1.\" 2.\" CDDL HEADER START 3.\" 4.\" The contents of this file are subject to the terms of the 5.\" Common Development and Distribution License (the "License"). 6.\" You may not use this file except in compliance with the License. 7.\" 8.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9.\" or http://www.opensolaris.org/os/licensing. 10.\" See the License for the specific language governing permissions 11.\" and limitations under the License. 12.\" 13.\" When distributing Covered Code, include this CDDL HEADER in each 14.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15.\" If applicable, add the following below this CDDL HEADER, with the 16.\" fields enclosed by brackets "[]" replaced with your own identifying 17.\" information: Portions Copyright [yyyy] [name of copyright owner] 18.\" 19.\" CDDL HEADER END 20.\" 21.\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved. 22.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org> 23.\" Copyright (c) 2011, 2019 by Delphix. All rights reserved. 24.\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25.\" Copyright (c) 2014, Joyent, Inc. All rights reserved. 26.\" Copyright (c) 2014 by Adam Stevko. All rights reserved. 27.\" Copyright (c) 2014 Integros [integros.com] 28.\" Copyright 2019 Richard Laager. All rights reserved. 29.\" Copyright 2018 Nexenta Systems, Inc. 30.\" Copyright 2019 Joyent, Inc. 31.\" 32.Dd March 16, 2022 33.Dt ZFS-DIFF 8 34.Os 35. 36.Sh NAME 37.Nm zfs-diff 38.Nd show difference between ZFS snapshots 39.Sh SYNOPSIS 40.Nm zfs 41.Cm diff 42.Op Fl FHth 43.Ar snapshot Ar snapshot Ns | Ns Ar filesystem 44. 45.Sh DESCRIPTION 46Display the difference between a snapshot of a given filesystem and another 47snapshot of that filesystem from a later time or the current contents of the 48filesystem. 49The first column is a character indicating the type of change, the other columns 50indicate pathname, new pathname 51.Pq in case of rename , 52change in link count, and optionally file type and/or change time. 53The types of change are: 54.Bl -tag -compact -offset Ds -width "M" 55.It Sy - 56The path has been removed 57.It Sy + 58The path has been created 59.It Sy M 60The path has been modified 61.It Sy R 62The path has been renamed 63.El 64.Bl -tag -width "-F" 65.It Fl F 66Display an indication of the type of file, in a manner similar to the 67.Fl F 68option of 69.Xr ls 1 . 70.Bl -tag -compact -offset 2n -width "B" 71.It Sy B 72Block device 73.It Sy C 74Character device 75.It Sy / 76Directory 77.It Sy > 78Door 79.It Sy |\& 80Named pipe 81.It Sy @ 82Symbolic link 83.It Sy P 84Event port 85.It Sy = 86Socket 87.It Sy F 88Regular file 89.El 90.It Fl H 91Give more parsable tab-separated output, without header lines and without 92arrows. 93.It Fl t 94Display the path's inode change time as the first column of output. 95.It Fl h 96Do not 97.Sy \e0 Ns Ar ooo Ns -escape 98non-ASCII paths. 99.El 100. 101.Sh EXAMPLES 102.\" These are, respectively, examples 22 from zfs.8 103.\" Make sure to update them bidirectionally 104.Ss Example 1 : No Showing the differences between a snapshot and a ZFS Dataset 105The following example shows how to see what has changed between a prior 106snapshot of a ZFS dataset and its current state. 107The 108.Fl F 109option is used to indicate type information for the files affected. 110.Bd -literal -compact -offset Ds 111.No # Nm zfs Cm diff Fl F Ar tank/test@before tank/test 112M / /tank/test/ 113M F /tank/test/linked (+1) 114R F /tank/test/oldname -> /tank/test/newname 115- F /tank/test/deleted 116+ F /tank/test/created 117M F /tank/test/modified 118.Ed 119. 120.Sh SEE ALSO 121.Xr zfs-snapshot 8 122