hetupd: 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 CentOS possible default full paths are:

/usr/bin/hetupd - from package: hercules

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/hetupd - from package: hercules

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

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