#!/bin/sh
DIRBACKUPLOG=/ora/Export/ARCHIVELOGd
testexdir=`touch $DIRBACKUPLOG/.test`
echo $testexdir
if [ "$testexdir" = "" ]
then
        echo "ok!=)"
else
        echo "not ok!=)"
fi
exit  0 ;

$ ./test
touch: /ora/Export/ARCHIVELOGd/.test cannot create

ok!=)

#!/bin/sh
DIRBACKUPLOG=/ora/Export/ARCHIVELOG
if [ -d $DIRBACKUPLOG ]
then
        echo "ok!=)"
else
        echo "Directory does not exist"
        exit  0 ;
fi
if [ -w $DIRMACKUPLOG ]
then
   echo klmn
else
  echo "Permission denied"
  exit  0 ;
fi

exit  0 ;

ok!=)
./test[ 10 ]: test: Specify a parameter with this command.
Permission denied

#!/bin/sh
DIRBACKUPLOG=/ora/Export/ARCHIVELOG
if [ -d $DIRBACKUPLOG ]
then
        echo "ok!=)"
else
        echo "Directory does not exist"
        exit  0 ;
fi
if [ -w $DIRMACKUPLOG ]
then
   rman<<EOF
   connect target
   exit
   EOF
else
  echo "Permission denied"
  exit  0 ;
fi

exit  0 ;

ok!=)
./test[ 10 ]: Syntax error at line  12  : `<<' is not matched.