fssync 1.6-1.1 (armhf binary) in ubuntu hirsute

 fssync is a 1-way file-synchronization tool that tracks inodes and maintains a
 local database of files that are on the remote side, making it able to:
  - handle efficiently a huge number of dirs/files
  - detect renames/moves and hard-links
 .
 It aims at minimizing network traffic and synchronizing every detail of a file
 system:
  - all types of inode: file, dir, block/character/fifo, socket, symlink
  - preserve hard links
  - modification time, ownership/permission/ACL, extended attributes
  - sparse files
 .
 Other features:
  - it can be configured to exclude files from synchronization
  - fssync can be interrupted and resumed at any time, making it tolerant to
    random failures (e.g. network error)
  - algorithm to synchronize file content is designed to handle big files
    like VM images efficiently, by updating fixed-size modified blocks in-place
 .
 Main usage of fssync is to prevent data loss in case of hardware failure,
 where RAID1 is not possible (e.g. in laptops).
 .
 On Btrfs file systems, fssync is an useful alternative to `btrfs send` (and
 `receive`) commands, thanks to filtering capabilities. This can be combined
 with Btrfs snapshotting at destination side for a full backup solution.