If this helps, in old days I used to use cpio for a similar thing.
I do not want to spam you with my whole script, but willing to share if you
want. I think you will get the hang of it by the following snippet. (Get
yourself man-knowledge about the -i -o -p mechanism of cpio and the use of dd.)
This was in the good (?) old days when rsh worked as simple (and insecure) as
this. In modern *n*x like systems rsh is a link to ssh, which is (besides being
entirely wrong!) a pitfall to finding correct cli arguments. But it is
manageable if you are aware of it.
CPIOP = parameter arguments to cpio
/tmp/$$.f = list of files
Snippet:
case $CPIOP in
-i*) rsh -l $RUSER $RHOST dd if=$RDEV | cpio $CPIOP
;;
-o*)
cpio $CPIOP </tmp/$$.f | rsh -l $RUSER $RHOST dd of=$RDEV
;;
-p)
cpio -ocv </tmp/$$.f | rsh -l $RUSER $RHOST cpio -icmd
;;
*) echo argument mismatch $CPIOP >&2
exit
;;
esac
Hope this gives an idea
Hardy
Am 10.02.23 um 10:31 schrieb Chris Green via rsync:
I have searched a little and read the man page but I can't really find
a good definite answer to this.
Can rsync write to a FIFO? Obviously one needs the --inplace to do
this, does one also need --write-devices?
It would be very handy if one can do this, to use as a simple message
passing mechanism. Write something to a file on system A and rsync it
to a FIFO on system B where there is a simple script reading the FIFO.
The script gets the contents of the file every time it's written.
(this is all within a LAN behind a reasonably secure firewall)
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