rebuild-jar-repository: 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/rebuild-jar-repository - from package: jpackage-utils

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

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