scripting help

[Tom Brown]

>> if [ $EXITCODE -eq 0 ]; then
>>     echo "$OUTPUT" | grep -v CRITICAL
>>     [ $? -eq 1 ] && EXITCODE=2
>> fi
>>
>> but when the script runs i get this
>>
>> ../libexec/retrieve_custom_snmp: line 84: [: -eq: unary operator expected
>> "CRITICAL emcpowera has 2 dead, 2 alive"
>>
>> can anyone help with this issue
> 
> What is $EXITCODE set to? How is it set?

EXITCODE=`$SNMPWALK -v 1 -c $COMMUNITY $HOST $STATUS`
[ $DEBUG -gt 0 ] && echo "Retrieve exit code is $EXITCODE" >> $DEBUGFILE