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<h1 class="title">Latex Endeavors</h1>
<p class="subtitle">Some unintuitive quirks of Latex</p>
<p class="author">Never</p>
<p class="date">2026-01-09</p>
</header>
<nav id="TOC" role="doc-toc">
<ul>
<li><a href="#biblatex-and-biber" id="toc-biblatex-and-biber">BibLaTeX
and Biber</a>
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<li><a href="#biber-doesnt-run" id="toc-biber-doesnt-run">Biber doesn’t
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<h1 id="biblatex-and-biber">BibLaTeX and Biber</h1>
<h2 id="biber-doesnt-run">Biber doesn’t run</h2>
<p>Biber doens’t run if the (fedora) package
<code>libxcrypt-compat</code> is missing. It will fail with the error
message</p>
<pre><code>biber: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory</code></pre>
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<h1 id="biblatex-and-biber">BibLaTeX and Biber</h1>
<h2 id="biber-doesnt-run">Biber doesn’t run</h2>
<p>Biber doens’t run if the (fedora) package
<code>libxcrypt-compat</code> is missing. It will fail with
the error message</p>
<pre><code>biber: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory</code></pre>
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<p class="author">Never</p>
<p class="date">2025-07-25</p>
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doesn’t rasterize and scales down the pdf files.</p>
<div class="sourceCode" id="cb1"><pre
class="sourceCode bash"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">gs</span> <span class="at">-dNOPAUSE</span> <span class="at">-sDEVICE</span><span class="op">=</span>pdfwrite <span class="dt">\</span></span>
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<p class="subtitle">Neat things I picked up along the
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<p class="author">Never</p>
<p class="date">2025-07-25</p>
</header>
<nav id="TOC" role="doc-toc">
<ul>
<li><a href="#merge-pdfs" id="toc-merge-pdfs">Merge pdfs</a>
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id="toc-using-ghostscript">Using Ghostscript</a></li>
</ul></li>
</ul>
</nav>
<article>
<h1 id="merge-pdfs">Merge pdfs</h1>
<h2 id="using-ghostscript">Using Ghostscript</h2>
<p>Ghostscript has a feature to merge multiple pdf files
into one. Although ImageMagick also has this feature, I
prefer this one, as it doesn’t rasterize and scales down the
pdf files.</p>
<div class="sourceCode" id="cb1"><pre
class="sourceCode bash"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">gs</span> <span class="at">-dNOPAUSE</span> <span class="at">-sDEVICE</span><span class="op">=</span>pdfwrite <span class="dt">\</span></span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a> <span class="at">-sOUTPUTFILE</span><span class="op">=</span>output.pdf <span class="dt">\</span></span>
<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a> <span class="at">-dBATCH</span> 1.pdf 2.pdf</span></code></pre></div>
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@ -92,61 +92,69 @@ code span.st { color: #2aa198; } /* String */
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<h1 class="title">Using rsync on Android to syncronise my Music
library</h1>
<p class="author">Never</p>
<p class="date">2026-01-12</p>
</header>
<nav id="TOC" role="doc-toc">
<ul>
<li><a href="#setup-termux" id="toc-setup-termux">Setup Termux</a></li>
<li><a href="#establishing-an-ssh-connection"
id="toc-establishing-an-ssh-connection">Establishing an ssh
connection</a>
<ul>
<li><a href="#configuring-android"
id="toc-configuring-android">Configuring Android</a></li>
<li><a href="#connecting-to-android-via-ssh"
id="toc-connecting-to-android-via-ssh">Connecting to Android via
ssh</a></li>
</ul></li>
<li><a href="#syncronising-files-with-rsync"
id="toc-syncronising-files-with-rsync">Syncronising files with
rsync</a></li>
</ul>
</nav>
<article>
<h1 id="setup-termux">Setup Termux</h1>
<p>Install Termux using F-Droid.</p>
<p>Update software repos.</p>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="ex">pkg</span> update</span></code></pre></div>
<p>Grant file access permissions using.</p>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">termux-setup-storage</span></span></code></pre></div>
<h1 id="establishing-an-ssh-connection">Establishing an ssh
connection</h1>
<p>If network (such as eduroam) is blocking ssh trafic between machines,
open a Wi-Fi Hotspot on your Linux machine and connect the Android
device to it before using <code>rsync</code> or <code>ssh</code>.</p>
<h2 id="configuring-android">Configuring Android</h2>
<p>Install the openssh server on Termux.</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">pkg</span> install openssh</span></code></pre></div>
<p>Start the ssh server daemon.</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">sshd</span></span></code></pre></div>
<p>Get the ip address of the Android machine (in the Hotspot).</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">ifconfig</span></span></code></pre></div>
<pre><code>Warning: cannot open /proc/net/dev (Permission denied). Limited output.
