preinst is in dnet-common 2.64.
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 | #!/bin/sh
#
set -e
if [ "$2" != "2.56.1+nmu1" ]
then
exit 0
fi
. /usr/share/debconf/confmodule
db_get dnet-common/configure-action
configure_action=$RET
# Get the node name and address
db_get dnet-common/nodename
name=$RET
db_get dnet-common/nodeaddr
addr=$RET
db_stop
# Update /etc/decnet.conf
if [ "$configure_action" = 'configure later' -a "$name" = 'linux' -a "$addr" = '1.10' -a -f /etc/decnet.conf ]
then
echo 'dnet-common: Last version (2.56.1+nmu1) may broke your config files. I try to undo this now.'
echo 'dnet-common: A backup of your nodedatabase can be found in /etc/decnet.conf.nmubackup'
echo 'dnet-common: If there is any problem please include /etc/default/decnet in the bug report.'
mv -v /etc/decnet.conf /etc/decnet.conf.nmubackup
sed -i 's/^DNET_INTERFACES=""/DNET_INTERFACES="all"/' /etc/default/decnet
fi
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