The most pointless shell command you can concoct, based upon a often used shell command
Mine is the inverse of "print the kernel arguments you booted with on Linux":

cat /proc/cmdline
# turns into...
fgrep -x -f &lt;(awk -F\= 'BEGIN { RS = " "} ; {print $1"="}' &lt;/proc/cmdline)\
-v &lt;(curl 'https://www.kernel.org/doc/Documentation/kernel-parameters.txt' 
2&gt;/dev/null | awk '/\t+[a-z._]+=/ {print $1}' | tee test2) | tr '\n' ' ' &amp;&amp;
echo