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echo: rberrypi
to: HENRI DERKSEN
from: MARK LEWIS
date: 2018-05-14 10:33:00
subject: Lifetime of SD cards runn

 On 2018 May 13 12:07:00, you wrote to me:

 ml>> on linux, one can disable what is known as "atime", one of the three
 ml>> time stamps, which will save a lot of write cycles...

 HD> can you tell me wich three time stamps there are?,

of course i can...

oh wait, you actually want me to?

  atime = last data access timestamp         (ls -lu)
  mtime = last data modification timestamp   (ls -l )
  ctime = last file status change timestamp  (ls -lc)


eg:
~/FTN/msgBase/fido/backbone/r$ stat --printf '%n\nmtime: %y\nctime: %z\natime:
%x\ncrtime: %w\n' rberrypi.*
rberrypi.jdt
mtime: 2018-05-14 10:20:05.085918845 -0400
ctime: 2018-05-14 10:20:05.085918845 -0400
atime: 2018-05-14 10:20:05.993923284 -0400
crtime: -

rberrypi.jdx
mtime: 2018-05-14 10:20:05.085918845 -0400
ctime: 2018-05-14 10:20:05.085918845 -0400
atime: 2018-05-14 10:20:05.993923284 -0400
crtime: -

rberrypi.jhr
mtime: 2018-05-14 10:23:50.207019406 -0400
ctime: 2018-05-14 10:23:50.207019406 -0400
atime: 2018-05-14 10:24:05.191092660 -0400
crtime: -

rberrypi.jlr
mtime: 2018-05-13 11:58:38.524440063 -0400
ctime: 2018-05-13 11:58:38.524440063 -0400
atime: 2018-05-13 11:58:39.720445910 -0400
crtime: -


 HD> and how I can switch of that "atime" one in Raspbian Linux? thanks.

others have already mentioned the "noatime" switch and where it belongs...

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin' it
wrong...
... Chopsticks: You don't sew with a fork so why eat with knitting needles.
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