amd: 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/amd - from package: am-utils

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

On Debian possible default full paths are:

/usr/sbin/amd - from package: am-utils

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

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