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<li class="sidebarTitle">PMD 6.50.0-SNAPSHOT</li>
<div class="sidebarTitleDate">Release date: 30-September-2022</div>
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» Installation and basic CLI usage
<a
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<div class="post-header">
<h1 class="post-title-main">Installation and basic CLI usage</h1>
</div>
<div class="post-content" data-github-edit-url="https://github.com/pmd/pmd/blob/master/docs/pages/pmd/userdocs/installation.md">
<div class="summary">Sums up the first steps to set up a CLI installation and get started using PMD</div>
<div id="inline-toc"><!-- empty, move TOC here when screen size too small --></div>
<h2 id="how-to-install-pmd-and-cpd">How to install PMD and CPD</h2>
<h3 id="requirements">Requirements</h3>
<ul>
<li>
<p><a href="http://www.oracle.com/technetwork/java/javase/downloads/index.html">Java JRE</a>,
OpenJDK from <a href="https://www.azul.com/downloads/zulu-community/">Azul</a>
or <a href="https://adoptopenjdk.net/">AdoptOpenJDK</a> 1.7 or higher.</p>
<p><strong>Note:</strong> For analyzing Apex, JavaScript, Scala or VisualForce or running the <a href="pmd_userdocs_extending_designer_reference.html">Designer</a>
at least Java 8 is required.</p>
</li>
<li>
<p>A zip archiver, e.g.:</p>
<ul>
<li>For Windows: <a href="http://winzip.com">Winzip</a> or the free <a href="http://www.7-zip.org/">7-zip</a></li>
<li>For Linux / Unix: <a href="http://infozip.sourceforge.net/">InfoZip</a></li>
</ul>
</li>
</ul>
<div class="alert alert-info" role="alert"><i class="fa fa-info-circle"></i> <b>Note:</b> For executing the Designer (./run.sh designer) using <a href="http://jdk.java.net">OpenJDK</a> or Java 11, you need additionally <a href="http://jdk.java.net">OpenJFX</a>. Download it, extract it and set the environment variable JAVAFX_HOME.</div>
<h3 id="installation">Installation</h3>
<p>PMD is distributed as a zip archive, which includes both <a href="#running-pmd-via-command-line">PMD</a> and <a href="pmd_userdocs_cpd.html">CPD</a>.
You can download the latest binary distribution from <a href="https://github.com/pmd/pmd/releases">the github releases page</a>.</p>
<p>Unzip it into any directory, optionally add the <code class="language-plaintext highlighter-rouge">bin</code> subdirectory in your <code class="language-plaintext highlighter-rouge">PATH</code>, and youre good to go!</p>
<h2 id="running-pmd-via-command-line">Running PMD via command line</h2>
<div class="bs-callout bs-callout-primary">PMD comes with several command line utilities, like CPD, the rule designer or PMD itself.
On Unix, you can run any of them using the script <code class="language-plaintext highlighter-rouge">run.sh</code>, located inside the <code class="language-plaintext highlighter-rouge">bin/</code>
directory of the PMD distribution. The first argument is the name of the utility you want
to execute (pmd, designer, …), e.g. PMD is launched via <code class="language-plaintext highlighter-rouge">run.sh pmd</code>. The rest of
the arguments are specific to the utility used.<br /><br />
On Windows, each utility has its own startup script, e.g. <code class="language-plaintext highlighter-rouge">pmd.bat</code>, <code class="language-plaintext highlighter-rouge">cpd.bat</code>.</div>
<p>The PMD command (<code class="language-plaintext highlighter-rouge">pmd.bat</code> or <code class="language-plaintext highlighter-rouge">run.sh pmd</code>) requires two options:</p>
<ul>
<li><code class="language-plaintext highlighter-rouge">-d &lt;path&gt;</code>: path to the sources to analyse. This can be a file name, a directory, or a jar or zip file containing the
sources.</li>
<li><code class="language-plaintext highlighter-rouge">-R &lt;path&gt;</code>: the ruleset file you want to use. PMD uses xml configuration files, called <em>rulesets</em>, which specify
which rules to execute on your sources. You can also run a single rule by referencing it using its <em>category</em> and
name (more details <a href="pmd_userdocs_making_rulesets.html#referencing-a-single-rule">here</a>). For example, you can check for unnecessary
modifiers on Java sources with <code class="language-plaintext highlighter-rouge">-R category/java/codestyle.xml/UnnecessaryModifier</code>.</li>
</ul>
<div class="alert alert-info" role="alert"><i class="fa fa-info-circle"></i> <b>Note:</b> At the moment the formerly provided rulesets (eg <code class="language-plaintext highlighter-rouge">rulesets/java/basic.xml</code>) are deprecated,
though you can still use them. PMD includes a quickstart ruleset for some languages (currently, Java)
as base configurations, which you can reference as e.g. <code class="language-plaintext highlighter-rouge">rulesets/java/quickstart.xml</code>. Youre strongly
encouraged to <a href="pmd_userdocs_making_rulesets.html">create your own ruleset</a> from the start though.</div>
<p>Additionally, the following options, are specified most of the time even though theyre not required:</p>
<ul>
<li><code class="language-plaintext highlighter-rouge">-f &lt;format&gt;</code>: report format. PMD supports many report formats out of the box. You may want to start with the basic
<code class="language-plaintext highlighter-rouge">text</code> format (default) or <code class="language-plaintext highlighter-rouge">xml</code> format. The supported formats are <a href="pmd_userdocs_cli_reference.html#available-report-formats">documented here</a>.</li>
<li><code class="language-plaintext highlighter-rouge">--aux-classpath &lt;classpath&gt;</code>: class path containing the compiled class files of the analysed Java sources, if any.
