index_dump: 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/index_dump - from package: libbluray

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

On Debian possible default full paths are:

/usr/bin/index_dump - from package: libdbd-xbase-perl

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

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