cube_info: 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 CentOS possible default full paths are:

/usr/bin/cube_info - from package: cube

You may install the required package with command yum install {package}

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