bionic (1) tracker-store.1.gz

NAME

       tracker-store - database indexer and query daemon

SYNOPSIS

       tracker-store [OPTION...]

DESCRIPTION

       tracker-store provides both a powerful database daemon which allows clients to query or update their data
       using the highly descriptive SPARQL language.

       tracker-store does not do any file crawling or any mining of data itself, instead other processes do that
       while  tracker-store  serves  as a daemon waiting for such requests from application miners like tracker-
       miner-fs.

OPTIONS

       -?, --help
              A brief help message including some examples.

       -V, --version
              Returns the version of this binary.

       -v, --verbosity={0|1|2|3}
              Sets the logging level, 0=errors, 1=minimal, 2=detailed, 3=debug.

       -r, --force-reindex
              This forces tracker-store to remove databases and to  recreate  fresh  databases  ready  for  data
              insertion from the miners. For more information about the miners, see tracker-miner-fs.

       -n, --readonly-mode
              This  starts  tracker-store  in  a  mode  which disables writing to the database. Only SPARQL read
              requests can be serviced if this option is used.

ENVIRONMENT

       TRACKER_DB_ONTOLOGIES_DIR
              This is the directory which tracker uses to load the  .ontology  files  from.  If  unset  it  will
              default to the correct place. This is used mainly for testing purposes.

       TRACKER_LANGUAGE_STOP_WORDS_DIR
              This  is  the  directory  which tracker uses to load the stop words dictionaries from. If unset it
              will default to the correct place. This is used mainly for testing purposes.

       TRACKER_STORE_MAX_TASK_TIME
              This is maximum time allowed for a process to  finish  before  interruption  happens.  The  actual
              moment  of  interruption  depends  also  on  the  frequency  of  checks.  The value 0 indicates no
              interruption.  This environment variable is used mainly for testing purposes.

       TRACKER_STORE_SELECT_CACHE_SIZE / TRACKER_STORE_UPDATE_CACHE_SIZE
              Tracker caches database statements which occur frequently to make subsequent repeat  queries  much
              faster.  The  cache  size is set to 100 by default for each type (select and update queries). This
              must be at least 2 as a minimum, any less and a value of 3 is used instead. The number  represents
              the  number  of  cached  statements  to keep around.  This environment variable is used mainly for
              testing purposes.

       TRACKER_USE_LOG_FILES
              Don't  just  log  to  stdout  and  stderr,  but   to   log   files   too   which   are   kept   in
              $HOME/.local/share/tracker/.  This  came  into  effect in 0.15.3 and 0.16.0. After this version of
              Tracker, logging to file (usually useful for  debugging)  can  only  be  done  by  declaring  this
              environment variable.

       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/

NOTES

       tracker-store is highly bound to the D-Bus freedesktop project. A D-Bus session is needed for all Tracker
       processes  to  communicate  between  each  other.   D-Bus  is our acting IPC. See dbus-daemon(1) for more
       information.

SEE ALSO

       tracker-applet(1), tracker-search-tool(1), tracker-search(1), tracker-tag(1), tracker-stats(1),  tracker-
       services(1), tracker-info(1), tracker-control(1),

       http://www.w3.org/TR/rdf-sparql-query/

       dbus-daemon(1),

       http://www.freedesktop.org/wiki/Software/dbus