root@usuario:/etc/tryton# trytond -c trytond.conf -d prueba --all
[Thu Aug 03 02:04:59 2017] INFO:trytond.server:using trytond.conf as configuration file
[Thu Aug 03 02:04:59 2017] INFO:trytond.server:initialising distributed objects services
Traceback (most recent call last):
  File "/usr/bin/trytond", line 80, in <module>
    trytond.server.TrytonServer(options).run()
  File "/usr/lib/python2.7/dist-packages/trytond/server.py", line 75, in run
    with Transaction().start(db_name, 0) as transaction:
  File "/usr/lib/python2.7/dist-packages/trytond/transaction.py", line 84, in start
    database = Database(database_name).connect()
  File "/usr/lib/python2.7/dist-packages/trytond/backend/sqlite/database.py", line 179, in connect
    raise IOError('Database "%s" doesn\'t exist!' % db_filename)
IOError: Database "prueba.sqlite" doesn't exist!