/usr/sbin/blend-update-usermenus is in blends-common 0.6.96.
This file is owned by root:root, with mode 0o755.
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 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50  | #!/bin/bash
#
# $Id$ 
usage() {
   echo "Usage: `basename $0` <Blend>"
   echo "Blend:   `getBlendList|tr ' ' '|'`"
   echo
   echo "Updates user menus of all users registered for Blend"
}
# the base dir for Blend conffiles, where script expects to find dirs named like
# each registered Blend
CONFBASE=${CONFBASE:-/etc/blends}
# a local per Blend conf is sourced later, after argument parsing
. ${CONFBASE}/blends.conf
# specific utilities for blend-update-menus
. ${SHAREDIR}/blend-update-menus
if ! amI root; then
	blendLog "$0 must be called by root.  If you are a normal user just call update-menus ."
	exit 0
fi
case $1 in
	-h|--help|"")
            usage
            exit 0
            ;;
        *)
	    set -e
            checkBlend $1 || \
                blendFail $? "Debian Pure Blend $1 does not exist"
	    BLEND=$1
            set +e
esac
if [ -s /etc/blends/${BLEND}/${BLEND}.conf ] ; then
	. /etc/blends/${BLEND}/${BLEND}.conf
fi
for ROLE in `getBlendRoleList ${BLEND}`; do
        for BLENDUSER in `getUsersInRole ${BLEND} ${ROLE} 1`; do
		# Update user menus if UPDATEUSERMENU is set to yes
            	blendLog "Adding menu for user ${BLENDUSER} of ${BLEND} ..."
            	su ${BLENDUSER} -c "update-menus"
        done
done
 |