dbfsd: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dbfsd - from package: dbmix

You may install the required package with command apt-get install {package}

Error in other languages:
dbfsd: bevel nie gevind nie
dbfsd: comandă negăsită
dbfsd: comando não encontrado
dbfsd: commande introuvable
dbfsd: command not found
dbfsd: käsku ei ole
dbfsd: không tìm thấy lệnh
dbfsd: komanda nerasta
dbfsd: Kommando nicht gefunden.
dbfsd: kommandot finns inte
dbfsd: komut yok
dbfsd: nie znaleziono polecenia
dbfsd: níor aimsíodh an t-ordú
dbfsd: no se encontró la orden
dbfsd: no s'ha trobat l'ordre
dbfsd: opdracht niet gevonden
dbfsd: parancs nem található
dbfsd: perintah tidak ditemukan
dbfsd: príkaz nenájdený
dbfsd: příkaz nenalezen
dbfsd: команда не найдена
dbfsd: командата не е открита
dbfsd: 命令找不到
dbfsd: コマンドが見つかりません