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+% $Id: write18-quote.tex 16695 2010-01-13 01:18:02Z karl $
+% Public domain. Originally written 2009, Alexander Cherepanov.
+
+\catcode`\# = 12
+\def\cmd{" 2>&1 | echo badnews > pwned.txt #.gz"}
+
+% create this weirdly-named file.
+\catcode0 = 12
+\immediate\openout1 \cmd^^@
+\immediate\closeout1
+
+% write out a special referring to it.
+% if it exists when dvips is run, it will be executed with popen.
+\special{psfile=\cmd}
+\nopagenumbers
+\end