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authorjohannst <johannst@users.noreply.github.com>2024-11-07 22:05:24 +0000
committerjohannst <johannst@users.noreply.github.com>2024-11-07 22:05:24 +0000
commit76d0ea3113933da30c1251e8c8b7016a677dfa42 (patch)
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parenteeadf0599a4b8a92dc0f5475e011435e752feddb (diff)
downloadnotes-76d0ea3113933da30c1251e8c8b7016a677dfa42.tar.gz
notes-76d0ea3113933da30c1251e8c8b7016a677dfa42.zip
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+<!DOCTYPE HTML>
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+
+ <div id="content" class="content">
+ <main>
+ <h1 id="cut1"><a class="header" href="#cut1">cut(1)</a></h1>
+<pre><code class="language-sh"># Remove sections from each line of files(s).
+cut OPT FILE [FILE]
+ -d DELIM delimiter to tokenize
+ -f LIST field selector
+ -c LIST character selector
+</code></pre>
+<h2 id="example-only-selected-characters"><a class="header" href="#example-only-selected-characters">Example: only selected characters</a></h2>
+<pre><code class="language-sh">echo 'aa bb cc dd' | cut -c "1-4"
+# aa b
+
+# Inverted selection.
+echo 'aa bb cc dd' | cut --complement -c "1-4"
+# b cc dd
+</code></pre>
+<h2 id="example-only-selected-fields"><a class="header" href="#example-only-selected-fields">Example: only selected fields</a></h2>
+<p>Fields in <code>cut</code> are indexed starting from <code>1</code> rather than <code>0</code>.</p>
+<pre><code class="language-sh"># Fields 2 until 3.
+echo 'aa bb cc dd' | cut -d ' ' -f 2-3
+# bb cc
+
+# First field until the 2nd.
+echo 'aa bb cc dd' | cut -d ' ' -f -2
+# aa bb
+
+# Third field until the end.
+echo 'aa bb cc dd' | cut -d ' ' -f 3-
+# cc dd
+
+# If the number of tokens in a line is unkown but we want to remove the last 2
+# tokens we can use rev(1).
+echo 'aa bb cc dd' | rev | cut -d ' ' -f3- | rev
+# aa bb
+</code></pre>
+
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