DBusViewer: command not found

Have You tried accessing the binary with the full path?

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

[root@server ~]# echo $PATH

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/DBusViewer - from package: dbus-java-bin

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