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编辑当前文件:/var/lib/dpkg/info/cron.postinst

#!/bin/sh
set -e

crondir="/var/spool/cron"
action="$1"

if [ "$action" != configure ]; then
    exit 0
fi

# Add group for crontabs
getent group crontab > /dev/null 2>&1 || addgroup --system crontab

# Fixup crontab binary for new group 'crontab'.
if ! dpkg-statoverride --list /usr/bin/crontab > /dev/null ; then
    dpkg-statoverride --update --add root crontab 2755 /usr/bin/crontab
fi

# Fixup crontab , directory and files for new group 'crontab'.
# Can't use dpkg-statoverride for this because it doesn't cooperate nicely
# with cron alternatives such as bcron
if [ -d $crondir/crontabs ] ; then
    chown root:crontab $crondir/crontabs
    chmod 1730 $crondir/crontabs
    # This used to be done conditionally. For versions prior to "3.0pl1-81"
    # It has been disabled to suit cron alternative such as bcron. 
    cd $crondir/crontabs
    set +e

# Iterate over each entry in the spool directory, perform some sanity
    # checks (see CVE-2017-9525), and chown/chgroup the crontabs
    for tab_name in *
    do
        [ "$tab_name" = "*" ] && continue
        tab_links=`stat -c '%h' "$tab_name"`
        tab_owner=`stat -c '%U' "$tab_name"`

if [ ! -f "$tab_name" ]
        then
            echo "Warning: $tab_name is not a regular file!"
            continue
        elif [ "$tab_links" -ne 1 ]
        then
            echo "Warning: $tab_name has more than one hard link!"
            continue
        elif [ "$tab_owner" != "$tab_name" ]
        then
            echo "Warning: $tab_name name differs from owner $tab_owner!"
            continue
        fi

chown "$tab_owner:crontab" "$tab_name"
		chmod 600 "$tab_name"
    done
    set -e
fi

# Automatically added by dh_installinit/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -x "/etc/init.d/cron" ]; then
		update-rc.d cron defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native cron $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'cron.service' >/dev/null || true

# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'cron.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'cron.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'cron.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'cron.service' >/dev/null || true
	fi
fi
# End automatically added section