refdbjade: 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/refdbjade - from package: refdb-clients

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

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