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.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
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.Dd May 29, 2021
.Dt ZFS-DIFF 8
.Os
.
.Sh NAME
.Nm zfs-diff
.Nd show difference between ZFS snapshots
.Sh SYNOPSIS
.Nm zfs
.Cm diff
.Op Fl FHth
.Ar snapshot Ar snapshot Ns | Ns Ar filesystem
.
.Sh DESCRIPTION
Display the difference between a snapshot of a given filesystem and another
snapshot of that filesystem from a later time or the current contents of the
filesystem.
The first column is a character indicating the type of change, the other columns
indicate pathname, new pathname
.Pq in case of rename ,
change in link count, and optionally file type and/or change time.
The types of change are:
.Bl -tag -compact -offset Ds -width "M"
.It Sy -
The path has been removed
.It Sy +
The path has been created
.It Sy M
The path has been modified
.It Sy R
The path has been renamed
.El
.Bl -tag -width "-F"
.It Fl F
Display an indication of the type of file, in a manner similar to the
.Fl F
option of
.Xr ls 1 .
.Bl -tag -compact -offset 2n -width "B"
.It Sy B
Block device
.It Sy C
Character device
.It Sy /
Directory
.It Sy >
Door
.It Sy |\&
Named pipe
.It Sy @
Symbolic link
.It Sy P
Event port
.It Sy =
Socket
.It Sy F
Regular file
.El
.It Fl H
Give more parsable tab-separated output, without header lines and without
arrows.
.It Fl t
Display the path's inode change time as the first column of output.
.It Fl h
Do not
.Sy \e0 Ns Ar ooo Ns -escape
non-ASCII paths.
.El
.
.Sh SEE ALSO
.Xr zfs-snapshot 8