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<h1 itemprop="name" class="fs-headline1 ow-break-word mb8 flex--item fl1"><a href="/questions/16778667/how-to-use-sed-to-find-and-replace-url-strings-with-the-character-in-the-tar" class="question-hyperlink">How to use SED to find and replace URL strings with the &quot;/&quot; character in the targeted strings? [duplicate]</a></h1>
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<a href="/questions/14687725/trying-to-escape-a-for-sed-on-ubuntu" dir="ltr">Trying to escape a / for sed on ubuntu</a>
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<p>I'm attempting to use SED through OS X Terminal to perform a find and replace.</p>
<p>Imagine I have this string littered throughout the text file: <a href="http://www.find.com/page" rel="noreferrer">http://www.find.com/page</a></p>
<p>And I want to replace it with this string: <a href="http://www.replace.com/page" rel="noreferrer">http://www.replace.com/page</a></p>
<p>I'm having trouble because I'm not sure how to properly escape or use the "/" character in my strings. For example if I simply wanted to find "cat" and replace with "dog" I've found the following command that works perfectly:</p>
<pre><code>sed -i '' 's/cat/dog/g' file.txt
</code></pre>
<p>Does anyone have any ideas on how to achieve the same functionality only instead of cat and dog have strings or URLs that container the "/" character? I tried many different ways of escaping the "/" characters but then it seems as if SED can no longer "find" the string and it doesn't perform any find &amp; replace actions.</p>
<p>Any help or tips are greatly appreciated.</p>
<p>Thanks!</p>
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<p><code>/</code> is not <em>the</em> delimiter in <code>sed</code> commands, it's just one of the possible ones. For this example, you can for example use <code>,</code> instead since it does not conflict with your strings;</p>
<pre><code>echo 'I think http://www.find.com/page is my favorite' |
sed 's,http://www.find.com/page,http://www.replace.com/page,g'
</code></pre>
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answered <span title='2013-05-27 18:31:56Z' class='relativetime'>May 27, 2013 at 18:31</span>
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<p><code>sed</code> can take whatever follows the "s" as the separator. Since you are working with <code>URL</code> it is a good practice to use a different delimiter other than <code>/</code> to not confuse <code>sed</code> when your substitution ends and replacement begins. </p>
<p>However, having said that you can definitely use <code>/</code> if you wish too. You just need to escape the literal <code>/</code>.</p>
<p>So, you can either do:</p>
<pre><code>sed 's/http:\/\/www.find.com\/page/http:\/\/www.replace.com\/page/g' input_file
</code></pre>
<p>or use a different delimiter to avoid making your cryptic sed more cryptic. </p>
<pre><code>sed 's#http://www.find.com/page#http://www.replace.com/page#g' input_file
</code></pre>
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answered <span title='2013-05-27 18:43:29Z' class='relativetime'>May 27, 2013 at 18:43</span>
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<span class="comment-copy">Using this approach, any reason why the following only outputs the file without any changes? <code>sed &#39;s#:0.0.1#:new-build-number#g&#39; some.yaml</code>. 1. The change does not occur. 2. I don&#39;t want the file printed, just updated.</span>
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&ndash;&nbsp;<a href="/users/1530814/idan-adar"
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<span class="comment-date" dir="ltr"><span title='2017-04-26 04:14:03Z, License: CC BY-SA 3.0' class='relativetime-clean'>Apr 26, 2017 at 4:14</span></span>
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<span class="comment-copy">The space character works well as a <code>sed</code> delimiter when processing URLs. It&#39;s visually clean and will never occur in a properly-formatted (i.e., escaped) URL.</span>
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&ndash;&nbsp;<a href="/users/2926436/patrick-dark"
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<span class="comment-date" dir="ltr"><span title='2019-06-27 23:40:58Z, License: CC BY-SA 4.0' class='relativetime-clean'>Jun 27, 2019 at 23:40</span></span>
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<span class="comment-copy">I had to use <code>sed -i</code> to make it work. Why doesn&#39;t it work without the <code>-i</code>? I read that <code>-i[SUFFIX], --in-place[=SUFFIX] edit files in place (makes backup if SUFFIX supplied)</code> What does it mean that it makes backup?</span>
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<span class="comment-date" dir="ltr"><span title='2021-02-09 12:53:14Z, License: CC BY-SA 4.0' class='relativetime-clean'>Feb 9, 2021 at 12:53</span></span>
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