dpkg-trigger is a tool to explicitly activate triggers and check for
its support on the running dpkg.
This can be used by maintainer scripts in complex and conditional
situations where the file triggers, or the declarative activate
triggers control file directive, are insufficiently rich. It can also
be used for testing and by system administrators (but note that the
triggers won't actually be run by dpkg-trigger).
Unrecognized trigger name syntaxes are an error for dpkg-trigger.
Check if the running dpkg supports triggers (usually called
from a postinst). Will exit 0 if a triggers-capable dpkg has
run, or 1 with an error message to stderr if not. Normally,
however, it is better just to activate the desired trigger
Show the usage message and exit.
Show the version and exit.
Change the location of the dpkg database. The default location
Override trigger awaiter (normally set by dpkg through the
DPKG_MAINTSCRIPT_PACKAGE environment variable of the
maintainer scripts, naming the package to which the script
belongs, and this will be used by default).
This option arranges that the calling package T (if any) need
not await the processing of this trigger; the interested
package(s) I, will not be added to T's trigger processing
awaited list and T's status is unchanged. T may be considered
installed even though I may not yet have processed the
This option does the inverse of --no-await (since dpkg
1.17.21). It is currently the default behavior.
Just test, do not actually change anything.
0 The requested action was successfully performed. Or a check
or assertion command returned true.
1 A check or assertion command returned false.
2 Fatal or unrecoverable error due to invalid command-line
usage, or interactions with the system, such as accesses to
the database, memory allocations, etc.
This page is part of the dpkg (Debian Package Manager) project.
Information about the project can be found at
⟨https://wiki.debian.org/Teams/Dpkg/⟩. If you have a bug report for
this manual page, see
⟨http://bugs.debian.org/cgi-bin/pkgreport.cgi?src=dpkg⟩. This page
was obtained from the project's upstream Git repository
⟨git://git.debian.org/git/dpkg/dpkg.git⟩ on 2017-03-13. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
1.18.15-3-ga2ef 1970-01-01 dpkg-trigger(1)