deb-triggers(5) dpkg suite deb-triggers(5)
deb-triggers - package triggers
A package declares its relationship to some trigger(s) by including a
triggers file in its control archive (i.e. DEBIAN/triggers during
This file contains directives, one per line. Leading and trailing
whitespace and everything after the first # on any line will be
trimmed, and empty lines will be ignored.
The trigger control directives currently supported are:
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. The "noawait"
variant does not put the triggering packages in triggers-awaited
state. This should be used when the functionality provided by
the trigger is not crucial.
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, configure, remove (including
for the benefit of a conflicting package), purge and
deconfigure. The "noawait" variant does not put the triggering
packages in triggers-awaited state. This should be used when the
functionality provided by the trigger is not crucial.
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
activations. 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
The "-noawait" variants should always be favored when possible since
triggering packages are not put in triggers-awaited state and can thus
be immediately configured without requiring the processing of the
trigger. If the triggering packages are dependencies of other upgraded
packages, it will avoid an early trigger processing run and make it
possible to run the trigger only once as one of the last steps of the
The "-noawait" variants are supported since dpkg 1.16.1, and will lead
to errors if used with an older dpkg.
The "-await" alias variants are supported since dpkg 1.17.21, and will
lead to errors if used with an older dpkg.
dpkg-trigger(1), dpkg(1), /usr/share/doc/dpkg-dev/triggers.txt.gz.
22.214.171.124 2019-09-05 deb-triggers(5)
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