ownership: 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/ownership - from package: dmidecode

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

On Debian possible default full paths are:

/usr/sbin/ownership - from package: dmidecode

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

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