fs-uae-arcade: 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/fs-uae-arcade - from package: fs-uae-arcade

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

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