uuname: 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/uuname - from package: uucp

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

On Debian possible default full paths are:

/usr/bin/uuname - from package: uucp

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

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