replace last_modified_date to last_modified_at

following a "standard" variable name instead of a custom one i took off
of another blog

_layouts/post.html

@@ -5,7 +5,7 @@ custom_nav: true
 <link rel="alternate" type="application/rss+xml" href="{{ '/feeds/posts.xml' | relative_url }}" />
 <div class="container" id="metadata">
         <h2 itemprop="title">{{ page.title }}</h2>
-        <span itemprop="date"><time datetime="{{ page.date | date_to_xmlschema | strip_html }}">{{ page.date | date_to_xmlschema | strip_html }}</time> {% if page.last_modified_date %}(last updated <time datetime="{{ page.last_modified_date | date_to_xmlschema | strip_html }}">{{ page.last_modified_date | date_to_xmlschema | strip_html }}</time>){% endif %}</span> - Written by {% unless page.author contains "<a href='/unknown-author'>Unknown Author</a>" %}@{% endunless %}{{ page.author }}
+        <span itemprop="date"><time datetime="{{ page.date | date_to_xmlschema | strip_html }}">{{ page.date | date_to_xmlschema | strip_html }}</time> {% if page.last_modified_at %}(last updated <time datetime="{{ page.last_modified_at | date_to_xmlschema | strip_html }}">{{ page.last_modified_at | date_to_xmlschema | strip_html }}</time>){% endif %}</span> - Written by {% unless page.author contains "<a href='/unknown-author'>Unknown Author</a>" %}@{% endunless %}{{ page.author }}
         <br>
         {% capture time %}{{ content | reading_time }}{% endcapture %}
         Reading time (270 wpm): {{ time }} {% if time == '1' %}minute{% else %}minutes{% endif %}

_maintenance/2021-12-15-temporary-downtime-on-server.md

@@ -5,7 +5,7 @@ author: JacksonChen666
 categories:
 - downtime
 date: 2021-12-15 17:54 +0000
-last_modified_date: 2021-12-17 15:37:08 +0100
+last_modified_at: 2021-12-17 15:37:08 +0100
 ---
 edit: no more downtime. also, i won't be editing posts like this when it's done.
 If you have been redirected here when trying to access any of my services, they are down right now and it is planned to be down for a bit while (give or take 1 hour, no guarantees).

_maintenance/2022-02-01-power-outage.md

@@ -3,7 +3,7 @@ layout: post
 title: Power outage cutting off all services until further notice
 author: JacksonChen666
 date: 2022-02-01 06:31:36 +0100
-last_modified_date: 2022-02-01 06:54:14 +0100
+last_modified_at: 2022-02-01 06:54:14 +0100
 ---
 lucky to have internet here, because the power went out at around 05:30+0100 and it's actually hard to get access to the internet because of the power outage.
 

_maintenance/2022-04-04-storage-upgrade-ssd.md

@@ -5,7 +5,7 @@ categories: [server]
 tags: [upgrade]
 author: JacksonChen666
 date: 2022-04-04 19:50:44 +0200
-last_modified_date: 2022-04-09T23:35:40+02:00
+last_modified_at: 2022-04-09T23:35:40+02:00
 pinned: false
 ---
 so, i bought a ssd.

_maintenance/2022-04-14-major-system-upgrade.md

@@ -5,7 +5,7 @@ categories: [server]
 tags: [upgrade]
 author: JacksonChen666
 date: 2022-04-14T18:02:20+02:00
-last_modified_date: 2022-05-10T18:38:00+02:00
+last_modified_at: 2022-05-10T18:38:00+02:00
 ---
 oh hey hi, i kinda [recently upgraded the server (hardware)](/maintenance/2022-04-04/17-50-44/) <!-- Warning: Breakable link! --> and wasn't really aware that [fedora is having another release soon](https://web.archive.org/web/20220414142141/https://alt.fedoraproject.org/prerelease/index.html) [according to their schedule][schedule] (see "Current Final Target Date" or actually, "Final Target date #1" which is what Fedora users are supposed to plan on) so time for more planning!
 

_maintenance/2022-05-09-network-upgrade.md

@@ -5,7 +5,7 @@ category: [server, network]
 tags: [hardware, upgrade]
 author: JacksonChen666
 date: 2022-05-09T19:16:33+02:00
-last_modified_date: 2022-05-11T18:38:45+02:00
+last_modified_at: 2022-05-11T18:38:45+02:00
 ---
 oh hey hi again, i'm just here to say downtime is going to happen again, except this time it's another hardware upgrade and it's the router.
 

_maintenance/2022-05-11-cannot-get-server-working.md

@@ -4,7 +4,7 @@ title: cannot get server working
 author: JacksonChen666
 category: [server]
 date: 2022-05-11T18:40:54+02:00
-last_modified_date: 2022-05-12T08:53:36+02:00
+last_modified_at: 2022-05-12T08:53:36+02:00
 pinned: true
 ---
 not again, server is down because of the new router.

