indexdump: 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/indexdump - from package: perl-DBD-XBase

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

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