vflmkt1: 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/vflmkt1 - from package: vflib3-bin

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

Error in other languages:
vflmkt1: bevel nie gevind nie
vflmkt1: comandă negăsită
vflmkt1: comando não encontrado
vflmkt1: commande introuvable
vflmkt1: command not found
vflmkt1: käsku ei ole
vflmkt1: không tìm thấy lệnh
vflmkt1: komanda nerasta
vflmkt1: Kommando nicht gefunden.
vflmkt1: kommandot finns inte
vflmkt1: komut yok
vflmkt1: nie znaleziono polecenia
vflmkt1: níor aimsíodh an t-ordú
vflmkt1: no se encontró la orden
vflmkt1: no s'ha trobat l'ordre
vflmkt1: opdracht niet gevonden
vflmkt1: parancs nem található
vflmkt1: perintah tidak ditemukan
vflmkt1: príkaz nenájdený
vflmkt1: příkaz nenalezen
vflmkt1: команда не найдена
vflmkt1: командата не е открита
vflmkt1: 命令找不到
vflmkt1: コマンドが見つかりません