Sorry, that should be: $ env X='() { (a)=>\' bash -c "echo date"; cat echo The previous version obviously only works if your sh is bash, obviously. -mjc On Thu, Sep 25, 2014 at 12:25 PM, Micah Cowan <micah at addictivecode.org> wrote: > > $ env X='() { (a)=>\' sh -c "echo date"; cat echo >