nix-configs

Personal NixOS and home-manager configuration files
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backup-local.nix (948B)

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