Short Script to update ip address in file

Modify IP address value inside the file provided; only want the ip address updated Only if you know how to do this and are certain you can do this? Expecting this is something easy for about $10 or so and will be something scripting person with Shell, KSH, Bash, or otherwise would know and understand. Should pass at command line the new IP address Syntax [login to view URL] <ip address> [login to view URL] [login to view URL] file format [login to view URL] { "Comment": "A new record set for the zone.", "Changes": [ { "Action": "CREATE", "ResourceRecordSet": { "Name": "mynode.erich.com.", "Type": "A", "TTL": 60, "ResourceRecords": [ { "Value": "[login to view URL]" } ] } } ] }