fwb_procurve_acl: 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/fwb_procurve_acl - from package: fwbuilder

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

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