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<article role="main" id="furo-main-content">
<section id="regular-expressions">
<span id="id1"></span><h1>Regulære udtryk<a class="headerlink" href="#regular-expressions" title="Link to this heading">¶</a></h1>
<p><a class="reference external" href="https://en.wikipedia.org/wiki/Regular_expression">Regulære udtryk</a> beskriver mønstre i strenge, der kan bruges til at bestemme, om et givet mønster forekommer i en tekst eller ej.</p>
<p>I TreeSize kan regulære udtryk bruges til at finde specifikke filer og / eller mapper, der matcher de kriterier, der er angivet af regulære udtryk. En <a class="reference external" href="https://www.jam-software.com/redirects/?regex_syntax_info">liste over specielle tegn</a> understøttes.</p>
<p>Følgende tabel viser nogle af de mest anvendte syntakser og giver et par eksempler:</p>
<div class="table-wrapper colwidths-given docutils container">
<table class="docutils align-default">
<colgroup>
<col style="width: 20.0%" />
<col style="width: 10.0%" />
<col style="width: 40.0%" />
<col style="width: 30.0%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Udtryk</p></th>
<th class="head"><p>Syntaks</p></th>
<th class="head"><p>Beskrivelse</p></th>
<th class="head"><p>Eksempel</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p>Enhver karakter</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">.</span></code></p></td>
<td><p>Matcher enhver enkelt karakter undtagen et linjeskift.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">a.o</span></code> matcher »aro« i »around« og »abo« i »about«, men ikke »acro« i »across«.</p></td>
</tr>
<tr class="row-odd"><td><p>Nul eller flere</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">*</span></code></p></td>
<td><p>Matcher nul eller flere forekomster af det foregående udtryk og laver alle mulige matcher.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">a*b</span></code> matcher »b« i »bat« og »ab« i »about«. <code class="docutils literal notranslate"><span class="pre">e.*e</span></code> matcher ordet »enterprise«.</p></td>
</tr>
<tr class="row-even"><td><p>Én eller flere</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">+</span></code></p></td>
<td><p>Matcher mindst én forekomst af det foregående udtryk.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">ac+</span></code> matcher ord, der indeholder bogstavet »a« og mindst én instans af »c«, såsom »race« og »ace«. <code class="docutils literal notranslate"><span class="pre">a.+s</span></code> matcher ordet »access«.</p></td>
</tr>
<tr class="row-odd"><td><p>Start på streng</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">^</span></code></p></td>
<td><p>Matcher starten af en streng.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">^[0-9]</span></code> matcher strenge, der starter med et ciffer.</p></td>
</tr>
<tr class="row-even"><td><p>Slutningen af strengen</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">$</span></code></p></td>
<td><p>Matcher slutningen af en streng.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">exe$</span></code> matcher strenge, der ender med »exe«.</p></td>
</tr>
<tr class="row-odd"><td><p>Begyndelsen af ord</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[[:<:]]</span></code></p></td>
<td><p>Matcher kun når et ord starter på dette punkt i teksten.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[[:<:]]in</span></code> matcher ord som »inside« og »into«, der begynder med bogstaverne »in«.</p></td>
</tr>
<tr class="row-even"><td><p>Slutningen af ord</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[[:>:]]</span></code></p></td>
<td><p>Matcher kun når et ord slutter på dette punkt i teksten.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">ss[[:>:]]</span></code> matcher ord som »across« og »loss«, der ender med bogstaverne »ss«.</p></td>
</tr>
<tr class="row-odd"><td><p>Enhver enkelt karakter i sættet</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[]</span></code></p></td>
<td><p>Matcher enhver af karaktererne i []. For at specificere et interval af karakterer, angiv de startende og afsluttende karakterer adskilt af et bindestreg (-), som i [a-z].</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">be[n-t]</span></code> matcher »bet« i »between«, »ben« i »beneath«, og »bes« i »beside«, men ikke »bel« i »below«.</p></td>
</tr>
<tr class="row-even"><td><p>Enhver enkelt karakter, der ikke er i sættet</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[^...]</span></code></p></td>
<td><p>Matcher enhver karakter, der ikke er i sættet af karakterer, der følger efter <code class="docutils literal notranslate"><span class="pre">^</span></code>.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">be[^n-t]</span></code> matcher »bef« i »before«, »beh« i »behind«, og »bel« i »below«, men ikke »ben« i »beneath«.</p></td>
</tr>
<tr class="row-odd"><td><p>Eller</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">|</span></code></p></td>
<td><p>Matcher enten udtrykket før eller det efter OR-symbolet (|). Bruges hovedsageligt i en gruppe.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">(sponge|mud)</span></code> matcher »sponge bath« og »mud bath«.</p></td>
