diff --git a/01-intro.html b/01-intro.html
index 9438832d8..ecb0efee5 100644
--- a/01-intro.html
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@@ -504,8 +504,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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@@ -528,7 +528,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/01-intro.html",
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diff --git a/02-filedir.html b/02-filedir.html
index 05fdfe26f..ec47c0ac3 100644
--- a/02-filedir.html
+++ b/02-filedir.html
@@ -624,7 +624,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>The <code>-l</code> option makes <code>ls</code> use a
 <strong>l</strong>ong listing format, showing not only the
@@ -662,7 +662,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>The most recently changed file is listed last when using
 <code>-rt</code>. This can be very useful for finding your most recent
@@ -1011,7 +1011,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>No: <code>.</code> stands for the current directory.</li>
 <li>No: <code>/</code> stands for the root directory.</li>
@@ -1054,7 +1054,7 @@ <h4 class="accordion-header" id="headingSolution4">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>No: there <em>is</em> a directory <code>backup</code> in
 <code>/Users</code>.</li>
@@ -1098,7 +1098,7 @@ <h4 class="accordion-header" id="headingSolution5">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>No: <code>pwd</code> is not the name of a directory.</li>
 <li>Yes: <code>ls</code> without directory argument lists files and
@@ -1327,8 +1327,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
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-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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@@ -1351,7 +1351,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/02-filedir.html",
   "dateCreated": "2014-10-22",
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diff --git a/03-create.html b/03-create.html
index 2b6a7306e..e6540036d 100644
--- a/03-create.html
+++ b/03-create.html
@@ -1563,8 +1563,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
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-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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       and <a href="https://github.com/carpentries/varnish/tree/0.2.18" class="external-link">varnish (0.2.18)</a>.</p>
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@@ -1587,7 +1587,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/03-create.html",
   "dateCreated": "2014-10-22",
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diff --git a/04-pipefilter.html b/04-pipefilter.html
index 5aac91c66..54ef500b5 100644
--- a/04-pipefilter.html
+++ b/04-pipefilter.html
@@ -1181,8 +1181,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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@@ -1205,7 +1205,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/04-pipefilter.html",
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   "dateModified": "2023-07-19",
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+  "datePublished": "2023-09-05"
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diff --git a/05-loop.html b/05-loop.html
index 04acf0ff9..bb1bcc6ae 100644
--- a/05-loop.html
+++ b/05-loop.html
@@ -1305,8 +1305,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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       and <a href="https://github.com/carpentries/varnish/tree/0.2.18" class="external-link">varnish (0.2.18)</a>.</p>
 			</div>
 		</footer></div> <!-- / div.container -->
@@ -1329,7 +1329,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/05-loop.html",
   "dateCreated": "2014-10-22",
   "dateModified": "2023-08-09",
-  "datePublished": "2023-08-29"
+  "datePublished": "2023-09-05"
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diff --git a/06-script.html b/06-script.html
index 3bb6f3430..ba402861f 100644
--- a/06-script.html
+++ b/06-script.html
@@ -587,7 +587,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -657,7 +657,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>If a command causes something to crash or hang, it might be useful to
 know what that command was, in order to investigate the problem. Were
@@ -781,7 +781,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The correct answer is 2.</p>
 <p>The special variables <code>$1</code>, <code>$2</code> and
@@ -838,7 +838,7 @@ <h4 class="accordion-header" id="headingSolution4">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb40">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -910,7 +910,7 @@ <h4 class="accordion-header" id="headingSolution5">
   Solutions
   </h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>In each case, the shell expands the wildcard in <code>*.pdb</code>
 before passing the resulting list of file names as arguments to the
@@ -981,7 +981,7 @@ <h4 class="accordion-header" id="headingSolution6">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <p>The <code>-x</code> option causes <code>bash</code> to run in debug
 mode. This prints out each command as it is run, which will help you to
@@ -1048,8 +1048,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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 		</footer></div> <!-- / div.container -->
@@ -1072,7 +1072,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/06-script.html",
   "dateCreated": "2014-10-22",
   "dateModified": "2023-08-05",
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diff --git a/07-find.html b/07-find.html
index 43944b72b..79c1fdc06 100644
