topcube: 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/topcube - from package: node-topcube
/usr/lib/nodejs/topcube/bin/topcube - from package: node-topcube

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

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