amule-emc: 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/amule-emc - from package: amule-emc

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

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