postrm is in ntpdate 1:4.2.6.p3+dfsg-1ubuntu3.
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 | #!/bin/sh
set -e
if dpkg-maintscript-helper supports rm_conffile; then
dpkg-maintscript-helper rm_conffile \
/etc/dhcp3/dhclient-enter-hooks.d/ntpdate 1:4.2.6+dfsg-1 -- "$@"
fi
if dpkg-maintscript-helper supports mv_conffile; then
dpkg-maintscript-helper mv_conffile \
/etc/dhcp3/dhclient-exit-hooks.d/ntpdate \
/etc/dhcp/dhclient-exit-hooks.d/ntpdate \
1:4.2.6.p1+dfsg-1 -- "$@"
fi
if [ "$1" = "purge" ]; then
rm -rf /var/lib/ntpdate/
fi
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