kjumpingcube: 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/kjumpingcube - from package: kdegames

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

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