Here is my solution for finding the tall males driving the blue honda with the semi-known licencse plate. I found awk quite suitable.<p><pre><code>  awk &#x27;BEGIN {RS=&quot;\n\n&quot;; FS=&quot;\n&quot;} $1 ~ &#x2F;L337.*9$&#x2F; &amp;&amp; $2 ~ &#x2F;Honda&#x2F; &amp;&amp; $3 ~ &#x2F;Blue&#x2F; &amp;&amp; $5 ~ &#x2F;6&#x27;\&#x27;&#x27;&#x2F; {print $4}&#x27; vehicles | cut -d&#x27; &#x27; -f2,3
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Edit: And to find the intersection between the SkyMiles members and the members of the Museum of Bash History, I used fgrep:<p><pre><code>  grep -Fxf Delta_SkyMiles Museum_of_Bash_History</code></pre>