Update content for md

54 files changed, 55 insertions, 55 deletions

diff --git a/gemfeed/2008-06-26-perl-poetry.md b/gemfeed/2008-06-26-perl-poetry.md
index a74ab42f..8a591eeb 100644
--- a/gemfeed/2008-06-26-perl-poetry.md
+++ b/gemfeed/2008-06-26-perl-poetry.md
@@ -167,6 +167,6 @@ Other related posts are:
 [2011-05-07 Perl Daemon (Service Framework)](./2011-05-07-perl-daemon-service-framework.md)  
 [2008-06-26 Perl Poetry (You are currently reading this)](./2008-06-26-perl-poetry.md)  
 
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+E-Mail your comments to paul at buetow.org :-)
 
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diff --git a/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.md b/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.md
index fc0e00be..606a2739 100644
--- a/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.md
+++ b/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.md
@@ -36,6 +36,6 @@ It was a pain in the ass. My next mobile phone MUST have a full QWERTY keyboard.
 
 At the moment I am in Sofia, Bulgaria. Here I can use at least an unprotected WLAN hotspot which belongs to one of the neighbours which I don’t know in person, and it is not blocking any port at all :)
 
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diff --git a/gemfeed/2010-04-09-standard-ml-and-haskell.md b/gemfeed/2010-04-09-standard-ml-and-haskell.md
index 664d0535..4e6f8146 100644
--- a/gemfeed/2010-04-09-standard-ml-and-haskell.md
+++ b/gemfeed/2010-04-09-standard-ml-and-haskell.md
@@ -169,6 +169,6 @@ fun my_filter f l = foldr (make_filter_fn f) [] l
 my_filter f l = foldr (make_filter_fn f) [] l
 ```
 
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diff --git a/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.md b/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.md
index 7641f264..24f68d6b 100644
--- a/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.md
+++ b/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.md
@@ -97,6 +97,6 @@ first 10 nat_pairs_not_null
 
 [http://www.haskell.org/](http://www.haskell.org/)  
 
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diff --git a/gemfeed/2010-05-09-the-fype-programming-language.md b/gemfeed/2010-05-09-the-fype-programming-language.md
index 1abec135..19831f5c 100644
--- a/gemfeed/2010-05-09-the-fype-programming-language.md
+++ b/gemfeed/2010-05-09-the-fype-programming-language.md
@@ -505,6 +505,6 @@ You can find all of this on the GitHub page. There is also an "examples" folders
 
 [https://codeberg.org/snonux/fype](https://codeberg.org/snonux/fype)  
 
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diff --git a/gemfeed/2011-05-07-perl-daemon-service-framework.md b/gemfeed/2011-05-07-perl-daemon-service-framework.md
index 6f44db77..65377307 100644
--- a/gemfeed/2011-05-07-perl-daemon-service-framework.md
+++ b/gemfeed/2011-05-07-perl-daemon-service-framework.md
@@ -164,6 +164,6 @@ Other related posts are:
 [2011-05-07 Perl Daemon (Service Framework) (You are currently reading this)](./2011-05-07-perl-daemon-service-framework.md)  
 [2008-06-26 Perl Poetry](./2008-06-26-perl-poetry.md)  
 
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diff --git a/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.md b/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.md
index c89cebd3..2492b536 100644
--- a/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.md
+++ b/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.md
@@ -138,6 +138,6 @@ fib(10) = 55
 
 It's entertaining to play with :-).
 
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diff --git a/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.md b/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.md
index b8c15482..9c0ac43e 100644
--- a/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.md
+++ b/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.md
@@ -175,6 +175,6 @@ exit
 
 Reboot & test!  Enjoy!
 
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diff --git a/gemfeed/2016-04-03-offsite-backup-with-zfs.md b/gemfeed/2016-04-03-offsite-backup-with-zfs.md
index 3676dddc..44e8496e 100644
--- a/gemfeed/2016-04-03-offsite-backup-with-zfs.md
+++ b/gemfeed/2016-04-03-offsite-backup-with-zfs.md
@@ -40,6 +40,6 @@ The solution is adding another USB drive (2TB) with an encryption container (GEL
 
 I am thinking of buying a second 2TB USB drive and setting it up the same way as the first one. So I could alternate the backups. One drive would be at the secret location, and the other drive would be at home. And these drives would swap place after each cycle. This would give some security about the failure of that drive, and I would have to go to the secret location only once (swapping the drives) instead of twice (picking that drive up to update the data + bringing it back to the remote location).
