This example shows the iostat command printing information about disk usage on my Ubuntu system. [email protected]:~$ iostat Linux 4.6.0-rc1-jason (jason-desktop) 01/05/16 _x86_64_ (4 CPU)   avg-cpu: %user %nice %system %iowait %steal %idle 2.50 0.43 1.28 24.37 0.00 71.42   Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 1.49 147.22 0.00 64455 0 sdb 0.41 14.30 0.00 …