epam: 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/lib/erlang/p1_pam/bin/epam - from package: erlang-p1-pam

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

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