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.TH UDEVINFO 8 "January 2004" "" "Linux Administrator's Manual"
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.SH NAME
udevinfo \- retrieve information from udev
.SH SYNOPSIS
.B udevinfo
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.RI "[\-q " query_type " \-p " sysfs_path "] [\-drVh]"
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.SH "DESCRIPTION"
.B udevinfo
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allows users to query the udev database for information on any device
currently present on the system. It also provides a way to query any device
in the sysfs tree to help creating
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.B udev
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rules.
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.SH "OPTIONS"
.TP
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.B \- V
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Print the version information.
.TP
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.B \- r
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Print the
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.B udev_root
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directory. When used in conjunction with a query for the node name or the
symlink names, the
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.B udev_root
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will be prepended to query result.
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.TP
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.BI \- q " query_type"
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Query the database for specified value of a created device node or network
interface.
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.RB Needs " \-p " or " \-n " specified.
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.br
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Valid types are:
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.BR name ", " symlink ", " path " or " all.
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.TP
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.BI \- p " sysfs_path"
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Specify the sysfs path of the device to query.
.TP
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.BI \- n " name"
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Specify the name of the node, the symlink or the network interface for the
device to query. Partition names generated with the NAME{all_partitons} option
can not be queried, the main device must be used instead.
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.TP
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.B \- a
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Print all
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.BI SYSFS{ filename }
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attributes along the device chain. Useful for finding
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unique attributes to compose a rule.
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.RB Needs " \-p " specified.
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.TP
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.B \- d
Print the relationship between the devpath and the node name for all devices
currently available in the database.
.TP
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.B \- h
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Print help text.
.SH "FILES"
.nf
/etc/udev/* udev config files
.fi
.LP
.SH "SEE ALSO"
.BR udev (8)
.SH AUTHORS
.B udevinfo
was developed primarily by Kay Sievers <kay.sievers@vrfy.org>, with help
from others.