 
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diff --git a/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.md b/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.md
index 580fcc44..fa915383 100644
--- a/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.md
+++ b/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.md
@@ -385,6 +385,6 @@ Of course I am operating multiple Jails on the same host this way with Puppet:
 
 All done in a pretty automated manor. 
 
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diff --git a/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.md b/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.md
index 30b6b669..8aa7e6fc 100644
--- a/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.md
+++ b/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.md
@@ -26,6 +26,6 @@ Whenever I update the offsite backup, I am doing it to the drive, which is kept
 
 Furthermore, I added scrubbing ("zpool scrub...") to the script. It ensures that the file system is consistent and that there are no bad blocks on the disk and the file system. To increase the reliability, I also run a "zfs set copies=2 zroot". That setting is also synchronized to the offsite ZFS pool. ZFS stores every data block to disk twice now. Yes, it consumes twice as much disk space, making it better fault-tolerant against hardware errors (e.g. only individual disk sectors going bad). 
 
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diff --git a/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.md b/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.md
index 2f111c50..62db4031 100644
--- a/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.md
+++ b/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.md
@@ -234,6 +234,6 @@ Whenever I have to change a DNS entry, all I have to do is:
 
 That's much more comfortable now than manually clicking at some web UIs at Schlund Technologies.
 
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diff --git a/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.md b/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.md
index c402639e..f7421b76 100644
--- a/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.md
+++ b/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.md
@@ -98,6 +98,6 @@ Big C software projects, like Linux, also follow some OOP techniques:
 
 C is a very old programming language with it's quirks. This might be one of the reasons why Linux will also let Rust code in.
 
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diff --git a/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.md b/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.md
index 09b91f87..99c0414d 100644
--- a/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.md
+++ b/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.md
@@ -186,6 +186,6 @@ For example, the open syscall opens a file and returns the responsible file desc
 [Graphite](https://graphiteapp.org)  
 [Memory mapped I/O](https://en.wikipedia.org/wiki/Memory-mapped_I/O)  
 
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diff --git a/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.md b/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.md
index e1fe403a..695311e9 100644
--- a/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.md
+++ b/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.md
@@ -109,6 +109,6 @@ Other related posts are:
 [2022-03-06 The release of DTail 4.0.0](./2022-03-06-the-release-of-dtail-4.0.0.md)  
 [2021-04-22 DTail - The distributed log tail program (You are currently reading this)](./2021-04-22-dtail-the-distributed-log-tail-program.md)  
 
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diff --git a/gemfeed/2021-04-24-welcome-to-the-geminispace.md b/gemfeed/2021-04-24-welcome-to-the-geminispace.md
index f7502504..19451d91 100644
--- a/gemfeed/2021-04-24-welcome-to-the-geminispace.md
+++ b/gemfeed/2021-04-24-welcome-to-the-geminispace.md
@@ -85,6 +85,6 @@ Other related posts are:
 [2021-06-05 Gemtexter - One Bash script to rule it all](./2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md)  
 [2021-04-24 Welcome to the Geminispace (You are currently reading this)](./2021-04-24-welcome-to-the-geminispace.md)  
 
-E-Mail your comments to hi@foo.zone :-)
+E-Mail your comments to paul at buetow.org :-)
 
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diff --git a/gemfeed/2021-05-16-personal-bash-coding-style-guide.md b/gemfeed/2021-05-16-personal-bash-coding-style-guide.md
index 318bcd11..4748979c 100644
--- a/gemfeed/2021-05-16-personal-bash-coding-style-guide.md
+++ b/gemfeed/2021-05-16-personal-bash-coding-style-guide.md
@@ -387,6 +387,6 @@ Other related posts are:
 [2021-06-05 Gemtexter - One Bash script to rule it all](./2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md)  
 [2021-05-16 Personal Bash coding style guide (You are currently reading this)](./2021-05-16-personal-bash-coding-style-guide.md)  
 
-E-Mail your comments to hi@foo.zone :-)
+E-Mail your comments to paul at buetow.org :-)
 
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diff --git a/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md b/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md
index c9eb3968..d76b4a4e 100644
--- a/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md
+++ b/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md
@@ -173,6 +173,6 @@ Other related posts are:
 [2021-05-16 Personal Bash coding style guide](./2021-05-16-personal-bash-coding-style-guide.md)  
 [2021-04-24 Welcome to the Geminispace](./2021-04-24-welcome-to-the-geminispace.md)  
 
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diff --git a/gemfeed/2021-07-04-the-well-grounded-rubyist.md b/gemfeed/2021-07-04-the-well-grounded-rubyist.md
index 7ec7e856..7c1cf8a8 100644
--- a/gemfeed/2021-07-04-the-well-grounded-rubyist.md
+++ b/gemfeed/2021-07-04-the-well-grounded-rubyist.md
@@ -102,6 +102,6 @@ I liked this book so much so that I even bought myself a (used) paper copy of it
 
 Will I abandon my beloved Perl? Probably not. There are also some Perl scripts I use at work. But unfortunately I only have a limited amount of time and I have to use it wisely. I might look into Raku (formerly known as Perl 6) next year and use it for a personal pet project, who knows. :-). I also highly recommend reading the two Perl books "Modern Perl" and "Higher-Order Perl".
