hyakubm: 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/hyakubm - from package: vflib3-bin

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

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