mbma: command not found

Have You tried accessing the binary with the full path?

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/mbma - from package: frog

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