 
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diff --git a/gemfeed/2021-08-01-on-being-pedantic-about-open-source.md b/gemfeed/2021-08-01-on-being-pedantic-about-open-source.md
index 85211285..89914c64 100644
--- a/gemfeed/2021-08-01-on-being-pedantic-about-open-source.md
+++ b/gemfeed/2021-08-01-on-being-pedantic-about-open-source.md
@@ -58,7 +58,7 @@ Security bugs in open-source projects are exposed to the public and fixed quickl
 
 Do you need Microsoft Word? Why don't you just use the Vim text editor or GNU Emacs to write your letters? If that's too nerdy, you can still use open-source alternatives such as AbiWord or LibreOffice. Larger organizations have the tendency to standardize the software their employees have to use. Unfortunately, as Microsoft Word is the de-facto standard text processing program, most companies prefer Word over LibreOffice. Same with Microsoft Excel vs LibreOffice Calc or other spreadsheet alternatives like Gnumeric. I don't know why that is; please....
 
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 I only use free and open-source operating systems on my personal Laptops, Desktop PCs and servers (FreeBSD and Linux based ones). Most of the programs and apps I use on them are free and open-source as well, and I am comfortable with it for over twenty years. Exceptions are the BIOSes and some firmwares of my devices. I also use Skype as most of my friends and family are using it. They are, unfortunately, proprietary software still. But I will be looking into Matrix as a Skype alternative when I have time. There are also open BIOS alternatives, but they usually don't work on my devices.
 
@@ -114,6 +114,6 @@ Should you be pedantic about open-source software? It depends. It depends on you
 
 You have better chances when you know how to manage your own server and install and manage alternatives to the big cloud providers by yourself. I have the advantage that I have work experience as a Linux Systems Administrator here. I mentioned NextCloud already. I use NextCloud for online photo and file storage, contact and calendar sync and as an RSS news feed server. You could do the same with your own E-Mail server, you can also host your own website and blog. I also mentioned Matrix as a Skype alternative (which could also be an alternative to WhatsApp, Skype, Telegram, Viber, ...). I don't know a lot about Matrix yet, but it seems to be a very neat alternative. I am ready to invest time in it as one of my future personal pet projects. Not only because I think it's better, but also because for fun and as a hobby. But this doesn't mean that I invest *all* of my personal free time in it.
 
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diff --git a/gemfeed/2021-09-12-keep-it-simple-and-stupid.md b/gemfeed/2021-09-12-keep-it-simple-and-stupid.md
index 0fb72018..d2bea91c 100644
--- a/gemfeed/2021-09-12-keep-it-simple-and-stupid.md
+++ b/gemfeed/2021-09-12-keep-it-simple-and-stupid.md
@@ -94,7 +94,7 @@ There is, however, a trap. The more you spend time with things, the more these t
 
 Enough ranted for now!
 
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 > Controversially, a lack of features is a feature. Enjoy your peace an quiet. - Michael W Lucas 
 
diff --git a/gemfeed/2021-10-22-defensive-devops.md b/gemfeed/2021-10-22-defensive-devops.md
index 1b4d7589..87bbeb37 100644
--- a/gemfeed/2021-10-22-defensive-devops.md
+++ b/gemfeed/2021-10-22-defensive-devops.md
@@ -99,6 +99,6 @@ For every major incident, you need to follow up with an incident retrospective.
