This script downloads and installs two RPM's

edg-mkgridmap 
edg-mkgridmap-conf

Creates the file /opt/edg/etc/edg-mkgridmap.conf and then runs the application /opt/edg/sbin/edg-mkgridmap and sets creates a scheduled operation to keep edg-mkgridmap up to date.

#!/bin/sh

# Attempt to build a mkgridmap file.

yum -y -d 0 -t install edg-mkgridmap edg-mkgridmap-conf

cat <<EOF>/opt/edg/etc/edg-mkgridmap.conf
 
# Map VO members  cms
group ldap://grid-vo.nikhef.nl/ou=lcg1,o=cms,dc=eu-datagrid,dc=org
.cms
 
# Map VO members  dteam
group ldap://lcg-vo.cern.ch/ou=lcg1,o=dteam,dc=lcg,dc=org .dteam

# A list of authorised users.
auth
ldap://lcg-registrar.cern.ch/ou=users,o=registrar,dc=lcg,dc=org

gmf_local /opt/edg/etc/grid-mapfile-local

EOF

touch /opt/edg/etc/grid-mapfile-local

/opt/edg/sbin/edg-mkgridmap
--output=/etc/grid-security/grid-mapfile --safe
                                                                   
                                                      
cat<<EOF>/etc/cron.d/edg-mkgridmap
50 */6 * * *  root /opt/edg/sbin/edg-mkgridmap
--output=/etc/grid-security/grid-mapfile --safe
EOF