擅长:python、mysql、java
<p>试试看</p>
<pre><code>grep -f file1.txt file2.txt
</code></pre>
<p>来自man:</p>
<blockquote>
<p>-f FILE, --file=FILE
Obtain patterns from FILE, one per line. The empty file contains zero patterns, and therefore matches nothing. (-f is
specified by POSIX.)</p>
</blockquote>