hi,

what we do here is to enable/disable the group from a unix cron script 
like the following. The cron control 1 full each month and the script 
enable the group using nsradmin.
cron line:
00 10 * 6,11 5  /nsr/mrn/bin/foo_biannual.sh active
00 20 * 6,11 6  /nsr/mrn/bin/foo_biannual.sh deactive

script:
Nom=$1
if [ $Nom = "active" ]; then
 #special 3sem vend.
# if [ `date +%d` -ge 22 -a `date +%d` -le 28 ]
 if [ `date +%d` -ge 15 -a `date +%d` -le 21 ]
  then
        echo "========================================================"
                echo "activation du group XXX"
                /usr/sbin/nsradmin -s foo -i /mrn/bin/foo_activ.res
fi; fi
if [ $Nom = "deactive" ]; then
 #special 3sem vend.
# if [ `date +%d` -ge 22 -a `date +%d` -le 28 ]
 if [ `date +%d` -ge 16 -a `date +%d` -le 22 ]
  then
        echo "========================================================"
        echo "deactivation du group XXX"
        /usr/sbin/nsradmin -s foo -i /mrn/bin/foo_deactiv.res
fi; fi


Res files:
print type:NSR group;
name:foo_Serveur
update autostart:Enabled


hope this help.

Alain

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