mdb-prop: 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/mdb-prop - from package: mdbtools

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

On Debian possible default full paths are:

/usr/bin/mdb-prop - from package: mdbtools

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

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