmtp.com; s=20150623; h=from:content-transfer-encoding:mime-version:subject:date:references :to:in-reply-to:message-id; bh=g2AjZs9Gpsf9+yvvk8n6oJkwYAacS8gO/hT6jWa6SyE=; b=X4Evko1y9WmU3GFyrBJX1wP5mzGKsMFSn++8JHsFxHVLsrMk4fgKDadjEF5IdHaDlE Q4MkTc/Bu4TUnjPAQ6Zz6NpKfEKT4OniiBxVSre34ka1niKWhGIKlUI+iCwPtPqD9crC BilnrO0F+zbaNm68KpBYSZ/PVaL/cqYrxlli9zKJfltBXToMergfZEAmQo8iv8R2CcCh kGE4+Nk0jv3yEeCkuYtkDQQZ6b7K+4ZJN5tdpR2ZcpO1ilo7rKcrdv1lR7z0mN3x+2MF 0/SoZ9pu+qxqiG3Y5DmxXTnBwTylnpNYKxHINFWxFsIOITRrSU2nVZihKQoVQ1EmmmyU NeiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:date:references:to:in-reply-to:message-id; bh=g2AjZs9Gpsf9+yvvk8n6oJkwYAacS8gO/hT6jWa6SyE=; b=nqXrLqr2Vbe6nlAbf4TpcIl46A4+lUFWo/4+FmMlhCZo3s52W/vHWpkkr/xLG5IKOl RTB754sxEaQ7tryeLbt4ITB3UijloTQBn6JxnD5rEZ4jwWJI8b+FhC810pQKKUuD7nwx 92C9ouRNsWGURB/38o5NtskeMEBBXX7qV3srmSZ5j6WM+in02NeShERRv2a3alhlWDr0 9aQJGbDg4RTwQSed5od67v7QIc6mnaFRmJ1kqY3bAcPDIPR9E0Sxhh2KlxQBjPzaHIdZ ehP88t3C/g7Z6Yr+jReJlT9wsoLdM1bNlIPAZwsFtXN2IZali1H+tY5eN4ShGZzY7ILH wTAQ== X-Gm-Message-State: AIkVDXLwTZkedjwx2QjQeSiQzYlh4qXTEnNCWMErYBcW6LlCVQWzvBYHJjzoR9vPyv0XFw== X-Received: by 10.99.142.65 with SMTP id k62mr7580822pge.157.1484099288779; Tue, 10 Jan 2017 17:48:08 -0800 (PST) Received: from dhcp22-gc1.genomecenter.ucdavis.edu (dhcp22-gc1.genomecenter.ucdavis.edu. [128.120.136.85]) by smtp.gmail.com with ESMTPSA id e90sm2060904pfl.32.2017.01.10.17.48.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 10 Jan 2017 17:48:07 -0800 (PST) From: Ted Toal Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\)) Date: Tue, 10 Jan 2017 17:48:06 -0800 References: <7a1f025f-6a4f-9c6a-ffe6-4d18a712da86@baur-itcs.de> <836dd91e-6bc3-35e1-3759-e66b55715b1b@baur-itcs.de> To: Stefan Baur , 1133@bugs.x2go.org In-Reply-To: <836dd91e-6bc3-35e1-3759-e66b55715b1b@baur-itcs.de> Message-Id: <35BC44E5-C0D7-4B77-A09E-FBD00AD5193E@ucdavis.edu> X-Mailer: Apple Mail (2.3259) perl has the -l option for specifying the PERL5LIB path. That option = can, and I think should, be used on the shebang of the x2go perl = scripts: #!/usr/bin/perl -l /usr/lib/perl5 or something like that. I know the shebang line allows args. Ted > On Jan 10, 2017, at 3:42 PM, Stefan Baur = wrote: >=20 > Ted, >=20 > let's examine a few things here: >=20 > You're saying that nxagent is doing things in Perl, and not the right > things. When examining the contents of the nxagent package, all I'm > seeing wrt/ executables are bash scripts and compiled binaries, but > nothing written in Perl. > So the nxagent package can't be at fault. >=20 > We *do* have scripts that are written in Perl, and that might throw = the > error you quoted. Those are e.g. in the package with the name > x2goserver (and I wouldn't be surprised to find more of them in other > packages that have names beginning with x2go*). >=20 > grep '^#!.*perl*' /usr/bin/x2go* returns a list of scripts that all = have > #!/usr/bin/perl as shebang, so yes, it's probably safe to say that the > use of /usr/bin/perl as the Perl interpreter for our scripts is = hardcoded. >=20 > But again, that's not a bug, but how scripting works on Linux/Unix. > First line with shebang tells the shell which interpreter to use, so = you > don't have to prefix the script name with the name of the interpreter > each time. >=20 > And of course, if you set a variable with a name matching one that "a" > Perl interpreter (be it ActivePerl or the system standard shipped with > your distribution) looks for, it will use it. >=20 > Your statement that the version of Perl being used depends on which = one > comes first in the path might be true on Windows; on Unix, it will = only > be true for when you type "perl" without a path in an interactive = shell, > or for when call it from within, say, a bash script without preceding = it > with a path. > Once you chmod +x a Perl script and call it by its name, without > prefacing the name and full path to the interpreter, the shebang line > will be used to determine the interpreter. >=20 > So, if you need to set PERL5LIB for your ActivePerl installation, it > should be unset (by adding a suitable if/then clause) when your = .bashrc > / .bash_profile are read and parsed by an X2Go task. > It's kind of weird that, according to your other bug report, you have > exactly 0 indication that you're running from within an X2Go session. > I can see how that makes it difficult to script around it ;-) - but > let's track that in the other bug report. >=20 > Kind Regards, > Stefan Baur >=20 > Am 10.01.2017 um 23:48 schrieb Ted Toal: >> I disagree. Perl behavior is to look at env. var. PERL5LIB to find = its library. This should be set to match the Perl that is being = invoked, which is normally done by placing that Perl=E2=80=99s bin = directory on the path. Since I did place it on the path, there are only = two possibilities for why x2go ran /usr/bin/perl: either it hard-coded = the path to Perl, in which case it should first set PERL5LIB (or maybe = there is a Perl command line arg to specify the library folder), OR x2go = ignored my changes to PATH when it ran perl (in which case it should = also ignore PERL5LIB). >>=20 >> - Ted >>=20 >>=20 >>=20 >>=20 >>> On Jan 10, 2017, at 2:35 PM, Stefan Baur = wrote: >>>=20 >>> Control: close -1 >>> Control: tag -1 not-a-bug >>>=20 >>> Am 10.01.2017 um 22:15 schrieb Ted Toal: >>>> Package: NXAGENT >>>> Version: 3.5.0 >>>>=20 >>>> My .bash_profile defines Perl environment variables for Active = Perl, and adds the Active Perl bin directory to the start of the path. = This causes an x2go session to fail with the message: >>>> Connection failed. /usr/bin/perl: symbol lookup error: = /share/carvajal-archive/PACKAGES/local/ActivePerl-5.24/lib/auto/Sys/Hostna= me/Hostname.so: undefined symbol: Perl_xs_handshake >>>> NXAGENT is user /usr/bin/perl and ignoring the Perl bin directory = at the start of the path, but it is nevertheless using the Perl = environment variables and so is looking in the wrong place for the Perl = library. >>>=20 >>> I'd say this isn't a bug, but actually expected behavior. >>> If you need different values for variables depending on which = software >>> you run, you either need to prefix them manually each time you call = that >>> software, or write a wrapper script, or use if/then clauses in your >>> .bash_profile. The latter is what you seem to have decided to do, = and >>> ran into problems with, judging from your bug report #1134, thus = closing >>> this one. >>>=20 >>> -Stefan >>>=20 >>>=20 >>> --=20 >>> BAUR-ITCS UG (haftungsbeschr=C3=A4nkt) >>> Gesch=C3=A4ftsf=C3=BChrer: Stefan Baur >>> Eichen=C3=A4ckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 >>> Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 >>>=20 >>=20 >=20 >=20 > --=20 > BAUR-ITCS UG (haftungsbeschr=C3=A4nkt) > Gesch=C3=A4ftsf=C3=BChrer: Stefan Baur > Eichen=C3=A4ckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 > Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 >=20 > _______________________________________________ > x2go-dev mailing list > x2go-dev@lists.x2go.org > http://lists.x2go.org/listinfo/x2go-dev