freefoam: 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/freefoam - from package: freefoam

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