freefoam-MRFInter: 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/freefoam-MRFInter - from package: freefoam

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

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