rfoo-rconsole: 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/rfoo-rconsole - from package: python-rfoo

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

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