How to call a script with procedure parameter

Question

I have a script my_script.sql in sqlplus and that script calls a procedure with one in parameter my_procedure (my_parameter IN VARCHAR2).
I need to pass the parameter in the script call.
sqlplus>@my_script my_parameter
How can I do that?

Answer 1

SQL> set serveroutput on
SQL> create or replace procedure testpass (par1 in varchar2)
  2  is
  3  begin
  4     dbms_output.put_line(par1);
  5* end;
SQL> get my_script
  1* exec testpass ('&1');
SQL> @my_script 'This is the parameter'
This is the parameter
PL/SQL procedure successfully completed.
SQL>