Update content for md

52 files changed, 56 insertions, 56 deletions

diff --git a/gemfeed/2008-06-26-perl-poetry.md b/gemfeed/2008-06-26-perl-poetry.md
index 3f55b5e8..a74ab42f 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)  
 
-E-Mail your comments to hi@paul.cyou :-)
+E-Mail your comments to hi@foo.zone :-)
 
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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 e6e91d2f..fc0e00be 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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+E-Mail your comments to hi@foo.zone :-)
 
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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 f92e6b89..664d0535 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 bd9bd1bd..7641f264 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 a48955a7..1abec135 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 a1dfa796..6f44db77 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 40e1c589..c89cebd3 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 e206d594..b8c15482 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 3adc1ae4..3676dddc 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 17ae757c..580fcc44 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 48c4b1d7..30b6b669 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 aeebf613..2f111c50 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 904631bd..c402639e 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 b5e64b91..09b91f87 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 f5d01bb9..e1fe403a 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 51559621..f7502504 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@paul.cyou :-)
+E-Mail your comments to hi@foo.zone :-)
 
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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 8828c1d8..318bcd11 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@paul.cyou :-)
+E-Mail your comments to hi@foo.zone :-)
 
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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 40dfb4a3..c9eb3968 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 3d4135c6..7ec7e856 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 c03f09bb..85211285 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 2db77c58..0fb72018 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 f4c1dfff..1b4d7589 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 4fcd0875..b3781f15 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@paul.cyou :-)
+E-Mail your comments to hi@foo.zone :-)
 
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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 42b7ea59..20238a54 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 c95fad5f..37f08c59 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@paul.cyou :-)
+E-Mail your comments to hi@foo.zone :-)
 
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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 f367298d..ace8f413 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 ecee2800..0821e96a 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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+E-Mail your comments to hi@foo.zone :-)
 
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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 c60a9c81..2c4d4c6a 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 b04e3574..53aeed0d 100644
--- a/gemfeed/2022-04-10-creative-universe.md
+++ b/gemfeed/2022-04-10-creative-universe.md
@@ -137,6 +137,6 @@ Relevant books I can recommend are:
 * The Off Switch; Mark Cropley; Virgin Books
 * Ultralearning; Scott Young; Thorsons
 
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diff --git a/gemfeed/2022-05-27-perl-is-still-a-great-choice.md b/gemfeed/2022-05-27-perl-is-still-a-great-choice.md
index 27a1126d..dd2fdee3 100644
--- a/gemfeed/2022-05-27-perl-is-still-a-great-choice.md
+++ b/