-bash-3.2# diskutil ; df -H
Disk Utility Tool
Utility to manage local disks and volumes
Most options require root access to the device
Usage:  diskutil [quiet] <verb> <options>, where <verb> is as follows:
     list                  (List the partitions of a disk)
     info[rmation]         (Get information on a specific disk or partition)
     listFilesystems       (List file systems available for formatting)
     activity              (Continuous log of system-wide disk arbitration)
     u[n]mount             (Unmount a single volume)
     unmountDisk           (Unmount an entire disk (all volumes))
     eject                 (Eject a disk)
     mount                 (Mount a single volume)
     mountDisk             (Mount an entire disk (all mountable volumes))
     enableJournal         (Enable HFS+ journaling on a mounted HFS+ volume)
     disableJournal        (Disable HFS+ journaling on a mounted HFS+ volume)
     moveJournal           (Move the HFS+ journal onto another volume)
     enableOwnership       (Treat as exact User/Group IDs for a mounted volume)
     disableOwnership      (Ignore on-disk User/Group IDs for a mounted volume)
     rename[Volume]        (Rename a volume)
     verifyVolume          (Verify the file system data structures of a volume)
     repairVolume          (Repair the file system data structures of a volume)
     verifyDisk            (Verify the components of a partition map of a disk)
     repairDisk            (Repair the components of a partition map of a disk)
     eraseDisk             (Erase an existing disk, removing all volumes)
     eraseVolume           (Erase an existing volume)
     reformat              (Erase an existing volume with same name and type)
     eraseOptical          (Erase optical media (CD/RW, DVD/RW, etc.))
     zeroDisk              (Erase a disk, writing zeros to the media)
     randomDisk            (Erase a disk, writing random data to the media)
     secureErase           (Securely erase a disk or freespace on a volume)
     partitionDisk         ((re)Partition a disk, removing all volumes)
     resizeVolume          (Resize a volume, increasing or decreasing its size)
     splitPartition        (Split an existing partition into two or more)
     mergePartitions       (Combine two or more existing partitions into one)
     appleRAID <verb>      (Perform additional verbs related to AppleRAID)
     coreStorage <verb>    (Perform additional verbs related to CoreStorage)
diskutil <verb> with no options will provide help on that verb
Filesystem      Size   Used  Avail Capacity   iused    ifree %iused  Mounted on
/dev/disk1s1    2.0G   1.3G   715M    65%    316342   174624   64%   /
devfs           200k   200k     0B   100%       676        0  100%   /dev
/dev/disk3      5.2M   4.3M   918k    83%      1054      224   82%   /private/var/log
/dev/disk4      524k   147k   377k    29%        34       92   27%   /Volumes
/dev/disk5      524k   143k   381k    28%        33       93   26%   /private/var/tmp
/dev/disk6      524k   160k   365k    31%        37       89   29%   /private/var/run
/dev/disk7      524k   143k   381k    28%        33       93   26%   /System/Installation
/dev/disk8      524k   307k   217k    59%        73       53   58%   /private/var/db
/dev/disk9      6.3M   3.5M   2.8M    55%       842      692   55%   /private/var/folders
/dev/disk10     2.1M   2.1M     0B   100%       510        0  100%   /private/var/root/Library
/dev/disk12     524k   172k   352k    33%        40       86   32%   /Library/Preferences
/dev/disk13     524k   180k   344k    35%        42       84   33%   /Library/Preferences/SystemConfiguration
/dev/disk14     1.0M   180k   868k    18%        42      212   17%   /Library/Keychains
/dev/disk15     6.3M   176k   6.1M     3%        41     1493    3%   /private/var/tmp/RecoveryTemp
/dev/disk2      499G    92G   407G    19%  22352815 99443279   18%   /Volumes/Macintosh HD
/dev/disk16s3   1.0T   725G   275G    73% 176914943 67234549   72%   /Volumes/My Passport
-bash-3.2#