emerillon: 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/emerillon - from package: emerillon

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

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