vasy: 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/vasy - from package: alliance

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

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