How to pass parameter of oracle sql script file to sqlplus from shell prompt?

Example 1

#!/bin/sh

username=\"Scott\"
password=\"@T!ger\"
host=10.x.xx.xxx
port=1521
service=esmd
ezconnect=$host:$port/$service

echo username:  $username
echo password:  $password
echo host:      $host
echo port:      $port
echo service:   $servive
echo ezconnect  $ezconnect

echo -e 'show user \n  select 1 from dual; \n select sysdate from dual; \nexit;' |  sqlplus -s  $username/$password@$ezconnect

Output:

oracle@esmd:~> ./test_echo.sh
username: "Scott"
password: "@T!ger"
host: 10.x.xx.xxx
port: 1521
service:
ezconnect 10.x.xx.xxx:1521/esmd
USER is "Scott"

         1
----------
         1


SYSDATE
---------
19-FEB-20

oracle@esmd:~>

Example 2

#!/bin/sh

username=\"Scott\"
password=\"@T!ger\"


echo username:  $username
echo password:  $password

testoutput=$(sqlplus -s $username/$password  << EOF
set pagesize 0 feedback off verify off heading off echo off;
show user
SELECT to_char(sysdate,'DD-MM-YYYY HH24:MI')||' Test passed' from dual;
@ulcase1.sql
exit;
EOF
)

echo $testoutput

Output:

oracle@esmd:~> ./test_Upper_case.sh
username: "Scott"
password: "@T!ger"
USER is "Scott" 19-02-2020 15:08 Test passed
oracle@esmd:~>

Example 3 test.sh

#!/bin/bash

sudo  -H -E  -u oracle  -s "/opt/oracle/test_Upper_case.sh"

Output

esmd:~ # ./test.sh
username: "Scott"
password: "@T!ger"
USER is "Scott" 19-02-2020 15:50 Test passed

/opt/oracle/test_Upper_case.sh

!/bin/sh

username=\"Scott\"
password=\"@T!ger\"


echo username:  $username
echo password:  $password

testoutput=$($ORACLE_HOME/bin/sqlplus -s $username/$password  << EOF
set pagesize 0 feedback off verify off heading off echo off;
show user
SELECT to_char(sysdate,'DD-MM-YYYY HH24:MI')||' Test passed' from dual;
@/opt/oracle/ulcase1.sql
exit;
EOF
)

echo $testoutput