tdbrestore: 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/tdbrestore - from package: tdb-tools

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

On Debian possible default full paths are:

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

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

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