nsdbparams: 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/sbin/nsdbparams - from package: fedfs-utils-nsdbparams

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

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