Run sql statement in Unix script

I am editing a Unix script that logs into the database and executes a sql script in a certain directory. Rather than execute this sql script I want to be able to run sql statement within the unix script. How do I do this.
This is the line in the Unix script:
su - oracle -c "export ORACLE_SID=${db}; sqlplus '/as sysdba' @${PWD}/audit_loc.sql" > ${PWD}/audit_loc.txt

The script is audit_loc.sql

I would like to execute the sql statement within Unix rather than using this: @${PWD}/audit_loc.sql

The contents of the script is the following:
set heading off;
show parameter audit_file_dest;
exit;

sikyalaSenior Database AdministratorAsked:
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nixfreakConnect With a Mentor Commented:
Ok,
I think the double quotes were causing the problem. So, try:

su - oracle -c "export ORACLE_SID=${db}; /bin/echo 'set heading off;\nshow parameter audit_file_dest;\nexit;' | sqlplus '/as sysdba' @/dev/stdin" > ${PWD}/audit_loc.txt       
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nixfreakCommented:
Not sure but try:
/bin/echo "set heading off;\nshow parameter audit_file_dest;\nexit;" | su - oracle -c "export ORACLE_SID=${db}; sqlplus '/as sysdba' @/dev/stdin" > ${PWD}/audit_loc.txt
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nixfreakCommented:
Small correction, please try:

/bin/echo "set heading off;\nshow parameter audit_file_dest;\nexit;\n" | su - oracle -c "export ORACLE_SID=${db}; sqlplus '/as sysdba' @/dev/stdin" > ${PWD}/audit_loc.txt
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sikyalaSenior Database AdministratorAuthor Commented:
I tried it and it didn't work. what does @/dev/stdin do?
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nixfreakCommented:
Hi sikyala,

Sorry, please try this modification:

su - oracle -c "export ORACLE_SID=${db}; /bin/echo "set heading off;\nshow parameter audit_file_dest;\nexit;\n" | sqlplus '/as sysdba' @/dev/stdin" > ${PWD}/audit_loc.txt
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nixfreakCommented:
/dev/stdin can be used with commands that are not designed to take standard input (stdin).

If it still doesn't work perhaps you can also try replacing the single quotes with double quotes surrounding "/as sysdba".
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nixfreakCommented:
Also I realized that "\n" is not required after exit.
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sikyalaSenior Database AdministratorAuthor Commented:
I tried and got the following:

./audit.bash: nshow: command not found
./audit.bash: nexit | sqlplus '/as sysdba' @/dev/stdin: No such file or directory
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sikyalaSenior Database AdministratorAuthor Commented:
It worked thanks!
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