こんばんは。ありがとうございます

> ２秒毎に動的にリスト表示が変わるので誤認を防げる

誤認を防ぐの意味が、今ひとつわからないので、簡略化のため　$ sudo timeshift --delete-all
します

Every 2.0s: sudo btrfs sub list / kyo: Thu Dec 2 21:45:25 2021

ID 4419 gen 312622 top level 5 path timeshift-btrfs/snapshots/2021-11-29_23-42-2
9/@home
ID 4420 gen 312623 top level 5 path timeshift-btrfs/snapshots/2021-11-29_23-42-2
9/@
ID 4433 gen 312625 top level 5 path timeshift-btrfs/snapshots/2021-12-02_20-56-5
8/@home
ID 4434 gen 312625 top level 5 path timeshift-btrfs/snapshots/2021-12-02_20-56-5
8/@
ID 4457 gen 312724 top level 5 path @home
ID 4458 gen 312724 top level 5 path @
ID 4461 gen 312636 top level 5 path timeshift-btrfs/snapshots/2021-12-02_20-59-1
8/@
ID 4462 gen 312637 top level 5 path timeshift-btrfs/snapshots/2021-12-02_20-59-1
8/@home
ID 4463 gen 312644 top level 5 path timeshift-btrfs/snapshots/2021-12-02_21-00-4
9/@
ID 4464 gen 312645 top level 5 path timeshift-btrfs/snapshots/2021-12-02_21-00-4
9/@home
ID 4465 gen 312655 top level 5 path timeshift-btrfs/snapshots/2021-12-02_21-04-4
9/@
ID 4466 gen 312656 top level 5 path timeshift-btrfs/snapshots/2021-12-02_21-04-4
9/@home