added timestamp modification to knowledge base

.gitea/workflows/hugo-deploy.yaml

@@ -26,11 +26,8 @@ jobs:
         apt-get install -y hugo
 
     - name: Build Hugo Site
-      run: hugo --minify --config hugo.toml
+      run: hugo --minify --config hugo.toml -d /output
+
+    - name: Deploy Hugo Site
+      run: docker cp /output/. gitea-runner:/output
 
-    - name: Deploy to Hugo Container
-      run: |
-        rsync -avz --delete public/ /mnt/hugo/
-      env:
-        HUGO_CONTAINER_PATH: /mnt/hugo/
-        GITEA_RUNNER_MOUNT_PATH: ./hugo/public:/mnt/hugo

archetypes/default.md

@@ -2,4 +2,5 @@
 date = '{{ .Date }}'
 draft = true
 title = '{{ replace .File.ContentBaseName "-" " " | title }}'
+type='post'
 +++

content/knowledge-base/URLs-in-latex-with-proper-linebreaks.md

@@ -0,0 +1,13 @@
++++
+date = '2023-02-01T15:31:59'
+draft = false
+title = 'URLs in Latex With Proper Linebreaks'
+type = 'post'
+tags = ['LaTeX']
++++
+
+## Problem
+While the [hyperref](https://www.ctan.org/pkg/hyperref) package provides the `\\url{}` command it doesn't handle line breaks well.
+
+## Solution
+Use the package [xurl](https://www.ctan.org/pkg/xurl).

content/knowledge-base/automatic-updates.md

@@ -0,0 +1,23 @@
++++
+date = '2022-09-04T15:40:21'
+draft = false
+title = 'Automatic Updates'
+type = 'post'
+tags = ['Linux', 'Debian']
++++
+Installing security updates is very important. Especially on a server that is not accessed on a daily basis.
+This tutorial covers the basics for setting up unattended-upgrades on any Debian-based Linux distribution.
+## Update the system
+```
+sudo apt update && sudo apt upgrade
+```
+## Install unattended-upgrades
+```
+apt install unattended-upgrades
+```
+```
+dpkg-reconfigure unattended-upgrades
+```
+
+## Further Information
+<https://wiki.debian.org/UnattendedUpgrades>

content/knowledge-base/basic-doom-emacs-commands.md

@@ -0,0 +1,63 @@
++++
+date = '2022-11-07T13:42:02'
+draft = false
+title = 'Basic Doom Emacs Commands'
+type = 'post'
+tags = ['Emacs']
++++
+
+This is basically just a collection of various commands I discovered while learning to use Doom Emacs. 
+All Sources will be listed at the bottom of this page.
+
+Also. This side does not provide a lot of explanation regarding the function of the commands. 
+It is just intended as a cheat sheet. 
+Updates/ Changes **will** be added to this post.
+
+# Navigation
+## Workspaces
+- switch between workspaces: '**SPC TAB .**'
+- load workspace: '**SPC TAB l**'
+- create new workspace: '**SPC TAB n**'
+- rename workspace: '**SPC TAB r**'
+- save workspace: '**SPC TAB s**'
+- select project for workspace: '**SPC p p**'
+### File Switching inside Workspaces
+- switch to file within current project: '**SPC SPC**'
+    - '**SPC .**' provides the save functionality but can also search outside the current project
+- switch to buffer within current project: '**SPC ,**'
+- switch to a buffer outside the current project: '**SPC b B**'
+- load recently viewed file: '**SPC fr**'
+
+## Finding Text
+- search all files in the current project: '**SPC sp**'
+- search inside the current buffer: '**/**' (normal Vim navigation)
+### Moving to Text
+- jump to line (faster then relative line numbers): '**gsj**'
+- '**s**' and two chars to jump to the nearest match
+    - '**S**' to jump backwards
+    - '**,**' or '**;**' to cycle through the matches (forwards/ backwards)
+         
+**NOTE:** this navigation can be combined with (almost) all of the standard Vim commands (e.g. '**vs\\<chars\\>**' visualizes all the text to the nearest match for \\<chars\\>)
+
+## Source Code
+- go to definition: '**gd**'
+- list references: '**gD**'
+### Fancy Delete
+**NOTE:** all these commands should also work for 'change' ('**c**')
+- delete inside the same indent (e.g. *function* of if statement): '**dii**'
+- delete inside the same indent + line above (e.g. *complete* if statement in python): '**dik**'
+- delete inside the same indent + line above and below (e.g. *complete* if statement in java): '**dij**'
+
+## Compilation Errors
+- next and previous flycheck error: '**\\]e**' and '**\\[e**'
+- list current errors: '**SPC c x**'
+
+# Miscellaneous
+- compile: '**SPC p c**'
+- open [Magit](https://magit.vc/): '**SPC gg**'
+- comment/ uncomment a line: '**gcc**'
+
+# Sources
+- https://github.com/doomemacs/doomemacs/
+- https://noelwelsh.com/posts/doom-emacs/
+- https://medium.com/@aria_39488/the-niceties-of-evil-in-doom-emacs-cabb46a9446b

