On 09/03/19 at 00:28, Arnt Karlsen wrote: > On Fri, 8 Mar 2019 22:56:36 +0100, Alessandro wrote in message > <93850f1a-3feb-adc9-1cd0-8ca8736fc...@linux.com>: > >> On 08/03/19 at 18:38, Arnt Karlsen wrote: >>> ..my /etc/cron.d/machine-id: >>> PATH=/bin:/usr/bin:/sbin:/usr/sbin >>> >>> # ..a new /etc/machine-id every minute... ;o) >>> * * * * * root date |md5sum |cut -d" " -f-1 >/etc/machine-id |tee >>> >/dev/null 2>&1 >> >> What is tee doing there? > ..allows logging the generated IDs with e.g. > " |tee >>/var/log/machine-IDs ", some people > might need to do that.
I see. I would leave logging to it's specific command, though: echo $RANDOM | md5sum | cut -c 1-32 > /etc/machine-id && logger -p local1.info '/etc/machine randomly regenerated' || logger -p local1.err 'Random regeneration of /etc/machine failed' But this is just a matter of personal choice. > ..both valid improvements, me, I might go: " * * * * * root \ > fortune &&date |md5sum |cut -d" " -f-1 >/etc/machine-id |tee \ > >/dev/null 2>&1 " to keep this lightweight in my end and not > in the other end. :o) The use of fortune as a RNG is telling of the number of gray hair you must have! 😀 -- Alessandro Selli <alessandrose...@linux.com> VOIP SIP: dhatarat...@ekiga.net Chiave firma e cifratura PGP/GPG signing and encoding key: BA651E4050DDFC31E17384BABCE7BD1A1B0DF2AE
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