--- a/07-find.html
+++ b/07-find.html
@@ -1112,8 +1112,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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       and <a href="https://github.com/carpentries/varnish/tree/0.2.18" class="external-link">varnish (0.2.18)</a>.</p>
 			</div>
 		</footer></div> <!-- / div.container -->
@@ -1136,7 +1136,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "identifier": "https://swcarpentry.github.io/shell-novice/07-find.html",
   "dateCreated": "2014-10-22",
   "dateModified": "2023-08-05",
-  "datePublished": "2023-08-29"
+  "datePublished": "2023-09-05"
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diff --git a/404.html b/404.html
index 304cb6656..9b6e983ce 100644
--- a/404.html
+++ b/404.html
@@ -276,8 +276,8 @@ <h1>Page not found</h1>
         <p>Materials licensed under <a href="https://swcarpentry.github.io/shell-novice/LICENSE.html" class="external-link">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
+        <a href="https://github.com/carpentries/pegboard/tree/0.6.0" class="external-link">pegboard (0.6.0)</a>,
       and <a href="https://github.com/carpentries/varnish/tree/0.2.18" class="external-link">varnish (0.2.18)</a>.</p>
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@@ -299,8 +299,8 @@ <h1>Page not found</h1>
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   "identifier": "https://swcarpentry.github.io/shell-novice/404.html",
   "dateCreated": "2014-10-22",
-  "dateModified": "2023-08-29",
-  "datePublished": "2023-08-29"
+  "dateModified": "2023-09-05",
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 }
 
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index ffca3438d..8422647b9 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -299,8 +299,8 @@ <h1>Contributor Code of Conduct</h1>
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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 			</div>
 		</footer></div> <!-- / div.container -->
@@ -323,7 +323,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://swcarpentry.github.io/shell-novice/CODE_OF_CONDUCT.html",
   "dateCreated": "2014-10-22",
   "dateModified": "2023-05-02",
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diff --git a/LICENSE.html b/LICENSE.html
index 273944617..7e4e327fb 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -350,8 +350,8 @@ <h1>Licenses</h1>
         <p>Materials licensed under <a href="LICENSE.html">CC-BY 4.0</a> by the authors</p>
         
         <p><a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">Template licensed under CC-BY 4.0</a> by <a href="https://carpentries.org" class="external-link">The Carpentries</a></p>
-        <p>Built with <a href="https://github.com/carpentries/sandpaper" class="external-link">sandpaper (0.12.5)</a>,
-        <a href="https://github.com/carpentries/pegboard" class="external-link">pegboard (0.5.3)</a>,
+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
+        <a href="https://github.com/carpentries/pegboard/tree/0.6.0" class="external-link">pegboard (0.6.0)</a>,
       and <a href="https://github.com/carpentries/varnish/tree/0.2.18" class="external-link">varnish (0.2.18)</a>.</p>
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 		</footer></div> <!-- / div.container -->
@@ -374,7 +374,7 @@ <h1>Licenses</h1>
   "identifier": "https://swcarpentry.github.io/shell-novice/LICENSE.html",
   "dateCreated": "2014-10-22",
   "dateModified": "2023-05-02",
-  "datePublished": "2023-08-29"
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diff --git a/aio.html b/aio.html
index 740259109..1cbb21636 100644
--- a/aio.html
+++ b/aio.html
@@ -903,7 +903,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>The <code>-l</code> option makes <code>ls</code> use a
 <strong>l</strong>ong listing format, showing not only the
@@ -941,7 +941,7 @@ <h4 class="accordion-header" id="headingSolution2">
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-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="accordion-body">
 <p>The most recently changed file is listed last when using
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@@ -1294,7 +1294,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>No: <code>.</code> stands for the current directory.</li>
@@ -1342,7 +1342,7 @@ <h4 class="accordion-header" id="headingSolution4">
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   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>No: there <em>is</em> a directory <code>backup</code> in
@@ -1390,7 +1390,7 @@ <h4 class="accordion-header" id="headingSolution5">
   Show me the solution
   </h4>
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-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>No: <code>pwd</code> is not the name of a directory.</li>
@@ -5166,7 +5166,7 @@ <h4 class="accordion-header" id="headingSolution1">
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   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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@@ -5236,7 +5236,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <p>If a command causes something to crash or hang, it might be useful to
 know what that command was, in order to investigate the problem. Were
@@ -5363,7 +5363,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The correct answer is 2.</p>
 <p>The special variables <code>$1</code>, <code>$2</code> and
@@ -5420,7 +5420,7 @@ <h4 class="accordion-header" id="headingSolution4">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>In each case, the shell expands the wildcard in <code>*.pdb</code>
 before passing the resulting list of file names as arguments to the
