druc: 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/druc - from package: alliance

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

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