setBfree: 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/setBfree - from package: setbfree

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

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