tdbdump: 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/tdbdump - from package: tdb-tools

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

On Debian possible default full paths are:

/usr/bin/tdbdump - from package: tdb-tools

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

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