ffset: 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/ffset - from package: joystick

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