sfxload: 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/sfxload - from package: awesfx

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

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