Mongo shell script for displaying status of in-progress index builds

index-status.js

var currentOps = db.currentOp();

print("Index Status:");
if(!currentOps.inprog || currentOps.inprog.length < 1) {
    print("No operations in progress");
} else {
    for(o in currentOps.inprog) {
        var op = currentOps.inprog[o];
        if(op.msg && op.msg.match(/Index Build/)) {
            print(op.opid+' - '+op.msg);
        }
    }
}