postrm is in fontconfig-config 2.8.0-3ubuntu9.2.
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 | #! /bin/sh
set -e
CONF=/etc/fonts/local.conf
case "$1" in
purge)
if [ -x /usr/bin/ucf ]; then
ucf --purge $CONF
fi
rm -f $CONF
rm -rf /etc/fonts/conf.d
rmdir /usr/local/share/fonts 2>/dev/null || true
;;
esac
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