pub2raw: 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/pub2raw - from package: libmspub-tools

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

Error in other languages:
pub2raw: bevel nie gevind nie
pub2raw: comandă negăsită
pub2raw: comando não encontrado
pub2raw: commande introuvable
pub2raw: command not found
pub2raw: käsku ei ole
pub2raw: không tìm thấy lệnh
pub2raw: komanda nerasta
pub2raw: Kommando nicht gefunden.
pub2raw: kommandot finns inte
pub2raw: komut yok
pub2raw: nie znaleziono polecenia
pub2raw: níor aimsíodh an t-ordú
pub2raw: no se encontró la orden
pub2raw: no s'ha trobat l'ordre
pub2raw: opdracht niet gevonden
pub2raw: parancs nem található
pub2raw: perintah tidak ditemukan
pub2raw: príkaz nenájdený
pub2raw: příkaz nenalezen
pub2raw: команда не найдена
pub2raw: командата не е открита
pub2raw: 命令找不到
pub2raw: コマンドが見つかりません