nix-configs

Personal NixOS and home-manager configuration files
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backup-local.nix (957B)

      1 {
      2   pkgs,
      3   domain,
      4   ...
      5 }: let
      6   backup-local = pkgs.writeShellScriptBin "backup-local" ''
      7     # variables
      8     mount_points=("/mnt/" "/usb/")
      9     report_file=("''${mount_points[1]}reports/$(date +"%Y-%m-%d_%H-%M").log")
     10     # checks
     11     for dir in "''${mount_points[@]}"; do
     12       if ! findmnt -r "$dir" > /dev/null; then
     13         echo "Error: $dir is not mounted. Exiting." >&2
     14         exit 1
     15       fi
     16     done
     17     if [ ! -w "''${mount_points[1]}" ]; then
     18       echo "Error: No write permissions for destination. Exiting." >&2
     19       exit 1
     20     fi
     21     printf "Mirroring from %s to %s.\n" "''${mount_points[0]}" "''${mount_points[1]}"
     22     read -n1 -r -p "Press any key to begin..." key
     23     # process
     24     mkdir -p "$(dirname "$report_file")"
     25     ${pkgs.rsync}/bin/rsync -avhP --delete --exclude=lost+found/ --exclude=reports/ "''${mount_points[0]}" "''${mount_points[1]}" 2>&1 | tee "$report_file"
     26   '';
     27 in {
     28   environment.systemPackages = [backup-local];
     29 }