Hi,
A xorriso dry-run analogous to rsync -n?
You could use command -rollback_end to refrain from writing:
xorriso ...the.desired.commands... -rollback_end
This will perform the commands but then just end the program run
instead of writing the result and thus reading all the content of
the files which were mapped into the ISO.
Or you could use -outdev stdio:/dev/null to perform writing with
no stored result:
xorriso -outdev stdio:/dev/null ...the.desired.commands...
This will perform all commands and the write stage, but the resulting
ISO filesystem will not be stored on disk or optical medium.
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The prefix "stdio:" is needed with /dev/null to tell xorriso that you
did not mistype a /dev/sr* drive address. I have a classification of my
system disks in startup file /etc/opt/xorriso/rc :
-drive_class banned '/dev/sda*'
-drive_class banned '/dev/sdb*'
-drive_class harmless /dev/null
This protects /dev/sda and /dev/sdb plus their partition devices from
being used as xorriso drives.
The drive address /dev/null is declared usable without prefix "stdio:".
Default setting is
-drive_class caution /dev
which stays in effect as last fallback rule for drive addresses which
do not match above class definitions. These addresses will only be
accepted if prepended by "stdio:".
To remove the default "caution" classification, perform
-drive_class clear_list caution
Have a nice day :)
Thomas
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