You can use following in your IF Controller to check if the file exists
${__groovy(((new File("/Users/hansi/Documents/training/jmeter/install/apache-jmeter-5.3/bin/jmeter.sh")).exists()))}
You can use following in your IF Controller to check if the file exists
${__groovy(((new File("/Users/hansi/Documents/training/jmeter/install/apache-jmeter-5.3/bin/jmeter.sh")).exists()))}
You can use POSTMAN to send any requests from the client