djinn: 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/djinn - from package: djinn

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

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