<img id="shork" src="images/shork.png"></img>
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<header id="title-block-header">
<h1 class="title">Using rsync on Android to syncronise my
Music library</h1>
<p class="author">Never</p>
<p class="date">2026-01-12</p>
</header>
<nav id="TOC" role="doc-toc">
<ul>
<li><a href="#setup-termux" id="toc-setup-termux">Setup
Termux</a></li>
<li><a href="#establishing-an-ssh-connection"
id="toc-establishing-an-ssh-connection">Establishing an ssh
connection</a>
<ul>
<li><a href="#configuring-android"
id="toc-configuring-android">Configuring Android</a></li>
<li><a href="#connecting-to-android-via-ssh"
id="toc-connecting-to-android-via-ssh">Connecting to Android
via ssh</a></li>
</ul></li>
<li><a href="#syncronising-files-with-rsync"
id="toc-syncronising-files-with-rsync">Syncronising files
with rsync</a></li>
</ul>
</nav>
<article>
<h1 id="setup-termux">Setup Termux</h1>
<p>Install Termux using F-Droid.</p>
<p>Update software repos.</p>
<div class="sourceCode" id="cb1"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="ex">pkg</span> update</span></code></pre></div>
<p>Grant file access permissions using.</p>
<div class="sourceCode" id="cb2"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">termux-setup-storage</span></span></code></pre></div>
<h1 id="establishing-an-ssh-connection">Establishing an ssh
connection</h1>
<p>If network (such as eduroam) is blocking ssh trafic
between machines, open a Wi-Fi Hotspot on your Linux machine
and connect the Android device to it before using
<code>rsync</code> or <code>ssh</code>.</p>
<h2 id="configuring-android">Configuring Android</h2>
<p>Install the openssh server on Termux.</p>
<div class="sourceCode" id="cb3"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">pkg</span> install openssh</span></code></pre></div>
<p>Start the ssh server daemon.</p>
<div class="sourceCode" id="cb4"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">sshd</span></span></code></pre></div>
<p>Get the ip address of the Android machine (in the
Hotspot).</p>
<div class="sourceCode" id="cb5"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">ifconfig</span></span></code></pre></div>
<pre><code>Warning: cannot open /proc/net/dev (Permission denied). Limited output.
lo: flags=73&lt;UP,LOOPBACK,RUNNING&gt; mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
@ -158,46 +166,49 @@ rmnet0: flags=4305&lt;UP,POINTOPOINT,RUNNING,NOARP,MULTICAST&gt; mtu 1280
wlan0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500
inet 10.42.0.200 netmask 255.255.255.0 broadcast 10.42.0.210
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)</code></pre>
<p>In this case 10.42.0.200.</p>
<p>The ssh server should now be running and listening on port 8022. You
can check by running</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="fu">nmap</span> <span class="at">-Pn</span> <span class="op">&lt;</span>ip_address<span class="op">&gt;</span></span></code></pre></div>
<p>For me <code>&lt;ip_address&gt;</code> whould be 10.42.0.200.</p>
<p>Get the username.</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">whoami</span></span></code></pre></div>
<pre><code>u0_a700</code></pre>
<p>Set a password for this user.</p>
<div class="sourceCode" id="cb10"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">passwd</span></span></code></pre></div>
<h2 id="connecting-to-android-via-ssh">Connecting to Android via
ssh</h2>
<p>Make sure you have an ssh key pair on the Linux system. If not
generate one using <code>ssh-keygen</code>.</p>
<p>Now connect to Android by <code>ssh</code>.</p>
<div class="sourceCode" id="cb11"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">ssh</span> <span class="op">&lt;</span>username<span class="op">&gt;</span>@<span class="op">&lt;</span>ip_address<span class="op">&gt;</span> -p 8022</span></code></pre></div>
<h1 id="syncronising-files-with-rsync">Syncronising files with
rsync</h1>
<p>Install <code>rsync</code> on Termux and Linux. Make sure to keep
your own openssl config.</p>
<div class="sourceCode" id="cb12"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="ex">pkg</span> install rsync</span></code></pre></div>
<p>Now on your Linux machine, syncronise your Music library with
rsync.</p>
<div class="sourceCode" id="cb13"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="fu">rsync</span> <span class="at">-av</span> <span class="at">-e</span> <span class="st">&quot;ssh -p 8022&quot;</span> ~/Music <span class="op">&lt;</span>username<span class="op">&gt;</span>@<span class="op">&lt;</span>ip_address<span class="op">&gt;</span>:/data/data/com.termux/files/home/storage/music</span></code></pre></div>
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<p>In this case 10.42.0.200.</p>
<p>The ssh server should now be running and listening on
port 8022. You can check by running</p>
<div class="sourceCode" id="cb7"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="fu">nmap</span> <span class="at">-Pn</span> <span class="op">&lt;</span>ip_address<span class="op">&gt;</span></span></code></pre></div>
<p>For me <code>&lt;ip_address&gt;</code> whould be
10.42.0.200.</p>
<p>Get the username.</p>
<div class="sourceCode" id="cb8"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">whoami</span></span></code></pre></div>
<pre><code>u0_a700</code></pre>
<p>Set a password for this user.</p>
<div class="sourceCode" id="cb10"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">passwd</span></span></code></pre></div>
<h2 id="connecting-to-android-via-ssh">Connecting to Android
via ssh</h2>
<p>Make sure you have an ssh key pair on the Linux system.
