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File Content: `sysuser-helper`

#!/bin/sh
set -eu
exec >/dev/null # only errors should pass.
command="${1}" ; shift

case "${command}" in
    postinst)
        if ! getent passwd "$CONF_USERNAME" ; then
            emptydir=$(mktemp -d) # to inhibit /etc/skel

            set -- --system --shell /usr/sbin/nologin

            # Create a home directory for a system user, unless it is
            # /nonexistent, which must stay nonexistent.
            if [ "${CONF_HOME}" != '/nonexistent' ] ; then
                set -- "$@" --create-home --skel "${emptydir}" --home-dir "${CONF_HOME}"
            fi

            useradd "$@" "${CONF_USERNAME}"
            rmdir "${emptydir}"
        fi
        usermod "${CONF_USERNAME}" -c "Created by dh-sysuser for ${CONF_PACKAGE}"

        # If the user already has another home directory, we use `usermod
        # --move-home'. Unfortunately, a new home is required to be
        # non-existent (and different from previous), so this
        # condition is required.
        if [ ! -d "$CONF_HOME" ] ; then
            usermod --move-home --home "$CONF_HOME" "$CONF_USERNAME"
        fi
        ;;
    prerm)
	#no-op, to avoid transition 1.3.5 --> 1.4; to be removed when nothing is build with dh-sysuser < 1.4
	#1.4 moves purge logic from prerm to postrm, but packages builded with dh-sysuser < 1.4 will still call
	#syuser-helper in prerm and not in postrm
	;;
    postrm)
        # Transition from dh-sysuser=1.3. It did not pass mainainer
        # script arguments to sysuser-helper.
        case ${1:-} in
            purge|abort-install)
		if [ "${CONF_HOME}" != '/nonexistent' ] ; then
			rmdir --ignore-fail-on-non-empty "${CONF_HOME}"
		fi
                if ! [ -d "${CONF_HOME}" ] ; then
                    if ! userdel --force "${CONF_USERNAME}" ; then
                        echo >&2 "warning: failed to remove ${CONF_USERNAME}. Proceeding anyway."
                    fi
                fi
        esac
esac
File Content: sysuser-helper

File Content: `sysuser-helper`
