tpm_setownable: 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/sbin/tpm_setownable - from package: tpm-tools

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

On Debian possible default full paths are:

/usr/sbin/tpm_setownable - from package: tpm-tools

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

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