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LEARN ABOUT X11R4

hald

HALD(8) 						      System Manager's Manual							   HALD(8)

NAME

       hald - HAL daemon

SYNOPSIS

       hald [options]

DESCRIPTION

       hald  is  a  daemon  that maintains a database of the devices connected to the system system in real-time. The daemon connects to the D-Bus
       system message bus to provide an API that applications can use to discover, monitor and invoke operations on devices. For more  information
       about  both  the  big  picture  and  specific  API  details, refer to the HAL spec which can be found in /usr/local/share/doc/hal/spec/hal-
       spec.html depending on the distribution.

OPTIONS

       The following options are supported:

       --daemon=yes|no
	      Specify whether to run in the foreground or the background.

       --verbose=yes|no
	      Enable verbose debug output.

       --use-syslog
	      Enable logging of debug output to the syslog instead of stderr. Use this option only together with --verbose.

       --help Print out usage.

       --version
	      Print the version of the daemon and exit.

BUGS AND DEBUGGING

       Please send bug reports to either the distribution or the HAL mailing list, see http://lists.freedesktop.org/mailman/listinfo/hal on how to
       subscribe.

       First,  to  obtain  useful debug traces you will need to have debuginfo packages installed. On a Fedora system this is in the hal-debuginfo
       package and can be installed via the yum update program.

       Second, shut down the existing hald daemon instance; on a Fedora system this is achieved by

       /usr/local/etc/init.d/haldaemon stop

       After having shut down the daemon, you might want to run

       pkill hald

       to ensure that all the helper processe of hald are killed too. To start the HAL daemon, use

       /usr/local/sbin/hald --daemon=no --verbose=yes

       If the daemon crashes, you can start it under a debugger via

       gdb /usr/local/sbin/hald

       and then typing

       run --daemon=no --verbose=yes

       at the (gdb) prompt. To capture a back trace, use the bt command and attach this to the bug report.

       Please also attach the output of lshal(1) in the bug report if possible (it's not possible if the hald daemon crashed). If  the	nature	of
       the bug has to do with hotplugging, attach two outputs of lshal(1) - one before the device hotplug event and one after.

SEE ALSO

       udev(7),  dbus-daemon(1),  lshal(1),  hal-set-property(1), hal-get-property(1), hal-find-by-property(1), hal-find-by-capability(1), hal-is-
       caller-locked-out(1)

AUTHOR

       Written by David Zeuthen <david@fubar.dk> with a lot of help from many others.

																	   HALD(8)

Programming