On Sat, Aug 09, 2014 at 10:21:33PM -0500, Neil Aggarwal wrote: > Hello all: > > I did a fresh install of CentOS 7 on a new machine. > > I wrote /usr/local/bin/firewall.stop to remove all the firewall rules. > It contains this code: > # Flush the rules > /usr/sbin/iptables -F You are missing a first line: #!/bin/sh > Aug 10 06:09:38 jamm23.jammconsulting.com systemd[2268]: Failed at step EXEC > spawning /usr/local/bin/firewall.start: Exec format error And that's the error expected. -- rgds Stephen