hpls: 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/hpls - from package: hfsplus

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

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