aranym: 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/aranym - from package: aranym

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

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