postinst is in uml-utilities 20070815-1.3ubuntu1.
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.
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set -e
# summary of how this script can be called:
# * <postinst> `configure' <most-recently-configured-version>
# * <old-postinst> `abort-upgrade' <new version>
# * <conflictor's-postinst> `abort-remove' `in-favour' <package>
# <new-version>
# * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
# <failed-install-package> <version> `removing'
# <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
#
# quoting from the policy:
# Any necessary prompting should almost always be confined to the
# post-installation script, and should be protected with a conditional
# so that unnecessary prompting doesn't happen if a package's
# installation fails and the `postinst' is called with `abort-upgrade',
# `abort-remove' or `abort-deconfigure'.
case "$1" in
configure)
if ! getent passwd uml-net >/dev/null; then
if getent group uml-net >/dev/null; then
# earlier versions only created a group
adduser --quiet --system --ingroup uml-net --no-create-home uml-net
else
adduser --quiet --system --group --no-create-home uml-net
fi
fi
if ! dpkg-statoverride --list /usr/lib/uml/uml_net >/dev/null; then
dpkg-statoverride --update --add root uml-net 04750 \
/usr/lib/uml/uml_net
fi
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
# Automatically added by dh_installinit
if [ -x "/etc/init.d/uml-utilities" ]; then
if [ ! -e "/etc/init/uml-utilities.conf" ]; then
update-rc.d uml-utilities defaults >/dev/null
fi
invoke-rc.d uml-utilities start || exit $?
fi
# End automatically added section
exit 0
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