George N. White III wrote: > On Fri, 15 May 2020 at 18:41, Patrick O'Callaghan <pocallag...@gmail.com> > wrote: > >> On Fri, 2020-05-15 at 22:35 +0100, Patrick O'Callaghan wrote: >>>> echo check > /sys/block/md127/md/sync_action >> >> That's giving "permission denied" even with sudo, and with setenforce >> set to 'off'. >> > > This can happend if you run : > > $ sudo echo check > /sys/block/md127/md/sync_action > > which fails because redirection is done by the shell before the > sudo command runs. Use: > > $ sudo bash -c "echo check > /sys/block/md127/md/sync_action"
Or yet another way (just one more of many, I'm sure):
$ echo check | sudo tee /sys/block/md127/md/sync_action
Anyway, sorry to pipe up with nothing directly related to
the more important issue at hand. I just enjoy learning
different ways to tackle various tasks in the shell. I've
probably learned more of them from short tangents like this
than anywhere else. :)
Best of luck getting the array back in solid shape Patrick!
--
Todd
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