jackdbus: 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/jackdbus - from package: jackd2

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

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