The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/man/man8/zfs-diff.8

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    1 .\"
    2 .\" CDDL HEADER START
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   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.
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   30 .\" Copyright 2019 Joyent, Inc.
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   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
   46 Display the difference between a snapshot of a given filesystem and another
   47 snapshot of that filesystem from a later time or the current contents of the
   48 filesystem.
   49 The first column is a character indicating the type of change, the other columns
   50 indicate pathname, new pathname
   51 .Pq in case of rename ,
   52 change in link count, and optionally file type and/or change time.
   53 The types of change are:
   54 .Bl -tag -compact -offset Ds -width "M"
   55 .It Sy -
   56 The path has been removed
   57 .It Sy +
   58 The path has been created
   59 .It Sy M
   60 The path has been modified
   61 .It Sy R
   62 The path has been renamed
   63 .El
   64 .Bl -tag -width "-F"
   65 .It Fl F
   66 Display an indication of the type of file, in a manner similar to the
   67 .Fl F
   68 option of
   69 .Xr ls 1 .
   70 .Bl -tag -compact -offset 2n -width "B"
   71 .It Sy B
   72 Block device
   73 .It Sy C
   74 Character device
   75 .It Sy /
   76 Directory
   77 .It Sy >
   78 Door
   79 .It Sy |\&
   80 Named pipe
   81 .It Sy @
   82 Symbolic link
   83 .It Sy P
   84 Event port
   85 .It Sy =
   86 Socket
   87 .It Sy F
   88 Regular file
   89 .El
   90 .It Fl H
   91 Give more parsable tab-separated output, without header lines and without
   92 arrows.
   93 .It Fl t
   94 Display the path's inode change time as the first column of output.
   95 .It Fl h
   96 Do not
   97 .Sy \e0 Ns Ar ooo Ns -escape
   98 non-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
  105 The following example shows how to see what has changed between a prior
  106 snapshot of a ZFS dataset and its current state.
  107 The
  108 .Fl F
  109 option 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
  112 M       /       /tank/test/
  113 M       F       /tank/test/linked      (+1)
  114 R       F       /tank/test/oldname -> /tank/test/newname
  115 -       F       /tank/test/deleted
  116 +       F       /tank/test/created
  117 M       F       /tank/test/modified
  118 .Ed
  119 .
  120 .Sh SEE ALSO
  121 .Xr zfs-snapshot 8

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