vflmkekan: 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/vflmkekan - from package: vflib3-bin

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

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