This file is indexed.

preinst is in netplan 1.10.1-2.

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

set -e

#
# netplan pre-installation script
#

TRAD_ACL=/var/lib/plan/netplan.dir/.netplan-acl
ETC_ACL=/etc/plan/netplan-acl

if [ -r $TRAD_ACL ] && [ ! -L $TRAD_ACL ]
then
    if [ -r $ETC_ACL ]
    then
	cat >&2 <<EOF
WARNING: you have both $TRAD_ACL and $ETC_ACL file.
$TRAD_ACL should be a symlink to $ETC_ACL.
Please fix before attempting to reinstall.
EOF
	exit 1
    else
	echo >&2 "Moving $TRAD_ACL to $ETC_ACL"
	cp $TRAD_ACL $ETC_ACL && rm -f $TRAD_ACL
    fi
fi