goplay: 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/goplay - from package: goplay

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

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