 
 This usually means creating one or more tickets, which will be dealt with soon. Once the permanent fix is deployed, you can remove your ad-hoc automation and monitoring around it and focus on your regular work again.
 
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diff --git a/gemfeed/2021-11-29-bash-golf-part-1.md b/gemfeed/2021-11-29-bash-golf-part-1.md
index b3781f15..ba4bb04a 100644
--- a/gemfeed/2021-11-29-bash-golf-part-1.md
+++ b/gemfeed/2021-11-29-bash-golf-part-1.md
@@ -470,6 +470,6 @@ Other related posts are:
 [2021-06-05 Gemtexter - One Bash script to rule it all](./2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md)  
 [2021-05-16 Personal Bash coding style guide](./2021-05-16-personal-bash-coding-style-guide.md)  
 
-E-Mail your comments to hi@foo.zone :-)
+E-Mail your comments to paul at buetow.org :-)
 
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diff --git a/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.md b/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.md
index 20238a54..c1626ddc 100644
--- a/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.md
+++ b/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.md
@@ -123,6 +123,6 @@ Another blog post worth reading:
 
 [https://unixsheikh.com/articles/how-to-stay-sane-in-todays-world-of-tech.html](https://unixsheikh.com/articles/how-to-stay-sane-in-todays-world-of-tech.html)  
 
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diff --git a/gemfeed/2022-01-01-bash-golf-part-2.md b/gemfeed/2022-01-01-bash-golf-part-2.md
index 37f08c59..79489d86 100644
--- a/gemfeed/2022-01-01-bash-golf-part-2.md
+++ b/gemfeed/2022-01-01-bash-golf-part-2.md
@@ -487,6 +487,6 @@ Other related posts are:
 [2021-06-05 Gemtexter - One Bash script to rule it all](./2021-06-05-gemtexter-one-bash-script-to-rule-it-all.md)  
 [2021-05-16 Personal Bash coding style guide](./2021-05-16-personal-bash-coding-style-guide.md)  
 
-E-Mail your comments to hi@foo.zone :-)
+E-Mail your comments to paul at buetow.org :-)
 
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diff --git a/gemfeed/2022-01-23-welcome-to-the-foo.zone.md b/gemfeed/2022-01-23-welcome-to-the-foo.zone.md
index ace8f413..ec0a3ce6 100644
--- a/gemfeed/2022-01-23-welcome-to-the-foo.zone.md
+++ b/gemfeed/2022-01-23-welcome-to-the-foo.zone.md
@@ -44,6 +44,6 @@ As a funny bit, I almost chose "foo.surf" over "foo.zone" as in "surfing this si
 
 The host buetow.org will stay. However, not as the primary address for this site. I will keep using it for my personal internet infrastructure as well as for most of my E-Mail addresses. I used buetow.org for that over the past 10 years already anyway and that won't change any time soon. I don't know what I am going to do with snonux.de in the long run. A .de SLD (for Germany) is pretty cheap, so I might just keep it for now. 
 
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diff --git a/gemfeed/2022-02-04-computer-operating-systems-i-use.md b/gemfeed/2022-02-04-computer-operating-systems-i-use.md
index 0821e96a..7f5ceed4 100644
--- a/gemfeed/2022-02-04-computer-operating-systems-i-use.md
+++ b/gemfeed/2022-02-04-computer-operating-systems-i-use.md
@@ -225,6 +225,6 @@ I have been using NetBSD on an old Sun Sparcstation 10 as a student. I also have
 [DragonFly BSD - Fork of FreeBSD 4](https://www.dragonflybsd.org/)  
 [Phosh (on postmarketOS) - A true Linux shell for the smartphone](http://wiki.postmarketos.org/wiki/Phosh)  
 
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diff --git a/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.md b/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.md
index 2c4d4c6a..f4238f72 100644
--- a/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.md
+++ b/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.md
@@ -296,6 +296,6 @@ Thanks!
 
 Paul
 
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diff --git a/gemfeed/2022-04-10-creative-universe.md b/gemfeed/2022-04-10-creative-universe.md
index 53aeed0d..de313d18 100644
--- a/gemfeed/2022-04-10-creative-universe.md
+++ b/gemfeed/2022-0