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HTTP server push (also known as HTTP streaming) is a mechanism for sending unsolicited (asynchronous) data from a web server to a web browser.
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tracker-extract(1) [centos man page]

tracker-extract(1)						   User Commands						tracker-extract(1)

NAME
tracker-extract - Extract metadata from a file. SYNOPSYS
tracker-extract [OPTION...] FILE... DESCRIPTION
tracker-extract reads the file and mimetype provided in stdin and extract the metadata from this file; then it displays the metadata on the standard output. NOTE: If a FILE is not provided then tracker-extract will run for 30 seconds waiting for DBus calls before quitting. OPTIONS
-?, --help Show summary of options. -v, --verbosity=N Set verbosity to N. This overrides the config value. Values include 0=errors, 1=minimal, 2=detailed and 3=debug. -f, --file=FILE The FILE to extract metadata from. The FILE argument can be either a local path or a URI. It also does not have to be an absolute path. -m, --mime=MIME The MIME type to use for the file. If one is not provided, it will be guessed automatically. -d, --disable-shutdown Disable shutting down after 30 seconds of inactivity. -i, --force-internal-extractors Use this option to force internal extractors over 3rd parties like libstreamanalyzer. -m, --force-module=MODULE Force a particular module to be used. This is here as a convenience for developers wanting to test their MODULE file. Only the MOD- ULE name has to be specified, not the full path. Typically, a MODULE is installed to /usr/lib/tracker-0.7/extract-modules/. This option can be used with or without the .so part of the name too, for example, you can use --force-module=foo Modules are shared objects which are dynamically loaded at run time. These files must have the .so suffix to be loaded and must con- tain the correct symbols to be authenticated by tracker-extract. For more information see the libtracker-extract reference documen- tation. -V, --version Show binary version. EXAMPLES
Using command line to extract metadata from a file: $ tracker-extract -v 3 -f /path/to/some/file.mp3 Using a specific module to extract metadata from a file: $ tracker-extract -v 3 -f /path/to/some/file.mp3 -m mymodule ENVIRONMENT
TRACKER_EXTRACTORS_DIR This is the directory which tracker uses to load the shared libraries from (used for extracting metadata for specific file types). These are needed on each invocation of tracker-store. If unset it will default to the correct place. This is used mainly for testing purposes. The default location is /usr/lib/tracker-0.10/extract-modules/. TRACKER_EXTRACTOR_RULES_DIR This is the directory which tracker uses to load the rules files from. The rules files describe extractor modules and their sup- ported MIME types. The default location is /usr/share/tracker/extract-rules/. TRACKER_USE_CONFIG_FILES Don't use GSettings, instead use a config file similar to how settings were saved in 0.10.x. That is, a file which is much like an .ini file. These are saved to $HOME/.config/tracker/ SEE ALSO
tracker-store(1), tracker-sparql(1), tracker-stats(1), tracker-info(1). /usr/lib/tracker-0.10/extract-modules/ /usr/share/tracker/extract-rules/ GNU
July 2007 tracker-extract(1)

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tracker-control(1)						   User Commands						tracker-control(1)

NAME
tracker-control - Manage Tracker processes and data SYNOPSIS
tracker-control [OPTION...] DESCRIPTION
tracker-control lists all tracker related processes when no OPTIONs are specified. OPTIONS
-?, --help Show summary of options. -k, --kill=[all|store|miners] 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 GUARANTEES death. -t, --terminate=[all|store|miners] This uses SIGTERM to stop all Tracker processes found matching the parameter, if no extra parameter is passed, all will be assumed. This is recommended over --kill because it gives the processes time to shutdown cleanly. -r, --hard-reset This kills all processes in the same way that --kill does but it also removes all databases. Restarting tracker-store re-creates the databases. -e, --soft-reset A soft reset works exactly the same way that --hard-reset does, with the exception that the backup and journal are not removed. These are restored when tracker-store is restarted. -c, --remove-config This removes all config files in $HOME/.config/tracker. All files listed are files which were found and successfully removed. Restarting the respective processes re-creates the default configuration files. -s, --start Starts all miners. This indirectly starts tracker-store too because it is needed for miners to operate properly. -m, --reindex-mime-type=MIME Re-index files which match the MIME type supplied. This is usually used when installing new extractors which support MIME types pre- viously unsupported. This forces Tracker to re-index those files. You can use --reindex-mime-type more than once per MIME type. -V, --version Print version. SEE ALSO
tracker-store(1). GNU
September 2009 tracker-control(1)

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