Ich habe einen Schlussstrich gezogen und Debian neu installiert. Aber jetzt habe ich das Problem, dass ich den FroFTPd nicht installiert bekomme. Folgene Meldung kam:
debian:~# apt-get install proftpd
Reading Package Lists... Done
Building Dependency Tree... Done
Package proftpd has no available version, but exists in the database.
This typically means that the package was mentioned in a dependency and
never uploaded, has been obsoleted or is not available with the contents
of sources.list
E: Package proftpd has no installation candidate
debian:~#