/>sudo dd if=/dev/rdisk0 of=/dev/null bs=1024k count=1024 Password: 1024+0 records in 1024+0 records out 1073741824 bytes transferred in 4.382830 secs (244988249 bytes/sec)
如果你要測寫入速度的話,則可以用以下的指令,這樣它會在目前目錄下建立一個testfile的檔案。
/>dd if=/dev/zero of=testfile bs=1024k count=1024 1024+0 records in 1024+0 records out 1073741824 bytes transferred in 18.562447 secs (57844842 bytes/sec)