preinst is in ifupdown 0.7.53.1.
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 | #!/bin/sh
set -e
if [ ! -d /etc/network ]; then
mkdir -p /etc/network
fi
if [ -f /etc/network/interfaces ] && ! grep -q '^[^#]' /etc/network/interfaces
then
f=/etc/network/interfaces
if [ `md5sum < $f | cut -f1 -d ' '` = "4ed352919f69a77ad302ad1593204405" ]; then
if [ `wc -c < /etc/network/interfaces` -eq 2466 ]; then
echo -n "Removing old dummy /etc/network/interfaces: "
rm /etc/network/interfaces
echo "done."
fi
fi
fi
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/default/ifupdown 0.7~+ ifupdown -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init.d/ifupdown 0.7~+ ifupdown -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init.d/ifupdown-clean 0.7~beta1 ifupdown -- "$@"
# End automatically added section
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