When I'm requesting metrics for an autoscaling group ( namespace AWS/EC2 and dimension "Name=AutoScalingGroupName,Value=xxxx"

it returns:

./check_cloudwatch: 42: ./check_cloudwatch: [[: not found
CPUUtilization OK - 3.181333333333334 Percent

i am using this script to monitor my RDS, but it does not work....
i got this error:

[1347108288] SERVICE NOTIFICATION: nagiosadmin;rds1;CPU;UNKNOWN;notify-service-by-email;CPUUtilization UNKNOWN - failed to retrieve data. check arguments.

i can get the response from command line:

/usr/lib64/nagios/plugins/check_cloudwatch ap-northeast-1 CPUUtilization "Average" "AWS/RDS" "DBInstanceIdentifier=nagiostest" 360 60 80

CPUUtilization OK - 7.692 Percent

but it does not work with nagios... who can help me??

I am using the script to monitor my RDS. When I tried I got this error: CPUUtilization UNKNOWN - failed to retrieve data. check arguments.

I can get the response from command line: /usr/lib/nagios/plugins/check_cloudwatch us-east-1 CPUUtilization "Average" "AWS/RDS" "DBInstanceIdentifier=rds-test" 360 60 80

CPUUtilization OK - 7.692 Percent

but it does not work with nagios... who can help me?? Much appreciate. Thanks in advance.