@@ -5563,7 +5563,7 @@ <h4 class="accordion-header" id="headingSolution6">
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+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
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 <p>The <code>-x</code> option causes <code>bash</code> to run in debug
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@@ -6461,8 +6461,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
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diff --git a/instructor/01-intro.html b/instructor/01-intro.html
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diff --git a/instructor/02-filedir.html b/instructor/02-filedir.html
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-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
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 <div class="accordion-body">
 <p>Introducing and navigating the filesystem in the shell (covered in <a href="02-filedir.html">Navigating Files and Directories</a> section) can
 be confusing. You may have both terminal and GUI file explorer open side
@@ -642,7 +642,7 @@ <h4 class="accordion-header" id="headingSolution1">
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   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <p>The <code>-l</code> option makes <code>ls</code> use a
 <strong>l</strong>ong listing format, showing not only the
@@ -680,7 +680,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <p>The most recently changed file is listed last when using
 <code>-rt</code>. This can be very useful for finding your most recent
@@ -1029,7 +1029,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <ol style="list-style-type: decimal"><li>No: <code>.</code> stands for the current directory.</li>
 <li>No: <code>/</code> stands for the root directory.</li>
@@ -1072,7 +1072,7 @@ <h4 class="accordion-header" id="headingSolution4">
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   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>No: there <em>is</em> a directory <code>backup</code> in
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@@ -1116,7 +1116,7 @@ <h4 class="accordion-header" id="headingSolution5">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>No: <code>pwd</code> is not the name of a directory.</li>
 <li>Yes: <code>ls</code> without directory argument lists files and
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 <p>If a command causes something to crash or hang, it might be useful to
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-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The correct answer is 2.</p>
 <p>The special variables <code>$1</code>, <code>$2</code> and
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   Show me the solution
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-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 <p>In each case, the shell expands the wildcard in <code>*.pdb</code>
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diff --git a/instructor/aio.html b/instructor/aio.html
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 <div class="accordion-body">
 <p>Introducing and navigating the filesystem in the shell (covered in <a href="02-filedir.html">Navigating Files and Directories</a> section) can
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <p>The <code>-l</code> option makes <code>ls</code> use a
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@@ -957,7 +957,7 @@ <h4 class="accordion-header" id="headingSolution2">
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-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="accordion-body">
 <p>The most recently changed file is listed last when using
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   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 <ol style="list-style-type: decimal">
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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 <ol style="list-style-type: decimal">
 <li>No: there <em>is</em> a directory <code>backup</code> in
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   </h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>No: <code>pwd</code> is not the name of a directory.</li>
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>If a command causes something to crash or hang, it might be useful to
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The correct answer is 2.</p>
 <p>The special variables <code>$1</code>, <code>$2</code> and
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 <p>In each case, the shell expands the wildcard in <code>*.pdb</code>
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   Show me the solution
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-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
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 <p>The <code>-x</code> option causes <code>bash</code> to run in debug
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@@ -6501,8 +6501,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.12.4" class="external-link">sandpaper (0.12.4)</a>,
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--- a/instructor/images.html
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index 648c41df0..6a82a4a0b 100644
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diff --git a/instructor/reference.html b/instructor/reference.html
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diff --git a/key-points.html b/key-points.html
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index 7de51a1ce..4ce79378b 100644
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