hercifc: command not found

Have You tried accessing the binary with the full path?

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/hercifc - from package: hercules

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

On Debian possible default full paths are:

/usr/bin/hercifc - from package: hercules

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