</tr>
<tr class="row-even"><td><p>Escape-tegn</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">\</span></code></p></td>
<td><p>Matcher det tegn, der følger efter backslashen (<code class="docutils literal notranslate"><span class="pre">\</span></code>) som et litteralt tegn. Dette gør det muligt at finde de tegn, der bruges i regulær udtryksnotation, såsom <code class="docutils literal notranslate"><span class="pre">{</span></code> og <code class="docutils literal notranslate"><span class="pre">^</span></code>.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">\^</span></code> søger efter <code class="docutils literal notranslate"><span class="pre">^</span></code>-tegnet.</p></td>
</tr>
<tr class="row-odd"><td><p>Gentag n gange</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">{n}</span></code></p></td>
<td><p>Matcher n forekomster af det forudgående udtryk.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[0-9]{4}</span></code> matcher enhver 4-cifret sekvens.</p></td>
</tr>
<tr class="row-even"><td><p>Gruppering</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">()</span></code></p></td>
<td><p>Lader dig gruppere et sæt af udtryk sammen. Hvis du vil søge efter to forskellige udtryk i en enkelt søgning, kan du bruge grupperingsudtrykket til at kombinere dem.</p></td>
<td><p>Hvis du vil søge efter <code class="docutils literal notranslate"><span class="pre">[a-z][1-3]</span></code> eller <code class="docutils literal notranslate"><span class="pre">[0-9][a-z]</span></code>, ville du kombinere dem: <code class="docutils literal notranslate"><span class="pre">([a-z][1-3])|([0-9][a-z])</span></code>.</p></td>
</tr>
</tbody>
</table>
</div>
<section id="more-examples">
<h2>Flere eksempler<a class="headerlink" href="#more-examples" title="Link to this heading">¶</a></h2>
<div class="table-wrapper colwidths-given docutils container">
<table class="docutils align-default">
<colgroup>
<col style="width: 40.0%" />
<col style="width: 60.0%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Regulært udtryk</p></th>
<th class="head"><p>Brugssag</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[0-9]</span></code> eller <code class="docutils literal notranslate"><span class="pre">\d</span></code></p></td>
<td><p>Find all files/folders with mindst ét tal i deres navn.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">a|b</span></code></p></td>
<td><p>Find alle filer/mapper, der indeholder »a« eller »b« i deres navn.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[^(A-Za-z)]</span></code></p></td>
<td><p>Find alle filer/mapper, der indeholder mindst ét tegn i deres navn, som ikke er i området A-Z eller a-z.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">^E[0-9]{7}$</span></code></p></td>
<td><p>Find alle filer/mapper, som starter med et »E« efterfulgt af præcis 7 cifre.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[A-Za-z]:\\([^\\]+\\){2,4}[^\\]+$</span></code></p></td>
<td><p>Find alle filer/mapper med en mappedybde på mindst 2 og højst 4.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">[^\x00-\x7F]</span></code></p></td>
<td><p>Find alle filer/mapper med ugyldige ASCII karakterer.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[^\P{C}]</span></code></p></td>
<td><p>Find alle filer/mapper med Unicode-tegn, som ikke kan udskrives.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">[\xA0]</span></code></p></td>
<td><p>Find alle fil-/mappenavne, der indeholder det ikke-brydelige mellemrumstegn (Unicode NOBR, U+00A0) i stedet for et normalt mellemrumstegn.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[~\""#%&\*\:<>\?\/\\{|}]</span></code></p></td>
<td><p>Find alle fil- og mappenavne, der indeholder tegn, der er ugyldige på SharePoint-servere.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">^\s+.*</span></code></p></td>
<td><p>Find alle filer og mapper med et foranstillet mellemrum.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">\s+(\.[^.]+)$</span></code></p></td>
<td><p>Find filer med en udvidelse, der har et efterfølgende mellemrum i slutningen af deres navn.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">.*\s+$</span></code></p></td>
<td><p>Find mapper med et efterfølgende mellemrum i slutningen af deres navn.</p></td>
</tr>
</tbody>
</table>
</div>
</section>
<section id="tools-for-creating-regular-expressions">
<h2>Værktøjer til at oprette regulære udtryk<a class="headerlink" href="#tools-for-creating-regular-expressions" title="Link to this heading">¶</a></h2>
<p><a class="reference external" href="https://regex101.com/">https://regex101.com/</a> (online)</p>
<p><a class="reference external" href="http://regexpal.com/">http://regexpal.com/</a> (online)</p>
<p><a class="reference external" href="http://sourceforge.net/projects/regexpeditor/">http://sourceforge.net/projects/regexpeditor/</a> (download)</p>
<p><a class="reference external" href="http://sourceforge.net/projects/regextester/">http://sourceforge.net/projects/regextester/</a> (download)</p>
<p><a class="reference external" href="http://sourceforge.net/projects/regaxe/">http://sourceforge.net/projects/regaxe/</a> (downloade)</p>
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