If not generate one using <code>ssh-keygen</code>.</p>
<p>Now connect to Android by <code>ssh</code>.</p>
<div class="sourceCode" id="cb11"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">ssh</span> <span class="op">&lt;</span>username<span class="op">&gt;</span>@<span class="op">&lt;</span>ip_address<span class="op">&gt;</span> -p 8022</span></code></pre></div>
<h1 id="syncronising-files-with-rsync">Syncronising files
with rsync</h1>
<p>Install <code>rsync</code> on Termux and Linux. Make sure
to keep your own openssl config.</p>
<div class="sourceCode" id="cb12"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="ex">pkg</span> install rsync</span></code></pre></div>
<p>Now on your Linux machine, syncronise your Music library
with rsync.</p>
<div class="sourceCode" id="cb13"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="fu">rsync</span> <span class="at">-av</span> <span class="at">-e</span> <span class="st">&quot;ssh -p 8022&quot;</span> ~/Music <span class="op">&lt;</span>username<span class="op">&gt;</span>@<span class="op">&lt;</span>ip_address<span class="op">&gt;</span>:/data/data/com.termux/files/home/storage/music</span></code></pre></div>
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<title>Using rsync on Android to syncronise my Music
library</title>
<link href="https://nevereverever.de/eh/eh/eh/eh-eh/rsync-android.html"/>
<id></id>
<updated>2026-01-12</updated>
<author>
<name>Never</name>
</author>
<summary>As Spotify is getting enshittified by capitalism,
keeping a music library is kind of essential. Here I use rsync to
syncronise my library with my Android smartphone.</summary>
</entry>
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<title>Latex Endeavors</title>
<link href="https://nevereverever.de/eh/eh/eh/eh-eh/latex-endeavors.html"/>
<id></id>
<updated>2026-01-09</updated>
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</author>
<summary>Latex undoubtedly has some quirks. Some of them have a
rather unintuitive solution. In this article I cover some quirks and
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<title>Random linux utilities</title>
<link href="https://nevereverever.de/eh/eh/eh/eh-eh/random-linux-utils.html"/>
<id></id>
<updated>2025-07-25</updated>
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<summary>Tricks and tools I learned about, while tweaking my
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and tinker with. Maybe I’ll write an article about its build system. It
is also viewable via <code>curl</code>. Just run</p>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="ex">curl</span> nevereverever.de</span></code></pre></div>
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</header>
<p class="articles-summary">As Spotify is getting enshittified by
capitalism, keeping a music library is kind of essential. Here I use
rsync to syncronise my library with my Android smartphone.</p>
<footer class="articles-footer">
<div class="articles-author">Never</div>
<div class="articles-date">2026-01-12</div>
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<article>
<p>Hello! I am Never and this is my little place on the
internet where I post the stuff that I am currently nerding
out about.</p>
<p>This Website itself is one of those projects, that I like
to tweak and tinker with. Maybe I’ll write an article about
its build system. It is also viewable via <code>curl</code>.
Just run</p>
<div class="sourceCode" id="cb1"><pre
class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="ex">curl</span> nevereverever.de</span></code></pre></div>
<p>There also is an RSS Feed to stay updated about my
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<header class="articles-header">
<a href="rsync-android.html" class="articles-title">Using
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</header>
<p class="articles-summary">As Spotify is getting
enshittified by capitalism, keeping a music library is kind of
essential. Here I use rsync to syncronise my library with my Android
smartphone.</p>
<footer class="articles-footer">
<div class="articles-author">Never</div>
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<footer class="articles-footer">
<div class="articles-author">Never</div>
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