content/knowledge-base/create-windows-usb-on-linux.md

@@ -0,0 +1,9 @@
++++
+date = '2022-09-04T15:51:15'
+draft = false
+title = 'Create Windows USB on Linux'
+type = 'post'
+tags = ['Linux']
++++
+
+# "USE [WOEUSB](https://github.com/WoeUSB/WoeUSB)"

content/knowledge-base/extract-images-from-pdf-on-linux.md

@@ -0,0 +1,12 @@
++++
+date = '2022-09-04T16:04:09'
+draft = false
+title = 'Extract Images From PDF on Linux'
+type = 'post'
+tags = ['Linux']
++++
+
+By using the `pdfimages` command included in most Linux distributions it is easy to extract all pictures included in a PDF document.
+Instructions on how to use the command can be found [here](https://www.xpdfreader.com/pdfimages-man.html).
+
+**Note:** the target directory for the extracted images must be created before executing the command, else it will just throw errors.

content/knowledge-base/finding-package-files-with-apt-files.md

@@ -0,0 +1,9 @@
++++
+date = '2022-09-04T15:59:30'
+draft = false
+title = 'Finding Package Files With Apt Files'
+type = 'post'
+tags = ['Linux','Debian']
++++
+
+To find the files/directories related to a package on a Debian-based system, use the [apt-file](https://wiki.debian.org/apt-file) package.

content/knowledge-base/german-quotations-in-latex.md

@@ -0,0 +1,11 @@
++++
+date = '2022-09-04T15:52:50'
+draft = false
+title = 'German Quotations in LaTeX'
+type = 'post'
+tags = ['LaTeX']
++++
+
+In short: do **not** use any fancy macros and shit that can break other configurations. 
+Just use the shorthands provided by the ```babel``` package. 
+For a list of all the babel shorthands see https://ctan.math.washington.edu/tex-archive/macros/latex/contrib/babel-contrib/german/ngermanb.pdf

