Hello again,
>From a private message,
> I modified your script slightly and it works for me.
Thanks.
The drive isn't formatted and has a UUID such as
2026-01-19-03-28-45-00. Shorter than a UUID for a file system.
After reading the reply I noticed that the UUID had changed. It's
revised periodically. After writing? Elapsed time is involved? I
don't understand in detail.
UUID isn't a time-invariant identity for the drive. Two external
drives here are the same model. Serial number might identify.
Revised the code listed yesterday. Now similar to this.
printf "destination is the serial number of a LaCie HDD connected by USB.\n";
destination="10000E000D959403";
printf 'destination=%s\n' "$destination";
if ! lsblk -o SERIAL | grep -F -- "$destination" > /dev/null ;
then
printf "destination device not connected ";
printf "or the serial number is wrong. Aborting.\n";
else
printf "destination device is connected.\n"
dev= lsblk --nodeps -o name,serial | grep -F -- "$destination" | cut -d ' '
-f1 ;
printf 'dev=%s is ready to receive backup.\n' "$dev";
printf "Press any key to continue.\n";
read -n 1 c;
FTH;
fi;
OK in a simple test. Suggestions always welcome. Something may be
more efficient than the long pipeline.
lsblk --nodeps -o name,serial | grep -F -- "$destination" | cut -d ' ' -f1
As happens too often, I was looking in the wrong place. Thanks for
the reply.
Thx, ... P.
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