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deb-triggers(5) 			  dpkg utilities			  deb-triggers(5)

NAME
       deb-triggers - package triggers

SYNOPSIS
       triggers

DESCRIPTION
       A package declares its relationship to some trigger(s) by including a triggers file in its
       control archive (i.e. DEBIAN/triggers during package creation).

       This file contains directives, one per line. Leading and trailing  whitespace  and  every-
       thing after the first # on any line will be trimmed, and empty lines will be ignored.

       The trigger control directives currently supported are:

	    interest trigger-name

	    Specifies  that the package is interested in the named trigger. All triggers in which
	    a package is interested must be listed using this directive in the	triggers  control
	    file.

	    activate trigger-name

	    Arranges  that  changes  to this package's state will activate the specified trigger.
	    The trigger will be activated at the start of the following operations: unpack,  con-
	    figure, remove (including for the benefit of a conflicting package), purge and decon-
	    figure.

	    If this package disappears during the unpacking of another package the  trigger  will
	    be	activated  when the disappearance is noted towards the end of the unpack. Trigger
	    processing, and transition from triggers-awaited to installed, does not cause activa-
	    tions.  In the case of unpack, triggers mentioned in both the old and new versions of
	    the package will be activated.

       Unknown directives are an error which will prevent installation of the package.

SEE ALSO
       dpkg-trigger(1), dpkg(1), /usr/share/doc/dpkg-dev/triggers.txt.gz.

Debian Project				    2009-03-15				  deb-triggers(5)
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