tpm_nvdefine: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/sbin/tpm_nvdefine - from package: tpm-tools

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