hpfsck: 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/hpfsck - from package: hfsplus

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

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