I installed sqlite3 and want to use it to recover information from stylish.sqlite which is located in my Firefox profile folder and is generated by the Stylish extension:
$ cd ~/.mozilla/firefox/w4wcp85s.default
$ sqlite3 stylish.sqlite
SQLite version 3.7.17 2013-05-20 00:56:22
Enter ".help" for instructions
Enter SQL statements terminated with a ";"