1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)dumpfs.8 8.1 (Berkeley) 06/05/93 7.\" 8.Dd 9.Dt DUMPFS 8 10.Os BSD 4.2 11.Sh NAME 12.Nm dumpfs 13.Nd dump file system information 14.Sh SYNOPSIS 15.Nm dumpfs 16.Op Ar filesys No \&| Ar device 17.Sh DESCRIPTION 18.Nm Dumpfs 19prints out the super block and cylinder group information 20for the file system or special device specified. 21The listing is very long and detailed. This 22command is useful mostly for finding out certain file system 23information such as the file system block size and minimum 24free space percentage. 25.Sh SEE ALSO 26.Xr fs 5 , 27.Xr disktab 5 , 28.Xr disklabel 8 , 29.Xr tunefs 8 , 30.Xr newfs 8 , 31.Xr fsck 8 32.Sh HISTORY 33The 34.Nm 35command appeared in 36.Bx 4.2 . 37