hierarch28: 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/hierarch28 - from package: qfits-tools

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

Error in other languages:
hierarch28: bevel nie gevind nie
hierarch28: comandă negăsită
hierarch28: comando não encontrado
hierarch28: commande introuvable
hierarch28: command not found
hierarch28: käsku ei ole
hierarch28: không tìm thấy lệnh
hierarch28: komanda nerasta
hierarch28: Kommando nicht gefunden.
hierarch28: kommandot finns inte
hierarch28: komut yok
hierarch28: nie znaleziono polecenia
hierarch28: níor aimsíodh an t-ordú
hierarch28: no se encontró la orden
hierarch28: no s'ha trobat l'ordre
hierarch28: opdracht niet gevonden
hierarch28: parancs nem található
hierarch28: perintah tidak ditemukan
hierarch28: príkaz nenájdený
hierarch28: příkaz nenalezen
hierarch28: команда не найдена
hierarch28: командата не е открита
hierarch28: 命令找不到
hierarch28: コマンドが見つかりません