jcuber-config: 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/jcuber-config - from package: jcuber

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

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