postrm is in runit 2.1.1-6.2ubuntu2.
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 | #!/bin/sh
set -e
test "$1" = 'remove' || test "$1" = 'purge' || exit 0
if [ -f /etc/inittab ] && grep '#-- runit begin' /etc/inittab >/dev/null; then
echo 'Removing SV inittab entry...'
rm -f /etc/inittab'{new}'
sed -e '/#-- runit begin/,/#-- runit end/d' \
</etc/inittab >/etc/inittab'{new}'
mv -f /etc/inittab'{new}' /etc/inittab
if ps -p 1 >/dev/null; then
kill -s HUP 1
fi
fi
test "$1" = 'purge' || exit 0
rm -rf /etc/sv/getty-5/supervise /var/run/sv.getty-5
test ! -h /var/service || rm -f /var/service
# remove lingering debconf-managed configuration
# from versions 2.1.0-1 through 2.1.1-6.1.
test -r /usr/share/debconf/confmodule || exit 0
. /usr/share/debconf/confmodule
db_purge
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