preinst is in isc-dhcp-client 4.2.4-7ubuntu12.
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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | #!/bin/sh
set -e
case "$1" in
install|upgrade)
# Upgrade old lucid configs
if [ -e /etc/dhcp/dhclient.conf ] && [ $(md5sum /etc/dhcp/dhclient.conf | cut -f1 -d ' ') = 5e012287a1dcf058b3fea4c5bf0bd95a ]; then
sed -i -e '/host-name "<hostname>"/i #send host-name "andare.fugue.com";' \
-e 's/host-name "<hostname>"/host-name = gethostname()/' \
-e '/domain-search, host-name,$/a \
dhcp6.name-servers, dhcp6.domain-search,' \
-e '/ntp-servers;$/a \
dhcp6.fqdn, dhcp6.sntp-servers;' \
-e 's/ntp-servers;$/ntp-servers,/' \
/etc/dhcp/dhclient.conf
fi
# if the /etc/dhclient.conf from dhcp-client was modified,
# bring it forward to /etc/dhcp3/dhclient.conf, but in a way not
# to upset dpkg about a changed conffile
if [ ! -e /etc/dhcp3/dhclient.conf ] && [ -e /etc/dhclient.conf ] && \
! >/dev/null 2>&1 md5sum -c - <<-EOF; then
10830c7543724cfd36f10dd87a5f98eb /etc/dhclient.conf
EOF
mkdir -p /etc/dhcp3
cp /etc/dhclient.conf /etc/dhcp3/dhclient.conf.oldconfig
fi
# handle lingering dhclient.conf from lenny (this can be safely removed
# after the wheezy release)
if [ -e /etc/dhcp/dhclient.conf ] && \
[ "`md5sum /etc/dhcp/dhclient.conf | awk '{print $1;}'`" = 6e3910d75cd5cde0042ecb6d48492ae9 ]; then
sed -i -e 's/rfc3442-classless-static-routes;/rfc3442-classless-static-routes, ntp-servers;/' /etc/dhcp/dhclient.conf
fi
# We renamed debug-enter to debug - handle the transition
if [ ! -e /etc/dhcp3/dhclient-enter-hooks.d/debug ] && \
[ -e /etc/dhcp3/dhclient-enter-hooks.d/debug-enter ]; then
mv /etc/dhcp3/dhclient-enter-hooks.d/debug-enter \
/etc/dhcp3/dhclient-enter-hooks.d/debug
else
rm -f /etc/dhcp3/dhclient-enter-hooks.d/debug-enter
fi
# We renamed debug-exit to debug - handle the transition
if [ ! -e /etc/dhcp3/dhclient-exit-hooks.d/debug ] && \
[ -e /etc/dhcp3/dhclient-exit-hooks.d/debug-exit ]; then
mv /etc/dhcp3/dhclient-exit-hooks.d/debug-exit \
/etc/dhcp3/dhclient-exit-hooks.d/debug
else
rm -f /etc/dhcp3/dhclient-exit-hooks.d/debug-exit
fi
# We moved /etc/dhcp3/dhclient-script to /sbin in 3.0.4-2
if dpkg --compare-versions "$2" lt-nl "3.0.4-2"; then
if [ -e /etc/dhcp3/dhclient-script ]; then
if >/dev/null 2>&1 md5sum -c - <<-EOF; then
2b18b5c59b26d00aa115716b3da2ed26 /etc/dhcp3/dhclient-script
EOF
rm -f /etc/dhcp3/dhclient-script
fi
fi
fi
;;
abort-upgrade)
;;
*)
echo "preinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
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