Importance of orainstRoot.sh

[oracle@DBBACKUPSERVER oraInventory]$ cat orainstRoot.sh

#!/bin/sh

if [ -d "/etc" ]; then

chmod 755 /etc;

fi

if [ -f "/home/oracle/10.2.0/product/oraInventory/oraInst.loc" ]; then

cp /home/oracle/10.2.0/product/oraInventory/oraInst.loc /etc/oraInst.loc;

else

INVPTR=/etc/oraInst.loc

INVLOC=/home/oracle/10.2.0/product/oraInventory

GRP=oinstall

PTRDIR="`dirname $INVPTR`";

# Create the software inventory location pointer file

if [ ! -d "$PTRDIR" ]; then

 mkdir -p $PTRDIR;

fi

echo "Creating the Oracle inventory pointer file ($INVPTR)";

echo    inventory_loc=$INVLOC > $INVPTR

echo    inst_group=$GRP >> $INVPTR

chmod 644 $INVPTR

# Create the inventory directory if it doesn't exist

if [ ! -d "$INVLOC" ];then

 echo "Creating the Oracle inventory directory ($INVLOC)";

 mkdir -p $INVLOC;

fi

fi

echo "Changing permissions of /home/oracle/10.2.0/product/oraInventory to 770.";

chmod -R 770 /home/oracle/10.2.0/product/oraInventory;

if [ $? != 0 ]; then

 echo "OUI-35086:WARNING: chmod of /home/oracle/10.2.0/product/oraInventory to 770 failed!";

fi

echo "Changing groupname of /home/oracle/10.2.0/product/oraInventory to oinstall.";

chgrp oinstall /home/oracle/10.2.0/product/oraInventory;

if [ $? != 0 ]; then

 echo "OUI-10057:WARNING: chgrp of /home/oracle/10.2.0/product/oraInventory to oinstall failed!";

fi

echo "The execution of the script is complete"