vflmkvfl: 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/vflmkvfl - from package: vflib3-bin

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