VisualBoyAdvance: 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/VisualBoyAdvance - from package: visualboyadvance

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

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