pork: 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 Debian possible default full paths are:

/usr/bin/pork - from package: pork

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

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