preinst is in powernap 2.21-0ubuntu1.
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 36 37 38 39 40 41 42 43 44 | #!/bin/sh
set -e
# Backup old confile
if [ -n "$2" ] && dpkg --compare-versions "$2" lt 2.0; then
if [ -f /etc/powernap/config ]; then
if md5sum /etc/powernap/config | grep -qs def76ff408c21dc74683a05d7c5fcc5a; then
true
else
mv -f /etc/powernap/config /etc/powernap/config.old
echo "PowerNap: The configuration format has changed"
echo "Powernap: Moved /etc/powernap/config to /etc/powernap/config.old"
echo "PowerNap: You may need to merge your customizations into /etc/powernap/config"
fi
fi
fi
# can be removed after 16.04 LTS
DEFAULT_FILE=/etc/default/powernap
if [ "$1" = upgrade ]; then
if [ -f $DEFAULT_FILE ] && egrep -sqi 'START="?yes' $DEFAULT_FILE; then
# once the override file is installed, we'll remove it to reenable the upstart job
touch ${DEFAULT_FILE}.enable
fi
fi
# Automatically added by dh_installinit
if [ "$1" = install ] || [ "$1" = upgrade ]; then
if [ -e "/etc/init.d/powernap" ] && [ -L "/etc/init.d/powernap" ] \
&& [ $(readlink -f "/etc/init.d/powernap") = /lib/init/upstart-job ]
then
rm -f "/etc/init.d/powernap"
fi
fi
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/default/powernap 2.19~ -- "$@"
# End automatically added section
exit 0
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