vba: 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/vba - from package: visualboyadvance

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