On 12/13/18 8:17 AM, Jonathan Billings wrote: > On Wed, Dec 12, 2018 at 09:43:56PM -0500, Robert Moskowitz wrote: >> 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? > Since this is a crontab, you can use normal shell redirection: > > @reboot root echo none > /sys/class/leds/blue\:heartbeat/trigger > > in a file in /etc/cron.d/ > > The 'echo foo | sudo tee' thing is what you do for people who are > using sudo to echo output into a file -- so often people think they > can do 'sudo echo none > /some/path' and will be surprised it doesn't > work. Thanks. This is my first encounter with 'tee'. I guess because I rarely use sudo, and work in su if I need to do root things. > I still think it makes sense to create it as a systemd unit. > Seems the better, long-term way to go, but right now I don't have time to learn enough about making systemd unit files. Thanks