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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘openSuSE’ Category

Testing SMTP from the console on Linux, BSD and Mac OS: swaks and smtp-cli Perl script clients

Posted by jpluimers on 2019/01/03

Testing SMTP using telnet is tedious as you have to remember the commands and responses in the SMTP protocol. It gets even harder when doing SMTP AUTH, as then you have to base encode a bunch of strings [WayBackHow to Test SMTP AUTH using Telnet [Wiki] | NDCHost

Luckily there is a Perl script swaks: [WayBackSwaks – Swiss Army Knife for SMTP which does ESMTP and LMTP as well as TLS.

The funny thing is that the repository at jetmore/swaks: Swaks – Swiss Army Knife for SMTP only has the readme, but the not the script which you can get from [WayBack]

Despite that, most Linux distributions have an installation package.

[WayBackswaks for OpenSuse is in the [WayBacknetwork repository, so for Tumbleweed (actually: Factory) on Raspberry Pi you need to perform this:

zypper addrepo
zypper refresh
zypper install swaks

On Mac OS X it is even easier: if you have the homebrew package manager installed, you just install the [WayBackswaks formula using the [WayBack] swaks.rb script:

brew install swaks

Note there is also the smtp-cli Perl script which I mentioned before at Fake/Mock SMTP servers and services for use during development, which also does TLS, but few environments have ready built packages for them. If you still want to try it out:


swaks -tls --to --from --server --auth-user username

Which prompts for the password, then outputs like this:

=== Trying
=== Connected to
<- 220 ESMTP ESMTP server ready -> EHLO rmbpro1tbjwp
<- hello [], pleased to meet you
<-  250-HELP
<-  250-SIZE 157286400
<-  250-8BITMIME
<-  250-STARTTLS
<- 250 OK -> STARTTLS
<- 220 Ready to start TLS === TLS started with cipher TLSv1:DHE-RSA-AES256-SHA:256 === TLS no local certificate set === TLS peer DN="/OU=Domain Control Validated/OU=PositiveSSL Wildcard/CN=*" ~> EHLO rmbpro1tbjwp
<~ hello [], pleased to meet you
<~  250-HELP
<~  250-SIZE 157286400
<~  250-8BITMIME
<~ 250 OK ~> AUTH LOGIN
<~ 334 ############ ~> anA=
<~ 334 ############ ~> ############################
<~ 235 ... authentication succeeded ~> MAIL FROM:<>
<~  250 <> sender ok
 ~> RCPT TO:<>
<~  250 <> recipient ok
 ~> DATA
<~ 354 enter mail, end with "." on a line by itself ~> Date: Wed, 19 Jul 2017 09:09:57 +0200
 ~> To:
 ~> From:
 ~> Subject: test Wed, 19 Jul 2017 09:09:57 +0200
 ~> Message-Id: <20170719090957.052207@rmbpro1tbjwp>
 ~> X-Mailer: swaks v20170101.0
 ~> This is a test mailing
 ~> .
<~ 250 accepted mail mXA71v00C4jr6ac01XA9Bo for delivery ~> QUIT
<~  221 ESMTP closing connection
=== Connection closed with remote host.


Posted in *nix, *nix-tools, Communications Development, Development, Hardware Development, Internet protocol suite, Linux, openSuSE, Power User, Raspberry Pi, SMTP, SuSE Linux, Tumbleweed | Leave a Comment »

Easy Running of Scripts at Boot and Shutdown – SUSE Blog | SUSE Communities

Posted by jpluimers on 2019/01/01




Posted in *nix, *nix-tools, bash, Development, Linux, openSuSE, Power User, Scripting, Software Development, SuSE Linux, Tumbleweed | Leave a Comment »

zypper history notes/links

Posted by jpluimers on 2018/12/31

For my archive:

cut -d "|" -f 1-4 -s --output-delimiter " | " /var/log/zypp/history | grep -v " radd "

For comparisons with other package managers, see: [WayBackLinux Package Managers – Kyle’s Wiki


Posted in *nix, Debian, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed, Ubuntu | Leave a Comment »

Reptyr – Forgot to “screen” your ssh session first, and now that long running…

Posted by jpluimers on 2018/12/24

From a while back, but still so cool! It allows you to “recover” the terminal (stdin/stdout/stderr) of a process that was attached to a terminal or ssh session.

Reptyr – Forgot to “screen” your ssh session first, and now that long running thing is stuck?

»reptyr PID will grab the process with id PID and attach it to your current terminal.«

server:~ # zypper install reptyr
Retrieving: reptyr-0.3dev_git20120325-7.1.2.x86_64.rpm ...................[done]
(1/1) Installing: reptyr-0.3dev_git20120325-7.1.2 ........................[done]
server:~ # rpm -qi reptyr
Summary     : A tool for "re-ptying" programs
Description :
reptyr is a utility for taking an existing running program and
attaching it to a new terminal. Started a long-running process over
ssh, but have to leave and don't want to interrupt it? Just start a
screen, use reptyr to grab it, and then kill the ssh session and head
on home.
Distribution: openSUSE 13.1

Source: [WayBack] Reptyr – Forgot to “screen” your ssh session first, and now that long running thing is stuck?… – Kristian Köhntopp – Google+

It works with tmux too and is supported on many Linux distributions, see for instance [WayBackReptyr – Move A Running Process From One Terminal To Another Without Closing It – OSTechNix.

You can even redirect a pty for gdb usage: [WayBackreptyr(1): new terminal – Linux man page

StackExchange thread: [WayBack] How to recover a shell after a disconnection with these entries:

Originally from 2011 [WayBackreptyr: Attach a running process to a new terminal – Made of Bugs it is still maintained:

GitHub repository [WayBacknelhage/reptyr: Reparent a running program to a new terminal


Posted in *nix, *nix-tools, Linux, openSuSE, Power User, screen, SuSE Linux, tmux | Leave a Comment »

Links for Nagios openSuSE Tumbleweed monitoring (including Android devices)

Posted by jpluimers on 2018/12/13

For my link archive:

Non-stable repos:


Posted in *nix, Linux, Monitoring, Nagios, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »

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