cycfx2prog: 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/cycfx2prog - from package: cycfx2prog

You may install the required package with command apt-get install {package}
Error in other languages:
cycfx2prog: bevel nie gevind nie
cycfx2prog: comandă negăsită
cycfx2prog: comando não encontrado
cycfx2prog: commande introuvable
cycfx2prog: command not found
cycfx2prog: käsku ei ole
cycfx2prog: không tìm thấy lệnh
cycfx2prog: komanda nerasta
cycfx2prog: Kommando nicht gefunden.
cycfx2prog: kommandot finns inte
cycfx2prog: komut yok
cycfx2prog: nie znaleziono polecenia
cycfx2prog: níor aimsíodh an t-ordú
cycfx2prog: no se encontró la orden
cycfx2prog: no s'ha trobat l'ordre
cycfx2prog: opdracht niet gevonden
cycfx2prog: parancs nem található
cycfx2prog: perintah tidak ditemukan
cycfx2prog: príkaz nenájdený
cycfx2prog: příkaz nenalezen
cycfx2prog: команда не найдена
cycfx2prog: командата не е открита
cycfx2prog: 命令找不到
cycfx2prog: コマンドが見つかりません