snapper binary package in Ubuntu Bionic amd64

 Snapper is a tool for Linux filesystem snapshot management. Apart from the
 obvious creation and deletion of snapshots, it can compare snapshots and revert
 differences between snapshots. In simple terms, this allows root and non-root
 users to view older versions of files and revert changes.
 .
 The features include:
   * Manually create snapshots
   * Automatically create snapshots, e.g. when using a package manager
   * Automatically create timeline of snapshots
   * Show and revert changes between snapshots
   * Works with btrfs and thin-provisioned LVM volumes
   * Supports Access Control Lists and Extended Attributes
   * Automatic cleanup of old snapshots
   * Command line interface
   * D-Bus interface
   * PAM module to create snapshots during login and logout (libpam-snapper)

Source package