maven: what does ` -U,--update-snapshots` really do?

Question

In the command line help, I see that maven \"checks\" for updates:

-U,--update-snapshots                  Forces a check for updated
                                     


        

Answer 1

It's important to add that executing mvn -U will override your local SNAPSHOT jars with remote SNAPSHOT jars.

Without -U argument, local SNAPSHOTS won't be override.