goadmin: 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/goadmin - from package: goplay

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

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