content/knowledge-base/modify-image-timestamp.md

@@ -0,0 +1,67 @@
++++
+date = '2026-03-10T18:37:42+01:00'
+draft = false
+title = 'Modify Image Timestamp'
+type='post'
+tags = ['Linux', 'Photography']
++++
+Some cameras don't automatically update their internal clock. This leads to images with "wrong" timestamps.
+Modifying the [file metadata](https://en.wikipedia.org/wiki/Metadata) as well as the [Exif metadata](https://en.wikipedia.org/wiki/Exif) can fix this problem.
+
+## Modifying the file metadata
+```bash
+touch -m -d "<date>" "<file_name>"
+```
+- `-m` only modify the modification date
+- `-d "<date>"` use `<date>` instead of the current date 
+- `<file_name>` name of the file to be modified
+
+### Example Script for adding an offset
+The following command adds 20 years and 7 months while subtracting 6 days.
+```bash
+#!/bin/bash
+original_mtime=$(stat -c %y "<file_name>")
+new_mtime=$(date -d "$original_mtime +20 years +7 months -6 days" '+%Y-%m-%d %H:%M:%S')
+touch -m -d "$new_mtime" "<file_name>"
+```
+- `stat -c %y "<file_name>"` reads the current modification timestamp from the file
+- `date -d ...` calculates the new date
+
+## Modifying the Exif metadata
+```bash
+exiftool -P -overwrite_original "-allDates=<date>" "<file_name>"
+```
+- `exiftool` [FOSS](https://en.wikipedia.org/wiki/Free_and_open-source_software) tool for viewing and modifying Exif data ([source](https://exiftool.org/))
+- `-P` to not overwrite the file modification time (file metadata)
+- `allDates=...` modifies the exif metadata dates
+    - can be used with operators (i.e. `+=`, `-=`) for offsets
+
+### Example Script for adding an offset
+The following command adds 20 years and 7 months while subtracting 6 days.
+```bash
+#!/bin/bash
+exiftool -P -overwrite_original "-allDates+=20:7:0 0:0:0" "<file_name>"
+exiftool -P -overwrite_original "-allDates-=0:0:6 0:0:0" "<file_name>"
+```
+
+## Example Script for Combined Modification
+This script modifies all `.JPG` files in a given directory by adding 20 years and 7 months while subtracting 6 days.
+```bash
+#!/bin/bash
+
+find "<dir_name>" -type f -iname "*.JPG" -print0 | while IFS= read -r -d '' file; do
+    echo "Processing $file"
+    
+    #update meta data
+    original_mtime=$(stat -c %y "$file")
+    new_mtime=$(date -d "$original_mtime +20 years +7 months -6 days" '+%Y-%m-%d %H:%M:%S')
+    touch -m -d "$new_mtime" "$file"
+
+    #update exif data
+    exiftool -P -overwrite_original "-allDates+=20:7:0 0:0:0" "$file"
+    exiftool -P -overwrite_original "-allDates-=0:0:6 0:0:0" "$file"
+done
+
+echo "DONE!"
+```
+- `<dir_name>` name of the directory to be modified

content/knowledge-base/regex-basics.md

@@ -0,0 +1,58 @@
++++
+date = '2022-09-04T15:43:06'
+draft = false
+title = 'Regex Basics'
+type = 'post'
+tags = ['Misc']
++++
+[just text:](#just-text) matches any string with the given text inside it  
+[^](#^) matches string that starts with the given text  
+[$](#$) matches string that ends with the given text  
+[*](#*) zero or more  
+[+](#+) one or more  
+[?](#?) zero or one  
+[{n}](#{n}) `n` occurrences  
+[a|b or [ab]](#OR-operator) a or b  
+[\\d](#\\d) matches a digit  
+[\\w](#\\w) matches a word character (alphanumeric plus underscore)  
+[\\s](#\\s) matches a whitespace character  
+[.](#.) matches any character  
+
+## Anchors
+### just text
+`abc` matches any string that has the text _abc_ in it
+### ^
+`^abc` matches any string that starts with _abc_
+### $
+`abc$` matches any string that ends with _abc_
+### exact match
+`^abc$` matches only the exact string _abc_
+
+## Quantifiers
+### *
+`abc*` matches any string containing _ab_ followed by any number of _c_ s
+### +
+`abc+` matches any string containing _ab_ followed by at least one _c_
+### ?
+`abc?` matches any string containing _ab_ followed by at the most one _c_
+### {n}
+`abc{2}` matches any string containing _ab_ followed by two _c_ s  
+`abc{2,}` matches any string containing _ab_ followed by two __or more__ _c_ s  
+`abc{2,5}` matches any string containing _ab_ followed by between two and five _c_ s  
+
+## OR operator
+`a|b` _a_ or _b_
+`[abc]` _a_ or _b_ or _c_
+
+## Character classes
+### \d
+`\d` matches any character in a string that is a digit
+`\D` matches any character that __isn't__ a digit
+### \w
+`\w` matches any character in a string that is a word character
+`\W` matches any character that __isn't__ a word character
+### \s
+`\s` matches any whitespace character in a string
+`\S` matches any __non__-whitespace character
+### .
+`.` matches any character in a string

