eurephiadm: 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/eurephiadm - from package: eurephia-admin

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

On Debian possible default full paths are:

/usr/bin/eurephiadm - from package: eurephia

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