curl -L -O -C - https://updates.cdn-apple.com/2019/cert/061-41412-20191024-da84aefe-51e5-4548-99fb-b1f7e0a6455f/macosupdCombo10.14.6.dmg

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
 31 3212M   31 1024M    0     0  46985      0 19:54:53  6:20:52 13:34:01 38235
curl: (18) transfer closed with 2294788147 bytes remaining to read

$ ls -lat
-rw-r--r--     1 user  user  1073741824 Nov  6 03:26 macosupdCombo10.14.6.dmg

请注意，我不想丢失19:54:53中下载的内容