_posts/2021-03-25-facing-developer-issues.md

 ---
 title: Facing developer issues
 date: '2021-03-25 22:17:00 +0100'
-last_modified_date: 2021-08-11 20:21:38 +0200
+last_modified_at: 2021-08-11 20:21:38 +0200
 categories: [random]
 author: JacksonChen666
 ---

_posts/2021-03-26-jekyll-and-github-pages.md

 ---
 title: Jekyll and GitHub Pages
 date: '2021-03-26 13:36:58 +0100'
-last_modified_date: 2021-08-11 20:21:24 +0200
+last_modified_at: 2021-08-11 20:21:24 +0200
 categories: [random]
 author: JacksonChen666
 ---

_posts/2021-03-28-basically-functions-in-jekyll.md

 ---
 title: Basically functions in Jekyll
 date: '2021-03-28 15:26:45 +0200'
-last_modified_date: 2021-08-11 20:22:04 +0200
+last_modified_at: 2021-08-11 20:22:04 +0200
 categories: [jekyll]
 tags: [jekyll]
 author: JacksonChen666

_posts/2021-04-03-making-and-building-custom-arch-linux-isos.md

 ---
 title: Making and Building Custom Arch Linux ISOs
 date: '2021-04-03 14:41:12 +0200'
-last_modified_date: 2021-08-11 20:25:39 +0200
+last_modified_at: 2021-08-11 20:25:39 +0200
 categories: [arch linux]
 tags: [making isos]
 author: JacksonChen666

_posts/2021-04-20-how-to-get-out-of-vim-(and-the-basics-of-vim).md

 ---
 title: How to get out of Vim (and the basics of Vim)
 date: '2021-04-20 15:42:29 +0200'
-last_modified_date: '2021-08-11 20:22:27 +0200'
+last_modified_at: '2021-08-11 20:22:27 +0200'
 categories: [vim]
 author: JacksonChen666
 --- 

_posts/2021-05-19-unknown-author.md

@@ -3,7 +3,7 @@ title: Unknown Author
 permalink: /unknown-author/
 author: <a href='/unknown-author'>Unknown Author</a> (actually @JacksonChen666)
 date: '2021-05-19 17:44:29 +0200'
-last_modified_date: '2021-08-11 20:22:47 +0200'
+last_modified_at: '2021-08-11 20:22:47 +0200'
 categories: [website]
 ---
 ## But who is unknown author??

_posts/2021-06-01-behind-the-scenes-of-the-fastest-arch-linux-speedrun-of-my-life.md

@@ -4,7 +4,7 @@ author: JacksonChen666
 categories: arch linux
 tags: behind the scenes
 date: 2021-06-01 20:51 +0200
-last_modified_date: 2021-07-11 00:02:39 +0200
+last_modified_at: 2021-07-11 00:02:39 +0200
 ---
 OK so, 55.6 seconds. And all you did is nothing during the install. HOW?
 

_posts/2021-06-06-life-advice-to-reduce-potentially-wasted-time-barely-care-about-spam.md

@@ -2,7 +2,7 @@
 title: 'Life Advice to Reduce Potentially Wasted Time: Barely Care About Spam'
 author: JacksonChen666
 date: 2021-06-06 13:11 +0200
-last_modified_date: 2021-08-11 20:24:04 +0200
+last_modified_at: 2021-08-11 20:24:04 +0200
 categories: [website]
 tags: [submissions, spam]
 ---

_posts/2021-06-17-your-mac-has-the-ability-to-create-wired-network-for-your-iphone.md

@@ -2,7 +2,7 @@
 title: Your Mac has the ability to create wired network for your iPhone
 author: JacksonChen666
 date: 2021-06-17 20:19 +0200
-last_modified_date: 2021-08-11 19:47:30 +0200
+last_modified_at: 2021-08-11 19:47:30 +0200
 categories: [networking]
 tags: [apple]
 ---

_posts/2021-07-10-github-gitlab-and-the-future-of-everything-i-made.md

@@ -2,7 +2,7 @@
 title: GitHub, GitLab, and the future of everything I make
 author: JacksonChen666
 date: 2021-07-10 17:13 +0200
-last_modified_date: 2021-10-10 21:12:39 +0200
+last_modified_at: 2021-10-10 21:12:39 +0200
 tags: [github, gitlab]
 ---
 I'm moving to GitLab with only the active projects I still do.

_posts/2021-07-23-list-of-posts-comments-and-things-where-jacksonchen666-does-stupidity.md

@@ -4,7 +4,7 @@ title: List of Posts, Comments, and Things where JacksonChen666 does Stupidity
 author: JacksonChen666
 permalink: /stupids/
 date: 2021-07-23 03:25 +0200
-last_modified_date: 2021-07-24 18:26:25 +0200
+last_modified_at: 2021-07-24 18:26:25 +0200
 ---
 Welcome to a post on my website.
 You probably got linked here, and I'll explain why this even exists.

_posts/2021-08-19-vanity-onion-address-shenanigans.md

@@ -4,7 +4,7 @@ categories: [tor]
 tags: [onion address]
 date: 2021-08-19 00:30:15 +0200
 author: JacksonChen666
-last_modified_date: 2022-03-23 21:55:18 +0100
+last_modified_at: 2022-03-23 21:55:18 +0100
 ---
 Well, [Tor][tor] is a thing, and I have to say: yeah it seems pretty cool but probably not gonna daily drive that.
 But with Tor, does it have [onion services][onion services], which is hidden ~~from any of the public prying eyes.

_posts/2021-09-24-the-covid-19-and-online-learning-wild-frolicking-adventures-of-interconnected-information-world.md

@@ -6,7 +6,7 @@ tags:
 - google trends
 categories: [wild frolicking adventures of interconnected information world]
 date: 2021-09-24 22:23 +0000
-last_modified_date: 2021-10-10 21:15:12 +0200
+last_modified_at: 2021-10-10 21:15:12 +0200
 ---
 Welcome to a potential series of: Wild [Frolicking](https://en.wiktionary.org/wiki/frolic#Verb) Adventures of Interconnected Information World, where I explore the internet to show you maybe interesting things.
 The title was inspired by bill wurtz video called [Wild Frolicking Adventures of Informational Education](https://youtu.be/1PDQ22sePmU), in which he rambles with stuff related in anything on a map.