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Under linux, cd to the root of the web site and then -<br />

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grep -ri <a href="http://.*_" rel="ugc">http://.*_</a>
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This will deliver a list of the files and the links causing them.
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sharingsunshine

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this is the solution /product/[a-zA-Z0-9]+_(.+?)/?"<br><br>I tried the grep but it wasn't clean enough. &nbsp;Thanks to both of you for helping.
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I have a website that has old links using underscores and the new s/w uses dashes instead. &nbsp;I have redirects setup but Google won't index the pages that are using redirects. &nbsp;So I want to find all links that have underscores. &nbsp;Here is an example of the links:<br><br><pre><code class="code-1 nolinks" id="code-10-29218010-1"><span>&lt;p&gt;Herbs or supplements that help to relax the body will make a great difference if physical stress is involved, such as Nutri-Calm&lt;a href="/product/nutri_calm_100_tablets_p_525/"&gt;&lt;/a&gt;, &lt;a href="/product/magnesium-250-mg/"&gt;Magnesium&lt;/a&gt;, &lt;a href="/product/lobelia_100_capsules_p_420/"&gt;Lobelia&lt;/a&gt;, &lt;a href="/product/lavender_fine_aoc_100_pure_essential_oil_p_35/"&gt;Lavender Essential Oil&lt;/a&gt; or &lt;a href="/product/geranium-15-ml-100-pure-essential-oil/"&gt;Stress-J&lt;/a&gt;. &nbsp; &lt;a href="/product/tei-fu-essential-oil-blend-pocket-size/"&gt;Tei Fu&lt;/a&gt;&nbsp;</span>
</code></pre>I put this regex together but it is still catching url's with dashes.<br><pre><code class="code-1 nolinks" id="code-10-29218010-2"><span>/product/(.+?)([^-]|_)(.+?)"</span>
</code></pre>Please help me to fine tune the regex to find only those with underscores.
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I have a website that has old links using underscores and the new s/w uses dashes instead.  I have redirects setup but Google won't index the pages that are using redirects.  So I want to find all links that have underscores.  Here is an example of the links:
<p>Herbs or supplements that help to relax the body will make a great difference if physical stress is involved, such as Nutri-Calm<a href="/product/nutri_calm_100_tablets_p_525/"></a>, <a href="/product/magnesium-250-mg/">Magnesium</a>, <a href="/product/lobelia_100_capsules_p_420/">Lobelia</a>, <a href="/product/lavender_fine_aoc_100_pure_essential_oil_p_35/">Lavender Essential Oil</a> or <a href="/product/geranium-15-ml-100-pure-essential-oil/">Stress-J</a>.   <a href="/product/tei-fu-essential-oil-blend-pocket-size/">Tei Fu</a> 
I put this regex together but it is still catching url's with dashes.
/product/(.+?)([^-]|_)(.+?)"
Please help me to fine tune the regex to find only those with underscores.

Need Regex to find url's with underscores only

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.

Regular Expressions

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