According to Robert, SQLite files should work on any platform. If you decide to switch to MySQL or PostgreSql, you can run the following (standard) command to save your database on a Windows computer:
manage.py dumpdata <app1> <app1> > mydbdump.json
and then configure settings.py on the Linux machine for the MySQL or PostgreSql database and run:
manage.py syncdb
manage.py loaddata ./mydbdump.json
I have successfully done this several times to switch from MySQL to SQLite, it worked fine.
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