Shell Programming and Scripting

Whenever I execute the following korn shell script command I get this error.

su - feeduser

export: =0: not identifier

** Here is the part of the script with the error **

# Set db type (PRODUCTION, DEVELOPMENT, QA, UA)
#
unset DB_TYPE_ERROR
$HOME/share/$DBS_NAME $ORACLE_SID -db_type | read DB_TYPE DB_TYPE_TYPE HOST_TYPE
export ${DB_TYPE}=0
if [ $DB_TYPE_ERROR ];then
echo "ERROR: DB_TYPE=$DB_TYPE_TYPE and HOST_TYPE=$HOST_TYPE don't match"
return 1
fi

Can someone explain to me what this error means and how to correct it?

I have quoted the problem for you:

The line has to read]

Code:

export DB_TYPE=0

The reason is: you do not want to use the variable DB_TYPE but you want to declare it. "${var}" means: replace this by whatever content the variable var holds, then execute whatever comes out of this operation. Therefore, when you write

Code:

${DB_TYPE}=0

The shell will first replace the "${DB_TYPE}" with the content of the variable - which is an empty string at this time, because the variable is not declared yet - and therefore end with trying to execute

Code:

=0

Which of course does not make any sense. It is this what the shell complains about.

I hope this helps.

bakunin

Changed the script to reflect recommendation.

# Set db type (PRODUCTION, DEVELOPMENT, QA, UA)
#
unset DB_TYPE_ERROR
$HOME/share/$DBS_NAME $ORACLE_SID -db_type | read DB_TYPE DB_TYPE_TYPE HOST_TYPE
export DB_TYPE=0
if [ $DB_TYPE_ERROR ];then
echo "ERROR: DB_TYPE=$DB_TYPE_TYPE and HOST_TYPE=$HOST_TYPE don't match"
return 1


Now getting error message on this line. on another script

[: !=: missing second argument

here is the second script where the message is coming from.

#
if [ $(echo $DB_TYPE | sed 's/QA/XA/;s/UA/XA/') != $HOST_TYPE ];then
echo "DB_TYPE_ERROR $DB_TYPE $HOST_TYPE"
return 1
fi


Any information?

I have singled out the probably erroneous line. Notice that "$var" and "${var}" means basically the same and reread again what i have written before. Price question: what do you think is causing the error?

I hope this helps.

bakunin