aylet: 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/aylet - from package: aylet

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

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