content/knowledge-base/ssh-basics.md

@@ -0,0 +1,27 @@
++++
+date = '2022-09-04T15:39:45'
+draft = false
+title = 'SSH Basics'
+type='post'
+tags = ['Misc']
++++
+
+## Generate Keypair
+```bash
+ssh-keygen
+```
+
+## Remote Login with Key
+```bash
+ssh-copy-id <Host>@<Remote>
+```
+
+### Disable Access via Password
+modify `/etc/ssh/sshd_config` so that it includes
+```
+PasswordAuthentication no
+```
+#### enable changes
+```
+systemctl restart ssh
+```

content/knowledge-base/teamviewer-on-arch.md

@@ -0,0 +1,13 @@
++++
+date = '2022-09-04T15:55:29'
+draft = false
+title = 'Teamviewer on Arch Linux'
+type = 'post'
+tags = ['Arch Linux', 'Linux', 'Misc']
++++
+
+1. install teamviewer from the AUR
+2. every time you want to run TeamViewer GUI the deamon needs to be running. 
+This only works with a Display Manager (e.g. LightDM) and systemd.  
+```sudo systemctl start teamviewerd```
+3. run the TeamViewer GUI

content/knowledge-base/tkinter-in-a-conda-environment.md

@@ -0,0 +1,17 @@
++++
+date = '2024-12-03T14:35:27+01:00'
+draft = false
+title = 'Tkinter in a Conda Environment'
+type = 'post'
+tags = ['Conda']
++++
+
+The default tk built shipped with conda does not have freetype support.
+
+## Workaround
+The workaround proposed in [this](https://github.com/conda-forge/tk-feedstock/pull/40#issuecomment-1803067221) Github issue is:
+```
+conda install -c conda-forge tk=*=xft_*
+```
+
+**Note:** in zsh the * need to be escaped

content/knowledge-base/using-3Dconnexion-mice-on-arch-linux.md

@@ -0,0 +1,25 @@
++++
+date = '2022-09-15T23:04:00'
+draft = false
+title = 'Using 3Dconnexion Mice on Arch Linux'
+type = 'post'
+tags = ['Arch Linux', 'Misc']
++++
+
+1. Check if the mouse is recognized by the system
+    ```bash
+    grep 3Dconnexion /proc/bus/input/devices
+    ```
+1. Install open source drivers [libspnav](https://archlinux.org/packages/extra/x86_64/libspnav/) and [spacenavd](https://aur.archlinux.org/packages/spacenavd)from the AUR (propriatary drivers are very old)
+
+1. test the setup by running the daemon manually (test programs like [FreeCAD](https://www.freecad.org/) might need to be restarted)
+    ```bash
+    spacenavd -v -d
+    ```
+1. the daemon is provided in the form of `spacenavd.service` by the [spacenavd](https://aur.archlinux.org/packages/spacenavd) package and can be started or enabled with [systemctl](https://wiki.archlinux.org/title/Systemctl)
+
+## configuration via GUI
+to view and modify the button mappings as well as the general configuration install the [spnavcfg](https://aur.archlinux.org/packages/spnavcfg) package from the AUR
+
+## Notes
+This "Tutorial" is just an abbreviated version of the [3D Mouse Arch Wiki Page](https://wiki.archlinux.org/title/3D_Mouse)

content/knowledge-base/wireguard-keepalive.md

@@ -0,0 +1,12 @@
++++
+date = '2022-09-04T15:56:51'
+draft = false
+title = 'Wireguard Keepalive'
+type = 'post'
+tags = ['Misc']
++++
+
+If one peer is behind a DynDNS you need to use the `reresolve-dns.sh` script included with the wireguard-tools package. 
+Excelent [documentation in the Arch-Wiki](https://wiki.archlinux.org/title/WireGuard#Endpoint_with_changing_IP)
+
+__Note__: wireguard-tools package is installed on another directory in Debian than in Arch. use [apt-file](/knowledge-base/finding-package-files-with-apt-files) to find the relevant directory.

