.\"
.\" Copyright (c) 2010 The DragonFly Project.	All rights reserved.
.\"
.\" This code is derived from software contributed to The DragonFly Project
.\" by Nolan Lum <nol888@gmail.com>
.\"
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.Dd December 6, 2010
.Dt DEVATTR 8
.Os
.Sh NAME
.Nm devattr
.Nd tool for displaying devices and their associated properties
.Sh SYNOPSIS
.Nm
.Op Fl Ah
.Op Fl p Ar property
.Op Fl d Ar device
.Op Fl m Ar key:value
.Op Fl r Ar key:value
.Sh DESCRIPTION
The
.Nm
tool is for displaying a list of devices and some
associated properties such as their name.
This tool exposes the same functionality provided by the
.Xr devattr 3
library, namely the filtering capabilities offered.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl A
Excludes aliases from the listing.
.\"
.It Fl h
Displays a help message.
.\"
.It Fl p
Only display the specified
.Ar property .
This can be can be specified multiple times and combined
with all other options.
.\"
.It Fl d
Only display devices with name
.Ar device .
When used with
.Fl p ,
only the specified properties of
.Ar device
are listed.
Can be specified multiple times.
Allows wildcards.
.\"
.It Fl m
Only display devices whose property
.Ar key
matches with wildcards value
.Ar value
unless the key\-value pair starts with ~, in which case
the match is inverted.
Stacks with
.Fl p ,
.Fl d ,
.Fl m .
Can be specified multiple times.
.\"
.It Fl r
Behaves similarly to
.Fl m ,
but matches with regex.
.El
.Sh EXAMPLES
List all devices named 'pts/0':
.Bd -ragged -offset indent
.Nm Fl d
pts/0
.Ed
.Pp
List all devices whose major number is 64:
.Bd -ragged -offset indent
.Nm Fl m
major:64
.Ed
.Pp
List all devices whose name is 'pts/0' and major number is not 64:
.Bd -ragged -offset indent
.Nm Fl d
pts/0
.Fl m
~major:64
.Ed
.Sh SEE ALSO
.Xr devattr 3 ,
.Xr udevd 8
.Sh AUTHORS
.An Nolan Lum