root ~ # file -s /dev/ad4s1d
/dev/ad4s1d: Unix Fast File system [v2] (little-endian) last mounted on /var, last written at Wed Oct 31 15:11:15 2012, clean flag 0, readonly flag 0, number of blocks 3126272, number of data blocks 3025591, number of cylinder groups 34, block size 16384, fragment size 2048, average file size 16384, average number of files in dir 64, pending blocks to free 276, pending inodes to free 7, system-wide uuid 0, minimum percentage of free blocks 8, TIME optimization
/dev/ad4s1d: Unix Fast File system [v2] (little-endian) last mounted on /var, last written at Wed Oct 31 15:11:15 2012, clean flag 0, readonly flag 0, number of blocks 3126272, number of data blocks 3025591, number of cylinder groups 34, block size 16384, fragment size 2048, average file size 16384, average number of files in dir 64, pending blocks to free 276, pending inodes to free 7, system-wide uuid 0, minimum percentage of free blocks 8, TIME optimization