Diff not saving file mysql

How to save differences mysql databases in a file using liquibase?

It has been successfully executed but the file is not save.

How can i solve the problem?

To save the output of the diff command, you need to pass this argument:

--outputFile=<my output file>

If you want to create another changelogfile when comparing two databases, you run the diffChangeLog command and pass:

--changelogfile <output changelog file>