I have not looked into module options or temp files – I haven’t learned these yet.
My bash script does write to the /sys/class/… trigger to set or clear an LED. I don’t understand how system-tmpfile helps with a periodic operation. But I will look into it. Thanks Larry Harmon Larry Harmon | Sr. Embedded Engineer Turning Technologies | 255 West Federal Street | Youngstown, OH 44503 Direct: 330-531-7664 | Main: 330-746-3015 | Toll Free: 866-746-3015 | SKYPE larry.harmon54 [email protected]<mailto:[email protected]> | www.TurningTechnologies.com<http://www.turningtechnologies.com/> [cid:[email protected]] Stay Connected - @TurningTech <https://twitter.com/turningtech> · Facebook<http://www.facebook.com/#!/pages/Turning-Technologies/104796086230111?ref=ts> This e-mail message, including any attached files, is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient or you wish to discontinue receiving any future e-mails from the vendor featured in this message, please send an e-mail request<mailto:[email protected]?subject=unsubscribe>. From: systemd-devel [mailto:[email protected]] On Behalf Of "Jóhann B. Guðmundsson" Sent: Monday, December 29, 2014 6:46 PM To: [email protected] Subject: Re: [systemd-devel] simple service shell script filling journal On 12/29/2014 08:16 PM, Larry Harmon wrote: I am using a simple shell script, started by system, to set LEDs on a Marvell Armada 370 plug. The script uses a while loop with a "sleep 30" line Hmm somehow using a script ( and a type service unit ) to accomplish this does not sound right to me and I'm pretty sure greg k-h has the correct way of achieving this but did you try fiddling with module options /etc/modprobe.d/<module>.conf options foo bar Or find the trigger cat /sys/class/leds/<foo>-led/trigger Create an tmpfile /etc/tmpfiles.d/<foo>-led.conf w /sys/class/leds/<foo>-led/trigger - - - - <the trigger to be used> systemd-tmpfiles --create <foo>-led.conf And try that instead of writing a script to accomplish this? ( This might be a bug in the kernel/driver if this is not working correctly or if you cant "tweak it" it with something like the above ) JBG
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