擅长:python、mysql、java
<p><strong>sed</strong>解决方案:</p>
<pre><code>sed -E 's/.*(silence_(start|end): |time=)([^[:space:]]+).*/\3/' file
</code></pre>
<ul>
<li><code>\3</code>-指向第三个带圆括号的<code>(...)</code>组</li>
</ul>
<p>输出:</p>
<pre><code>1.32515
1.88188
2.99698
3.42311
5.58311
6.13984
7.6729
00:00:09.12
</code></pre>