git-svn-id: https://jules.scsys.co.uk/repository/shadowcat-code/scratchpad/matthewt/sig/lib@1986
8a6f57db-631f-0410-b083-dc7c4259d016
invoke system() when the user supplies possibly evil shell code
< triddle> if (!evil) { handle_as_if_evil() }
else { handle_as_not_evil() } //winning
+%
+< tommy> I think everybody's read the news that the vast majority of
+ dockerhub official images have serious unpatched vulnerabilities
+ and some actually contain viruses...to which the world IT
+ reacted: neat! MOAR CLOUDZ