hpwd: 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/hpwd - from package: hfsutils

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

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