postinst is in gcin-gtk3-immodule 2.8.4+dfsg1-1ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | #!/bin/sh
set -e
set -u
GTK_QUERY_IMMODULES=/usr/lib/x86_64-linux-gnu/libgtk-3-0/gtk-query-immodules-3.0
if [ -x $GTK_QUERY_IMMODULES ]; then
case "$1" in
configure)
$GTK_QUERY_IMMODULES --update-cache
;;
esac
else
echo "Cannot find $GTK_QUERY_IMMODULES" >&2
fi
exit 0
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