Jehanne Operating System http://jehanne.h--k.it
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#!/cmd/rc
sed '/^$/{s//echo/; b}; /^#! /{s/#! //g; b}; /^#! /!{s/''/''''/g; s/\$\(#\|"\)\?[$a-zA-Z0-9_]\+\(([$a-zA-Z0-9#_]\+)\)\?[\^]\?/''&''/g; s/^/echo ''/ ; s/$/''/; b}'