'\" t
.\"     Title: tracker3-daemon
.\"    Author: The Tracker developers
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 04/24/2024
.\"    Manual: Tracker manual
.\"    Source: \ \& 3.7.2
.\"  Language: English
.\"
.TH "TRACKER3\-DAEMON" "1" "04/24/2024" "\ \& 3\&.7\&.2" "Tracker manual"
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.SH "NAME"
tracker3-daemon \- Start, stop, restart and list daemons responsible for indexing content
.SH "SYNOPSIS"
.sp
.nf
tracker3 daemon [options\&.\&.\&.]
tracker3 daemon \-s | \-t [daemons] | \-k [daemons] | \-l
tracker3 daemon \-f | \-w [ontology]
tracker3 daemon \-\-miner <miner> \-\-pause[\-for\-process] <reason>
tracker3 daemon \-\-miner <miner> \-\-resume <cookie>
.fi
.SH "DESCRIPTION"
.sp
Tracker indexes content with daemon processes that run in the background\&. The \fBtracker3 daemon\fR command allows for control of these components\&. This ranges from starting, stopping and killing processes to pausing and resuming them\&.
.sp
In addition to all this, there are ways to follow or watch what is happening in real time from a top level and right down where the SPARQL commits are happening too\&.
.sp
If no arguments are provided this command will show the current status of all Tracker data miners\&.
.sp
The data miners can be paused or resumed using this command and you can also list miners running and available\&.
.SH "OPTIONS"
.PP
\fB\-p, \-\-list\-processes\fR
.RS 4
This lists all Tracker processes in the system\&.
.RE
.PP
*\-k, \-\-kill
.RS 4
This uses SIGKILL to stop all Tracker processes found matching the parameter, if no extra parameter is passed, "all" will be assumed\&. This is not advised unless you are having problems stopping Tracker in the first place\&. This
\fBGUARANTEES\fR
death\&.
.RE
.PP
*\-t, \-\-terminate=
.RS 4
This uses SIGTERM to stop all Tracker processes\&. This is recommended over \-\-kill because it gives the processes time to shutdown cleanly\&.
.RE
.PP
\fB\-s, \-\-start\fR
.RS 4
Starts all miners\&.
.RE
.PP
\fB\-f, \-\-follow\fR
.RS 4
Follow status changes to daemons as they happen\&. This is a top level view of what is happening\&. You will see the name for each daemon and a state with the progress in that state\&.
.RE
.sp
This requires Ctrl+C to stop and return to the command line\&. Each new status is put on a new line\&.
.PP
\fB\-w, \-\-watch=[\fR\fB\fIontology\fR\fR\fB]\fR
.RS 4
Watch changes that happen to the database in real time\&. This requires Ctrl+C to stop and return to the command line\&.
.RE
.sp
If \fIontology\fR is unspecified, all updates are shown\&. The \fIontology\fR can be a comma separated list of shorthand or long hand ontology properties\&. For example:
.sp
.if n \{\
.RS 4
.\}
.nf
    $ tracker3 daemon \-w nie:url,nie:mimeType,nfo:fileSize,nie:dataSource
    Now listening for resource updates to the database
    All nie:plainTextContent properties are omitted

    Press Ctrl+C to stop

    \*(Aqnfo:Document\*(Aq
       \*(Aqnfo:fileSize\*(Aq = \*(Aq1770\*(Aq
       \*(Aqnie:dataSource\*(Aq = \*(Aqhttp://tracker\&.api\&.gnome\&.org/ontology/v3/tracker#extractor\-data\-source\*(Aq
       \*(Aqnie:mimeType\*(Aq = \*(Aqtext/plain\*(Aq
       \*(Aqnie:url\*(Aq = \*(Aqfile:///home/martyn/\&.bash_aliases\*(Aq
    \*(Aqnfo:Document\*(Aq
       \*(Aqnie:dataSource\*(Aq = \*(Aqhttp://tracker\&.api\&.gnome\&.org/ontology/v3/tracker#extractor\-data\-source\*(Aq

    \&.\&.\&.
.fi
.if n \{\
.RE
.\}
.PP
\fB\-\-list\-common\-statuses\fR
.RS 4
This will list statuses most commonly produced by miners and the store\&. These statuses are not translated when sent over D\-Bus and should be translated by each application\&. These are not considered static and are subject to change at any point\&.
.RE
.sp
Additionally, these statuses are not the only ones which may be reported by a miner\&. There may be other states pertaining to the specific roles of the miner in question\&.
.PP
\fB\-\-list\-miners\-running\fR
.RS 4
This will list all miners which have responded to a D\-Bus call\&. Sometimes it is helpful to use this command with
\fB\-\-list\-miners\-available\&.\fR
.RE
.PP
\fB\-\-list\-miners\-available\fR
.RS 4
This will list all miners which are available even if they are not running at the moment\&.
.RE
.PP
\fB\-\-pause\-details\fR
.RS 4
For listing all miners which are paused and the reasons for being paused, you can use this\&. It will also display the application that requested the pause too\&.
.RE
.PP
\fB\-\-miner=<\fR\fB\fIminer\fR\fR\fB>\fR
.RS 4
This argument is used with
\fB\-\-pause\fR
or
\fB\-\-resume\fR
to say which miner you want to pause or resume\&. You can use the full D\-Bus name, e\&.g\&. "org\&.freedesktop\&.Tracker3\&.Miner\&.Files" OR you can use the suffix, e\&.g\&. "Files"\&.
.RE
.PP
\fB\-\-pause=<\fR\fB\fIreason\fR\fR\fB>\fR
.RS 4
The
\fIreason\fR
here is useful to know WHY the miner should be paused\&. A miner can be paused many times by multiple applications\&. Only when all pauses have been resumed will it continue\&. If successful, a cookie will be given to uniquely identify the request\&. This cookie is used to resume the pause at a later stage\&.
.RE
.PP
\fB\-\-pause\-for\-process=<\fR\fB\fIreason\fR\fR\fB>\fR
.RS 4
This works exactly the same way as
\fB\-\-pause\fR
with the exception that it only keeps the pause active while the calling process is alive\&. As soon as you press Ctrl+C the pause is resumed automatically\&.
.RE
.PP
\fB\-\-resume=<\fR\fB\fIcookie\fR\fR\fB>\fR
.RS 4
The
\fIcookie\fR
is given by a successful
\fB\-\-pause\fR
command\&. It is a number which identifies each pause request\&. When all pauses have been resumed, the miner will resume working\&.
.RE