mlcc: 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/mlcc - from package: mlterm-tools

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

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