packETH: 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/packETH - from package: packETH

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

On Debian possible default full paths are:

/usr/bin/packETH - from package: packETH

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

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