preinst is in nut-client 2.7.4-5.1ubuntu2.
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 | #!/bin/sh
set -e
# Revert /etc/nut/nut.conf mangling done by older versions of the postinst
# See #677054
# changed configfile created by a fresh install in lenny, upgraded to squeeze
if [ "$1" = "install" -o "$1" = "upgrade" ] \
&& dpkg --compare-versions "$2" lt "2.6.4-2" \
&& [ -f /etc/nut/nut.conf ] \
&& [ "`md5sum /etc/nut/nut.conf | cut -d ' ' -f 1`" = 331cca39153f451c2968f4b734c1cf3f ]; then
sed -i '29,$ d' /etc/nut/nut.conf
fi
# changed configfile created by a fresh install in squeeze
if [ "$1" = "install" -o "$1" = "upgrade" ] \
&& dpkg --compare-versions "$2" lt "2.6.4-2" \
&& [ -f /etc/nut/nut.conf ] \
&& [ "`md5sum /etc/nut/nut.conf | cut -d ' ' -f 1`" = f9b571ae65952e3a761fac2202633478 ]; then
sed -i 's/^MODE=none$/MODE = none/' /etc/nut/nut.conf
fi
# Automatically added by dh_installdeb/10.10.7ubuntu2
dpkg-maintscript-helper rm_conffile /etc/bash_completion.d/nut 2.7.1-1~ -- "$@"
# End automatically added section
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