On 12/12/18 9:17 PM, Richard wrote: > >> Date: Wednesday, December 12, 2018 20:25:48 -0500 >> From: Robert Moskowitz <rgm at htt-consult.com> >> >> >> On 12/12/18 7:11 PM, Leroy Tennison wrote: >>> Does your version of CentOS have the @reboot crontab option? If >>> it does this is probably easier unless you want to learn how to >>> write systemd files. >> CentOS 7.6. I will have to google @reboot... > > see: man -S5 crontab -- the "extensions" section. > OK.... I have had problems in the past with crontab parsing a command. Would I use: @reboot root echo none | tee /sys/class/leds/blue\:heartbeat/trigger ? Or do I have to make a script and run that? thanks