Duplicati from the CLI

backup

Duplicati.CommandLine.exe backup \
  --passphrase=$PASSPHRASE \
  --aws_access_key_id=$AWS_KEY \
  --aws_secret_access_key=$AWS_SECRET \
  --s3-location-constraint=$LOC \
  --aes-encryption-dont-allow-fallback=true \
  $DIR \
  s3://$S3_BUCKET/$DIR
  
# Obviously the S3 DIR target can be tweaked; this is just a simple example.
# If RRS is acceptable, add $S3_RRS in the options list.

environment

$LOCATION='<location>'                          # EU, for example.
$PASSPHRASE='<passphrase>'
$AWS_KEY='<access_key>'
$AWS_SECRET='<secret_key>'
$S3_BUCKET='<bucket_name>'
$S3_RRS='--s3-use-rrs'                          # use reduced replication for backup
$DEBUG='--debug-output --log-level=Profiling'   # verbosity to the max!!!1one
$DIR='<path>'                                   # /Users/username/Documents/, for example.

restore

Duplicati.CommandLine.exe restore \
  --passphrase=$PASSPHRASE \
  --aws_access_key_id=$AWS_KEY \
  --aws_secret_access_key=$AWS_SECRET \
  s3://$S3_BUCKET/$DIR \
  $DIR