which?
$ which which
/usr/bin/which
$ which $(!!)
which $(which which)
/usr/bin/which
$ which $(!!)
which $(which $(which which))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which which)))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which $(which which))))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which $(which $(which which)))))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which $(which $(which $(which which))))))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which $(which $(which $(which $(which which)))))))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which $(which $(which $(which $(which $(which which))))))))
/usr/bin/which
$ which $(!!)
which $(which $(which $(which $(which $(which $(which $(which $(which $(which which)))))))))
/usr/bin/which
$