mdb2rec: 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 Debian possible default full paths are:

/usr/bin/mdb2rec - from package: recutils

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

Error in other languages:
mdb2rec: bevel nie gevind nie
mdb2rec: comandă negăsită
mdb2rec: comando não encontrado
mdb2rec: commande introuvable
mdb2rec: command not found
mdb2rec: käsku ei ole
mdb2rec: không tìm thấy lệnh
mdb2rec: komanda nerasta
mdb2rec: Kommando nicht gefunden.
mdb2rec: kommandot finns inte
mdb2rec: komut yok
mdb2rec: nie znaleziono polecenia
mdb2rec: níor aimsíodh an t-ordú
mdb2rec: no se encontró la orden
mdb2rec: no s'ha trobat l'ordre
mdb2rec: opdracht niet gevonden
mdb2rec: parancs nem található
mdb2rec: perintah tidak ditemukan
mdb2rec: príkaz nenájdený
mdb2rec: příkaz nenalezen
mdb2rec: команда не найдена
mdb2rec: командата не е открита
mdb2rec: 命令找不到
mdb2rec: コマンドが見つかりません