Pass Linux variable in Oracle script

Question

How to pass Linux variable in Oracle code?

I need to pass it in below format and it should not ask for "enter a value for 1:"

Please advise.

mount='/u08/dbname/'
sqlplus -s "/ as sysdba" <<EOF 
set serveroutput on;
set feedback off;
set verify off;
set heading off;
DECLARE
line varchar(100);
BEGIN 
line := '&1';
if (5 > 0)then
dbms_output.put_line(line);
end if;
END;
/
$mount
EOF

Answer 1

export mount='/u08/dbname/'
sqlplus -s "/ as sysdba" <<EOF 
set serveroutput on;
set feedback off;
set verify off;
set heading off;
DECLARE
line varchar(100);
BEGIN 
line := '$mount';
if (5 > 0) then
dbms_output.put_line(line);
end if;
END;
/
$mount
EOF

You can assign the output of a Unix/Linux command to a variable too:

export SPACE=$(df --output=avail -m /dev/sda8 | tail -1)