I have some survey data which I'm using Stata to analyze. I want to compute means of one variable by group and save those means to a Stata file. My code looks like this:

svyset [iw=wtsupp], sdrweight(repwtp1-repwtp160) vce(sdr)
svy: mean x

I tried

svy: by grp: mean x

but that did not work. I could save each mean to a separate file by simply saying

svy: mean x if grp==1

but that's inefficient. Is there a better way?

Saving results to a file like one can use SAS ODS to capture results is also a need. I am not talking about the log here. I need the means and the associated group. I'm thinking

estimates save [path],replace

but I'm not sure if that will give me a Stata file or the group if I can figure out how to use by processing.