This file is indexed.

postinst is in golang-go 2:1.2.1-2ubuntu1.

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.

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#!/bin/sh

confdir=/etc/golang
conffile=$confdir/goinstall.conf

set -e

. /usr/share/debconf/confmodule

# Cleanup old debconf dashboard question that was removed in golang-go 2:1.1
# -- 2013-05-14 stapelberg
db_purge

case "$1" in
    configure)
	# Remove obsolete goinstall.conf.
	# -- 2013-05-14 stapelberg
	if [ -e $conffile ]; then
		rm -f $conffile
		rmdir /etc/golang || true
	fi
	update-alternatives --force --install /usr/bin/go go /usr/bin/golang-go 10
	# Very ugly hack to set timestamps same as /usr/bin/go
	find /usr/lib/go/pkg -exec touch -r /usr/bin/golang-go {} \;
	;;
    *)
	;;
esac