hdir: 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/hdir - from package: hfsutils

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

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