hugo.toml

@@ -1,16 +1,38 @@
 baseURL = 'https://ploedige.com'
-languageCode = 'en'
+defaultContentLanguage = "en"
+languageCode = "en"
+enableEmoji = true
+
 title = 'Paul W. Lödige'
 theme = "gokarna"
 
+[params]
+    avatarAltText = "Profile Picture"
+    avatarSize = "size-xl"
+    avatarURL = "/images/micro_profile.jpg"
+    description = "Robotics Engineer"
+    footer = "Paul W. Lödige"
+
+    socialIcons = [
+        {name = "email", url = "mailto:paul@ploedige.com"},
+        {name = "linkedin", url = "https://www.linkedin.com/in/ploedige"},
+        {name = "scholar", url = "https://scholar.google.com/citations?user=b6G4zaEAAAAJ&hl"},
+        {name = "github", url = "https://github.com/ploedige"},
+    ]
 
 [menu]
     [[menu.main]]
-        name = "Posts"
-        url = "/posts/"
+        name = "CV"
+        url = "./documents/CV.pdf"
         weight = 1
 
     [[menu.main]]
-        name = "Tags"
-        url = "/tags/"
+        name = "Projects & Publications"
+        url = "/projects/"
         weight = 2
+
+    [[menu.main]]
+        name = "Knowledge Base"
+        url = "/knowledge-base/"
+        weight = 3
+

static/svg/icons/scholar.svg

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+
+<svg
+   aria-label="Google Scholar"
+   role="img"
+   viewBox="0 0 512 512"
+   version="1.1"
+   id="svg1"
+   sodipodi:docname="scholar.svg"
+   inkscape:version="1.4 (e7c3feb100, 2024-10-09)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#505050"
+     bordercolor="#ffffff"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="1"
+     inkscape:deskcolor="#505050"
+     inkscape:zoom="2.3398438"
+     inkscape:cx="256"
+     inkscape:cy="119.23873"
+     inkscape:window-width="2546"
+     inkscape:window-height="1402"
+     inkscape:window-x="1085"
+     inkscape:window-y="269"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg1" />
+  <path
+     id="rect1"
+     d="M 76.800781 0 C 34.25358 0 0 34.25358 0 76.800781 L 0 435.19922 C 0 477.74642 34.25358 512 76.800781 512 L 435.19922 512 C 477.74642 512 512 477.74642 512 435.19922 L 512 76.800781 C 512 34.25358 477.74642 0 435.19922 0 L 76.800781 0 z M 213 111 L 393 111 L 377 127 L 377 152 C 380 153 382 157 382 160 L 382 263 C 381 274 361 276 359 263 L 359 160 C 359 157 361 153 364 151 L 365 135 L 320 173 C 324 188 328 199 326 216 C 322 240 302 250 287 267 C 280 279 285 289 308 307 C 329 324 343 343 339 378 C 330 413 287 433 249 432 C 220 432 161 423 157 378 C 157 337 217 312 260 311 C 249 299 246 290 253 272 C 216 269 180 250 175 205 L 106 205 L 213 111 z M 243.15039 152.15625 C 239.88745 152.04688 236.5 152.3125 233 153 C 184 165 210 262 271 252 C 313.1875 239.8125 292.09448 153.79688 243.15039 152.15625 z M 266 325 C 230 325 195 348 195 373 C 194 399 232 412 276 403 C 327 388 326 338 266 325 z " />
+</svg>