$ rpm -q coreutils # CentOS7.x coreutils-8.22-24.el7.x86_64 $ sudo dd if=./ubuntu-20.04-desktop-amd64.iso of=/dev/sdb bs=1k status=progress 2714452992 バイト (2.7 GB) コピーされました, 1017.815421 s, 2.7 MB/s See also ⟦monitoring - How do you monitor the progress of dd? - Ask Ubuntu⟧ https://askubuntu.com/questions/215505/how-do-you-monitor-the-progress-of-dd ⟦linux - How to determine the best byte size for