epylog: 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/sbin/epylog - from package: epylog

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

On Debian possible default full paths are:

/usr/sbin/epylog - from package: epylog

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

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