You should be able to use your OS scheduler to fire off (directly or as part of a batch) a
Duplicati.CommandLine.exe restore .... call.
In theory you could have a monthly batch file that restores, compares, notifies a different chunk of the backup each month.
Building the command line might take a little effort (I really wish there was an “Export to Commandline” option on the Commandline page!) but I don’t see why it couldn’t be done.
You can find a “full” export of the build in Duplicati.CommandLine.exe (for 18.104.22.168 beta) in this post:
But I’m pretty sure you’ll only care about this:
Duplicati.CommandLine.exe help restore
Usage: restore <storage-URL> ["<filename>"] [<options>]
Restores <filename> to its original destination. If <filename> exists
already, <filename> is changed to <filename-timestamp.extension>. To
restore all files use "*" or leave empty.
Overwrites existing files.
Restores files to <restore-path> instead of their original destination.
Top folders are removed if possible.
Restore files that are older than the specified time.
Restore files from a specific backup.
And in case you care, here are the Test options:
Duplicati.CommandLine.exe help test
Usage: test <storage-URL> <samples> [<options>]
Verifies integrity of a backup. A random sample of dlist, dindex, dblock
files is downloaded, decrypted and the content is checked against recorded
size values and data hashes. <samples> specifies the number of samples to
be tested. If "all" is specified, all files in the backup will be tested.
This is a rolling check, i.e. when executed another time different samples
are verified than in the first run. A sample consists of 1 dlist, 1 dindex,
Checks samples from a specific time.
Checks samples from specific versions. Delimiters are , -
Checks the internal structure of each file instead of just verifying the