osf1 man page for dumpfs

dumpfs(8)						      System Manager's Manual							 dumpfs(8)

NAME
       dumpfs - Dump UFS file system information

SYNOPSIS
       /usr/sbin/dumpfs filesystem ... | device

DESCRIPTION
       The  dumpfs  command prints out the super block and cylinder group information for the specified UFS file system(s) or special device.  The
       listing is very long and detailed.  This command is useful for getting information about the file system block size and minimum free  space
       percentage, for example.  If the file system is mounted, you must specify the raw device.  The following is an example of device entries in
       an /etc/fstab file: /dev/disk/dsk8a   /	     ufs  rw  1 1 /dev/disk/dsk8g   /	    ufs  rw  1 2 /dev/disk/dsk8b   /	   ufs	sw  1 2 To
       see the information on the /usr file system (which is mounted), enter the following command:

       dumpfs /dev/rdisk/dsk8g

       The dumpfs command does not report information on the AdvFS file system.

FILES
       Specifies the command path.

RELATED INFORMATION
       Commands:  fsck(8), newfs(8), tunefs(8)

       Files:  disktab(4) delim off

																	 dumpfs(8)