hp2xx: 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/hp2xx - from package: hp2xx

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

Error in other languages:
hp2xx: bevel nie gevind nie
hp2xx: comandă negăsită
hp2xx: comando não encontrado
hp2xx: commande introuvable
hp2xx: command not found
hp2xx: käsku ei ole
hp2xx: không tìm thấy lệnh
hp2xx: komanda nerasta
hp2xx: Kommando nicht gefunden.
hp2xx: kommandot finns inte
hp2xx: komut yok
hp2xx: nie znaleziono polecenia
hp2xx: níor aimsíodh an t-ordú
hp2xx: no se encontró la orden
hp2xx: no s'ha trobat l'ordre
hp2xx: opdracht niet gevonden
hp2xx: parancs nem található
hp2xx: perintah tidak ditemukan
hp2xx: príkaz nenájdený
hp2xx: příkaz nenalezen
hp2xx: команда не найдена
hp2xx: командата не е открита
hp2xx: 命令找不到
hp2xx: コマンドが見つかりません