marco-window-demo: 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/marco-window-demo - from package: marco

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

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