/etc/init.d/cupsys restart

/etc/init.d/cups <command>

$ apt-cache show cupsys
Package: cupsys
Priority: optional
Section: net
Installed-Size: 56
Maintainer: Debian CUPS Maintainers <pkg-cups-devel@lists.alioth.debian.org>
Architecture: all
Source: cups
Version: 1.3.7-7
Depends: cups
Filename: pool/main/c/cups/cupsys_1.3.7-7_all.deb
Size: 48166
MD5sum: cd3a652dfef4af5bd97118acabaa2a27
SHA1: 4bb2a05de002a523774cd1246ec3409cc4a2246e
SHA256: a55bc9f86d4a83dd4972a9fb56948481985958252ba9183251fafbb2ea1eba63
Description: Common UNIX Printing System (transitional package)
 This is a dummy package to ease transition to new package name.
  .
  It can be safely removed from your system.

$ apt-cache show cups
Priority: optional
Section: net
Installed-Size: 9544
Maintainer: Debian CUPS Maintainers <pkg-cups-devel@lists.alioth.debian.org>
Architecture: i386
Version: 1.3.7-7
Replaces: cupsys (<< 1.3.7-6), cupsys-bsd (<< 1.3.7-5)
Provides: cupsys
Depends: libavahi-compat-libdnssd1 (>= 0.6.16), libc6 (>= 2.7-1), libcups2 (>= 1.3.7), libcupsimage2 (>= 1.3.0), libdbus-1-3 (>= 1.0.2), libgnutls26 (>= 2.2.0-0), libkrb53 (>= 1.6.dfsg.2), libldap-2.4-2 (>= 2.4.7), libpam0g (>= 0.99.7.1), libpaper1, libslp1, debconf (>= 1.2.9) | debconf-2.0, poppler-utils | xpdf-utils, perl-modules, procps, ghostscript, lsb-base (>= 3), cups-common, ssl-cert (>= 1.0.11), adduser
Recommends: cups-client, smbclient (>= 3.0.9), foomatic-filters, avahi-utils
Suggests: cups-bsd, cups-driver-gutenprint, foomatic-filters-ppds, hplip, xpdf-korean | xpdf-japanese | xpdf-chinese-traditional | xpdf-chinese-simplified, cups-pdf
Conflicts: cupsys (<< 1.3.7-6), cupsys-bsd (<< 1.3.7-5)
Filename: pool/main/c/cups/cups_1.3.7-7_i386.deb
Size: 1929446
MD5sum: 1c808cad445c4c643517379750e66879
SHA1: 2a3573689550a1dcde06a0eb38d4f361f1a5f461
SHA256: 276fceb0871d7e6fdb2987521e9bf56535ba38f3caff4c4ab7dbbbfed41bbc44
Description: Common UNIX Printing System(tm) - server
 The Common UNIX Printing System (or CUPS(tm)) is a printing system and
 general replacement for lpd and the like.  It supports the Internet
 Printing Protocol (IPP), and has its own filtering driver model for
 handling various document types.
 .
 This package provides the CUPS scheduler/daemon and related files.
 .
 The terms "Common UNIX Printing System" and "CUPS" are trademarks of
 Easy Software Products (www.easysw.com), and refer to the original
 source packages from which these packages are made.

#! /bin/sh
### BEGIN INIT INFO
# Provides:          cups
# Required-Start:    $syslog
# Required-Stop:     $syslog
# Should-Start:      $network avahi
# Should-Stop:       $network
# X-Start-Before:    samba
# X-Stop-After:      samba
# Default-Start:     2 3 4 5
# Default-Stop:      1
# Short-Description: CUPS Printing spooler and server
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/cupsd
NAME=cupsd
PIDFILE=/var/run/cups/$NAME.pid
DESC="Common Unix Printing System"

unset TMPDIR

test -x $DAEMON || exit 0

if [ -r /etc/default/cups ]; then
  . /etc/default/cups
fi

. /lib/lsb/init-functions

# Get the timezone set.
if [ -z "$TZ" -a -e /etc/timezone ]; then
    TZ=`cat /etc/timezone`
    export TZ
fi

restart_xprint() {
    if [ -n "$success" ] && [ -x /etc/init.d/xprint ]; then
        invoke-rc.d xprint force-reload || true
    fi
}

case "$1" in
  start)
   log_begin_msg "Starting $DESC: $NAME"
   chown root:lpadmin /usr/share/ppd/custom 2>/dev/null || true
   chmod 3775 /usr/share/ppd/custom 2>/dev/null || true

   mkdir -p `dirname "$PIDFILE"`
   if [ "$LOAD_LP_MODULE" = "yes" -a -f /usr/lib/cups/backend/parallel \
             -a -f /proc/devices -a -f /proc/modules -a -x /sbin/modprobe ]; then
     modprobe -q lp || true
     modprobe -q ppdev || true
   fi

   start-stop-daemon --start --quiet --oknodo --pidfile "$PIDFILE" --exec $DAEMON && success=1

   log_end_msg $?
   restart_xprint
   ;;
  stop)
   log_begin_msg "Stopping $DESC: $NAME"
   start-stop-daemon --stop --quiet --retry 5 --oknodo --pidfile $PIDFILE --name $NAME && success=1
   log_end_msg $?
   restart_xprint
   ;;
  reload|force-reload)
       log_begin_msg "Reloading $DESC: $NAME"
       start-stop-daemon --stop --quiet --pidfile $PIDFILE --name $NAME --signal 1 && success=1
       log_end_msg $?
   restart_xprint
       ;;
  restart)
   log_begin_msg "Restarting $DESC: $NAME"
   if start-stop-daemon --stop --quiet --retry 5 --oknodo --pidfile $PIDFILE --name $NAME; then
      start-stop-daemon --start --quiet --pidfile "$PIDFILE" --exec $DAEMON && success=1
   fi
   log_end_msg $?
   restart_xprint
   ;;
  status)
   echo -n "Status of $DESC: "
   if [ ! -r "$PIDFILE" ]; then
      echo "$NAME is not running."
      exit 3
   fi
   if read pid < "$PIDFILE" && ps -p "$pid" > /dev/null 2>&1; then
      echo "$NAME is running."
      exit 0
   else
      echo "$NAME is not running but $PIDFILE exists."
      exit 1
   fi
   ;;
  *)
   N=/etc/init.d/${0##*/}
   echo "Usage: $N {start|stop|restart|force-reload|status}" >&2
   exit 1
   ;;
esac

exit 0