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116 lines
3.8 KiB
Groff
116 lines
3.8 KiB
Groff
'\" t
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.TH "UDEVD" "8" "" "eudev" "udevd"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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udevd \- Device event managing daemon
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.SH "SYNOPSIS"
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.PP
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udevd
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.HP \w'\fB/sbin/udevd\fR\ 'u
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\fB/sbin/udevd\fR [\fB\-\-daemon\fR] [\fB\-\-debug\fR] [\fB\-\-children\-max=\fR] [\fB\-\-exec\-delay=\fR] [\fB\-\-event\-timeout=\fR] [\fB\-\-resolve\-names=early|late|never\fR] [\fB\-\-version\fR] [\fB\-\-help\fR]
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.SH "DESCRIPTION"
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.PP
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\fBudevd\fR
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listens to kernel uevents\&. For every event, udevd executes matching instructions specified in udev rules\&. See
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\fBudev\fR(7)\&.
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.PP
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The behavior of the daemon can be configured using
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\fBudev.conf\fR(5), its command\-line options, environment variables, and on the kernel command\-line, or changed dynamically with
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\fBudevadm control\fR\&.
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.SH "OPTIONS"
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.PP
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\fB\-d\fR, \fB\-\-daemon\fR
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.RS 4
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Detach and run in the background\&.
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.RE
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.PP
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\fB\-D\fR, \fB\-\-debug\fR
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.RS 4
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Print debug messages to standard error\&.
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.RE
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.PP
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\fB\-c\fR, \fB\-\-children\-max=\fR
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.RS 4
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Limit the number of events executed in parallel\&.
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.RE
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.PP
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\fB\-e\fR, \fB\-\-exec\-delay=\fR
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.RS 4
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Delay the execution of
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\fIRUN\fR
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instructions by the given number of seconds\&. This option might be useful when debugging system crashes during coldplug caused by loading non\-working kernel modules\&.
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.RE
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.PP
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\fB\-t\fR, \fB\-\-event\-timeout=\fR
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.RS 4
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Set the number of seconds to wait for events to finish\&. After this time the event will be terminated\&. The default is 30 seconds\&.
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.RE
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.PP
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\fB\-N\fR, \fB\-\-resolve\-names=\fR
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.RS 4
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Specify when udevd should resolve names of users and groups\&. When set to
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\fBearly\fR
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(the default), names will be resolved when the rules are parsed\&. When set to
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\fBlate\fR, names will be resolved for every event\&. When set to
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\fBnever\fR, names will never be resolved and all devices will be owned by root\&.
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.RE
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.PP
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\fB\-h\fR, \fB\-\-help\fR
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.RS 4
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.RE
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.SH "KERNEL COMMAND LINE"
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.PP
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Parameters starting with "rd\&." will be read when
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\fBudevd\fR
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is used in an initrd\&.
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.PP
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\fIudev\&.log\-priority=\fR, \fIrd\&.udev\&.log\-priority=\fR
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.RS 4
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Set the log level\&.
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.RE
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.PP
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\fIudev\&.children\-max=\fR, \fIrd\&.udev\&.children\-max=\fR
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.RS 4
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Limit the number of events executed in parallel\&.
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.RE
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.PP
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\fIudev\&.exec\-delay=\fR, \fIrd\&.udev\&.exec\-delay=\fR
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.RS 4
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Delay the execution of
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\fIRUN\fR
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instructions by the given number of seconds\&. This option might be useful when debugging system crashes during coldplug caused by loading non\-working kernel modules\&.
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.RE
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.PP
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\fIudev\&.event\-timeout=\fR, \fIrd\&.udev\&.event\-timeout=\fR
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.RS 4
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Wait for events to finish up to the given number of seconds\&. This option might be useful if events are terminated due to kernel drivers taking too long to initialize\&.
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.RE
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.PP
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\fInet\&.ifnames=\fR
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.RS 4
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Network interfaces are renamed to give them predictable names when possible\&. It is enabled by default; specifying 0 disables it\&.
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.RE
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.SH "SEE ALSO"
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.PP
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\fBudev.conf\fR(5),
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\fBudev\fR(7),
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\fBudevadm\fR(8)
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