bootpgw: 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/sbin/bootpgw - from package: bootp

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

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