[orcl10gdb@SVRDELLD41 schema_opt]$ cat test_while_array.sh
#declares Array and global variables
declare -a arry
cnt=0
i=0
schema1=""
schema2=""
schema3=""

# Reads schemaname and wanttoproceed flag and exit on reachig maximum schema numbers (3)

while read -p  "Enter Schema Name `expr $cnt + 1` :" schemaname
do
        arry[cnt]=$schemaname

             wnt2prc=""
             while [ "$wnt2prc" != "n" ] && [ "$wnt2prc" != "y" ]
             do
                read -p "Want to procede (y/n) :" wnt2prc
             done

                cnt=`expr $cnt + 1`
                if [ $wnt2prc = "n" ] || [ $cnt -gt 2 ]
                then
                  if [ $cnt -gt 2 ]
                  then
                    echo "Maximum schema number (3) Reached"
                  fi
                break
                fi

done

#Assigns schema names to global variables only if Not Null
if [ -n ${arry[0]} ];
then
        schema1=`echo ${arry[0]} | tr 'a-z' 'A-Z'`
fi

if [ -n ${arry[1]} ];
then
        schema2=`echo ${arry[1]} | tr 'a-z' 'A-Z'`
fi

if [ -n ${arry[2]} ];
then
        schema3=`echo ${arry[2]} | tr 'a-z' 'A-Z'`
fi

#echos then schema name
echo 'schema 1 '$schema1 ${arry[0]}
echo 'schema 2 '$schema2 ${arry[1]}
echo 'schema 3 '$schema3 ${arry[2]}


#while [ $i -lt $cnt ]
#do
#i=`expr $i + 1`
# Calls other sripts with arry as parameter
#done
[orcl10gdb@SVRDELLD41 schema_opt]$ sh test_while_array.sh
Enter Schema Name 1 :schm1
Want to procede (y/n) :a
Want to procede (y/n) :b
Want to procede (y/n) :y
Enter Schema Name 2 :schm2
Want to procede (y/n) :n
schema 1 SCHM1 schm1
schema 2 SCHM2 schm2
schema 3
[orcl10gdb@SVRDELLD41 schema_opt]$

   while [ "$wnt2prc" != "n" ] && [ "$wnt2prc" != "y" ]
    do
        read -p "Want to procede (y/n) :" wnt2prc
    done

 while [ $wnt2prc != "n" ] && [ $wnt2prc != "y" ]

  [: !=: unary operator expected

 
if [ $wnt2prc = "n" ] || [ $cnt -gt 2 ]