add user to gruop apache ..

chgrp apache apachectl
% chmod 4510 apachectl
% chmod 4510 httpd

The execution order is important. If you swap the command execution order you will lose the setuid bit.

Now if we look at the file we see:

% ls -l apachectl
-r-s--x--- 1 root apache 32 May 13 21:52 apachectl

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