postinst is in syslog-ng-mod-json 3.13.2-3.
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 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | #! /bin/sh
## Common preinst, postinst and postrm script for syslog-ng-mod-*
## packages. Some of the modules in syslog-ng-3.3 came with a
## 00load-$mod config file, which are being removed in 3.4. This file
## does the necessary dpkg-maintscript-helper voodoo to get rid of
## them.
##
## To avoid duplication, only one file is written, the rest are
## symlinked to it.
set -e
case "${DPKG_MAINTSCRIPT_PACKAGE}" in
        syslog-ng-mod-json)
                modname="tfjson"
                ;;
        syslog-ng-mod-sql|syslog-ng-mod-mongodb)
                modname="${DPKG_MAINTSCRIPT_PACKAGE#syslog-ng-mod-}"
                ;;
        *)
                echo "rm_conffile voodoo unsupported for package ${DPKG_MAINTSCRIPT_PACKAGE}!" >&2
                exit 1
                ;;
esac
if [ -x "/usr/bin/dpkg-maintscript-helper" ]; then
        if dpkg-maintscript-helper supports rm_conffile; then
                dpkg-maintscript-helper rm_conffile \
                        /etc/syslog-ng/conf.d/00load-${modname}.conf 3.4.0~ -- "$@"
        fi
fi
exit 0
 |