setfx: 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/setfx - from package: awesfx

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