Setting this up correctly allows PMD to do much deeper analysis using reflection. Some rules, such as <a href="pmd_rules_java_bestpractices.html#missingoverride">MissingOverride</a>,
require it to function properly.</li>
</ul>
<div class="alert alert-success" role="alert"><i class="fa fa-check-square-o"></i> <b>Tip:</b> A full CLI reference, including report formats, is available under <a href="pmd_userdocs_cli_reference.html">PMD CLI Reference</a></div>
<h3 id="sample-usage">Sample usage</h3>
<p>The following shows a sample run of PMD with the <code class="language-plaintext highlighter-rouge">text</code> format:</p>
<div class="text-left">
<ul class="nav nav-tabs" role="tablist">
<li role="presentation" class="active"><a href="#linux" aria-controls="linux / unix" role="tab" data-toggle="tab">Linux / Unix</a></li>
<li role="presentation"><a href="#windows" aria-controls="windows" role="tab" data-toggle="tab">Windows</a></li>
</ul>
<div class="tab-content">
<div role="tabpanel" class="tab-pane active" id="linux">
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="gp">~ $ </span><span class="s2">cd</span> ~/bin/pmd-bin-6.50.0-SNAPSHOT/bin
<span class="gp">~/.../bin $ </span><span class="s2">./run.sh</span> pmd -d ../../../src/main/java/ -f text -R rulesets/java/quickstart.xml
.../src/main/java/com/me/RuleSet.java:123 These nested if statements could be combined
.../src/main/java/com/me/RuleSet.java:231 Useless parentheses.
.../src/main/java/com/me/RuleSet.java:232 Useless parentheses.
.../src/main/java/com/me/RuleSet.java:357 These nested if statements could be combined
.../src/main/java/com/me/RuleSetWriter.java:66 Avoid empty catch blocks</code></pre></figure>
</div>
<div role="tabpanel" class="tab-pane" id="windows">
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="gp">C:\ &gt; </span><span class="s2">cd</span> C:\pmd-bin-6.50.0-SNAPSHOT\bin
<span class="gp">C:\...\bin &gt; </span><span class="s2">.\pmd.bat</span> -d ..\..\src\main\java\ -f text -R rulesets/java/quickstart.xml
.../src/main/java/com/me/RuleSet.java:123 These nested if statements could be combined
.../src/main/java/com/me/RuleSet.java:231 Useless parentheses.
.../src/main/java/com/me/RuleSet.java:232 Useless parentheses.
.../src/main/java/com/me/RuleSet.java:357 These nested if statements could be combined
.../src/main/java/com/me/RuleSetWriter.java:66 Avoid empty catch blocks</code></pre></figure>
</div>
</div>
</div>
<h2 id="running-cpd-via-command-line">Running CPD via command line</h2>
<div class="alert alert-info" role="alert"><i class="fa fa-info-circle"></i> <b>Note:</b> CPD supports Java, JSP, C, C++, C#, Fortran and PHP source code, among other languages.
For the full list, see <a href="pmd_userdocs_cpd.html#supported-languages">Supported Languages</a>.</div>
<p>Like for PMD, CPD is started on Unix by <code class="language-plaintext highlighter-rouge">run.sh cpd</code> and on Windows by <code class="language-plaintext highlighter-rouge">cpd.bat</code>.</p>
<p>There are two required parameters:</p>
<ul>
<li><code class="language-plaintext highlighter-rouge">--files &lt;path&gt;</code>: path to the sources to analyse. This can be a file name, a
directory or a jar or zip file containing the sources.</li>
<li><code class="language-plaintext highlighter-rouge">--minimum-tokens &lt;number&gt;</code>: the minimum token length which should be reported as a duplicate.</li>
</ul>
<div class="alert alert-success" role="alert"><i class="fa fa-check-square-o"></i> <b>Tip:</b> CPDs command-line reference, Ant task usage, and many examples are documented in the
<a href="pmd_userdocs_cpd.html">CPD documentation page</a></div>
<h3 id="sample-usage-1">Sample usage</h3>
<p>The following shows a sample run of CPD with the <code class="language-plaintext highlighter-rouge">text</code> format:</p>
<div class="text-left">
<ul class="nav nav-tabs" role="tablist">
<li role="presentation" class="active"><a href="#cpd-linux" aria-controls="linux / unix" role="tab" data-toggle="tab">Linux / Unix</a></li>
<li role="presentation"><a href="#cpd-windows" aria-controls="windows" role="tab" data-toggle="tab">Windows</a></li>
</ul>
<div class="tab-content">
<div role="tabpanel" class="tab-pane active" id="cpd-linux">
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="gp">~ $ </span><span class="s2">cd</span> ~/bin/pmd-bin-6.50.0-SNAPSHOT/bin
<span class="gp">~/.../bin $ </span><span class="s2">./run.sh</span> cpd --minimum-tokens 100 --files /home/me/src
Found a 7 line (110 tokens) duplication in the following files:
Starting at line 579 of /home/me/src/test/java/foo/FooTypeTest.java
Starting at line 586 of /home/me/src/test/java/foo/FooTypeTest.java
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());</code></pre></figure>
</div>
<div role="tabpanel" class="tab-pane" id="cpd-windows">
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="gp">C:\ &gt; </span><span class="s2">cd</span> C:\pmd-bin-6.50.0-SNAPSHOT\bin
<span class="gp">C:\...\bin &gt; </span><span class="s2">.\cpd.bat</span> --minimum-tokens 100 --files c:\temp\src
Found a 7 line (110 tokens) duplication in the following files:
Starting at line 579 of c:\temp\src\test\java\foo\FooTypeTest.java
Starting at line 586 of c:\temp\src\test\java\foo\FooTypeTest.java
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());
assertEquals(Boolean.TYPE, expressions.get(index++).getType());</code></pre></figure>
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